1.12 Merge Add tests for H5Ocopy of new object refs (#1339)

* Add tests for H5Ocopy of new object refs

* Correct class name

* Skip test because of issue with debug assertions

* Update reference file

* Fix object examples for new refs and spelling fixs

* Fix ref try-catch blocks

20 files changed, 910 insertions, 503 deletions

diff --git a/MANIFEST b/MANIFEST
index ff62236..a277e78 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -3468,6 +3468,7 @@
 ./java/test/testfiles/JUnit-TestH5Obasic.txt
 ./java/test/testfiles/JUnit-TestH5Ocreate.txt
 ./java/test/testfiles/JUnit-TestH5Ocopy.txt
+./java/test/testfiles/JUnit-TestH5OcopyOld.txt
 ./java/test/testfiles/JUnit-TestH5P.txt
 ./java/test/testfiles/JUnit-TestH5PData.txt
 ./java/test/testfiles/JUnit-TestH5Pfapl.txt
@@ -3511,6 +3512,7 @@
 ./java/test/TestH5Obasic.java
 ./java/test/TestH5Ocreate.java
 ./java/test/TestH5Ocopy.java
+./java/test/TestH5OcopyOld.java
 ./java/test/TestH5P.java
 ./java/test/TestH5PData.java
 ./java/test/TestH5Pfapl.java
diff --git a/java/examples/datasets/H5Ex_D_UnlimitedMod.java b/java/examples/datasets/H5Ex_D_UnlimitedMod.java
index 273ac3e..0708898 100644
--- a/java/examples/datasets/H5Ex_D_UnlimitedMod.java
+++ b/java/examples/datasets/H5Ex_D_UnlimitedMod.java
@@ -17,7 +17,7 @@
   file.  Next, it reopens the file, reads back the data,
   outputs it to the screen, extends the dataset, and writes
   new data to the entire extended dataset.  Finally it
-  reopens the file again, reads back the data, and utputs it
+  reopens the file again, reads back the data, and outputs it
   to the screen.
  ************************************************************/
 package examples.datasets;
diff --git a/java/examples/datatypes/H5Ex_T_ObjectReference.java b/java/examples/datatypes/H5Ex_T_ObjectReference.java
index 38536b8..b0f98de 100644
--- a/java/examples/datatypes/H5Ex_T_ObjectReference.java
+++ b/java/examples/datatypes/H5Ex_T_ObjectReference.java
@@ -70,7 +70,7 @@ public class H5Ex_T_ObjectReference {
         long group_id = HDF5Constants.H5I_INVALID_HID;
         long dataset_id = HDF5Constants.H5I_INVALID_HID;
         long[] dims = { DIM0 };
-        byte[][] dset_data = new byte[DIM0][8];
+        byte[][] dset_data = new byte[DIM0][HDF5Constants.H5R_REF_BUF_SIZE];
 
         // Create a new file using default properties.
         try {
@@ -111,50 +111,58 @@ public class H5Ex_T_ObjectReference {
             e.printStackTrace();
         }
 
-        // Create references to the previously created objects. Passing -1
-        // as space_id causes this parameter to be ignored. Other values
-        // besides valid dataspaces result in an error.
         try {
             if (file_id >= 0) {
-                byte rbuf0[] = H5.H5Rcreate(file_id, GROUPNAME, HDF5Constants.H5R_OBJECT, -1);
-                byte rbuf1[] = H5.H5Rcreate(file_id, DATASETNAME2, HDF5Constants.H5R_OBJECT, -1);
-                for (int indx = 0; indx < 8; indx++) {
-                    dset_data[0][indx] = rbuf0[indx];
-                    dset_data[1][indx] = rbuf1[indx];
+                try {
+                    dset_data[0] = H5.H5Rcreate_object(file_id, GROUPNAME, HDF5Constants.H5P_DEFAULT);
+                }
+                catch (Throwable err) {
+                    err.printStackTrace();
+                }
+        
+                try {
+                    dset_data[1] = H5.H5Rcreate_object(file_id, DATASETNAME2, HDF5Constants.H5P_DEFAULT);
+                }
+                catch (Throwable err) {
+                    err.printStackTrace();
                 }
             }
+    
+            // Create dataspace. Setting maximum size to NULL sets the maximum
+            // size to be the current size.
+            try {
+                filespace_id = H5.H5Screate_simple(RANK, dims, null);
+            }
+            catch (Exception e) {
+                e.printStackTrace();
+            }
+    
+            // Create the dataset.
+            try {
+                if ((file_id >= 0) && (filespace_id >= 0))
+                    dataset_id = H5.H5Dcreate(file_id, DATASETNAME, HDF5Constants.H5T_STD_REF, filespace_id,
+                            HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+            }
+            catch (Exception e) {
+                e.printStackTrace();
+            }
+    
+            // Write the object references to it.
+            try {
+                if (dataset_id >= 0)
+                    H5.H5Dwrite(dataset_id, HDF5Constants.H5T_STD_REF, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
+                            HDF5Constants.H5P_DEFAULT, dset_data);
+            }
+            catch (Exception e) {
+                e.printStackTrace();
+            }
         }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        // Create dataspace. Setting maximum size to NULL sets the maximum
-        // size to be the current size.
-        try {
-            filespace_id = H5.H5Screate_simple(RANK, dims, null);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        // Create the dataset.
-        try {
-            if ((file_id >= 0) && (filespace_id >= 0))
-                dataset_id = H5.H5Dcreate(file_id, DATASETNAME, HDF5Constants.H5T_STD_REF_OBJ, filespace_id,
-                        HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        // Write the object references to it.
-        try {
-            if (dataset_id >= 0)
-                H5.H5Dwrite(dataset_id, HDF5Constants.H5T_STD_REF_OBJ, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
-                        HDF5Constants.H5P_DEFAULT, dset_data);
+        catch (Exception ex) {
+            ex.printStackTrace();
         }
-        catch (Exception e) {
-            e.printStackTrace();
+        finally {
+            try {H5.H5Rdestroy(dset_data[1]);} catch (Exception ex) {}
+            try {H5.H5Rdestroy(dset_data[0]);} catch (Exception ex) {}
         }
 
         // End access to the dataset and release resources used by it.
@@ -192,140 +200,91 @@ public class H5Ex_T_ObjectReference {
         int object_type = -1;
         long object_id = HDF5Constants.H5I_INVALID_HID;
         long[] dims = { DIM0 };
-        byte[][] dset_data;
+        byte[][] dset_data = new byte[DIM0][HDF5Constants.H5R_REF_BUF_SIZE];
 
         // Open an existing file.
         try {
             file_id = H5.H5Fopen(FILENAME, HDF5Constants.H5F_ACC_RDONLY, HDF5Constants.H5P_DEFAULT);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
 
-        // Open an existing dataset.
-        try {
-            if (file_id >= 0)
-                dataset_id = H5.H5Dopen(file_id, DATASETNAME, HDF5Constants.H5P_DEFAULT);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        // Get dataspace and allocate memory for read buffer.
-        try {
-            if (dataset_id >= 0)
-                dataspace_id = H5.H5Dget_space(dataset_id);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        try {
-            if (dataspace_id >= 0)
-                H5.H5Sget_simple_extent_dims(dataspace_id, dims, null);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        // Allocate array of pointers to two-dimensional arrays (the
-        // elements of the dataset.
-        dset_data = new byte[(int)dims[0]][8];
-
-        // Read the data using the default properties.
-        try {
-            if (dataset_id >= 0) {
-                H5.H5Dread(dataset_id, HDF5Constants.H5T_STD_REF_OBJ, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
-                        HDF5Constants.H5P_DEFAULT, dset_data);
-            }
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        // Output the data to the screen.
-        for (int indx = 0; indx < dims[0]; indx++) {
-            System.out.println(DATASETNAME + "[" + indx + "]:");
-            System.out.print("  ->");
-            // Open the referenced object, get its name and type.
+            // Open an existing dataset.
             try {
-                if (dataset_id >= 0) {
-                    object_id = H5.H5Rdereference(dataset_id, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5R_OBJECT, dset_data[indx]);
-                    object_type = H5.H5Rget_obj_type(dataset_id, HDF5Constants.H5R_OBJECT, dset_data[indx]);
-                }
-                String obj_name = null;
-                if (object_type >= 0) {
-                    // Get the length of the name and retrieve the name.
-                    obj_name = H5.H5Iget_name(object_id);
-                }
-                if ((object_id >= 0) && (object_type >= -1)) {
-                    switch (H5G_obj.get(object_type)) {
-                    case H5G_GROUP:
-                        System.out.print("H5G_GROUP");
-                        try {
-                            if (object_id >= 0)
-                                H5.H5Gclose(object_id);
-                        }
-                        catch (Exception e) {
-                            e.printStackTrace();
-                        }
-                        break;
-                    case H5G_DATASET:
-                        System.out.print("H5G_DATASET");
+                dataset_id = H5.H5Dopen(file_id, DATASETNAME, HDF5Constants.H5P_DEFAULT);
+    
+                try {
+                    // Get dataspace and allocate memory for read buffer.
+                    dataspace_id = H5.H5Dget_space(dataset_id);
+                    H5.H5Sget_simple_extent_dims(dataspace_id, dims, null);
+                
+                    // Read data.
+                    H5.H5Dread(dataset_id, HDF5Constants.H5T_STD_REF, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
+                            HDF5Constants.H5P_DEFAULT, dset_data);
+                
+                    // Output the data to the screen.
+                    for (int indx = 0; indx < dims[0]; indx++) {
+                        System.out.println(DATASETNAME + "[" + indx + "]:");
+                        System.out.print("  ->");
+                        // Open the referenced object, get its name and type.
                         try {
-                            if (object_id >= 0)
-                                H5.H5Dclose(object_id);
+                            object_id = H5.H5Ropen_object(dset_data[indx], HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+                            try {
+                                object_type = H5.H5Rget_obj_type3(dset_data[indx], HDF5Constants.H5R_OBJECT);
+                                String obj_name = null;
+                                if (object_type >= 0) {
+                                    // Get the name.
+                                    obj_name = H5.H5Iget_name(object_id);
+                                }
+                                if ((object_id >= 0) && (object_type >= -1)) {
+                                    switch (H5G_obj.get(object_type)) {
+                                    case H5G_GROUP:
+                                        System.out.print("H5G_GROUP");
+                                        break;
+                                    case H5G_DATASET:
+                                        System.out.print("H5G_DATASET");
+                                        break;
+                                    case H5G_TYPE:
+                                        System.out.print("H5G_TYPE");
+                                        break;
+                                    default:
+                                        System.out.print("UNHANDLED");
+                                    }
+                                }
+                                // Print the name.
+                                System.out.println(": " + obj_name);
+                            }
+                            catch (Exception e) {
+                                e.printStackTrace();
+                            }
+                            finally {
+                                try {H5.H5Oclose(object_id);} catch (Exception e) {}
+                            }
                         }
-                        catch (Exception e) {
-                            e.printStackTrace();
+                        catch (Exception e4) {
+                            e4.printStackTrace();
                         }
-                        break;
-                    case H5G_TYPE:
-                        System.out.print("H5G_TYPE");
-                        try {
-                            if (object_id >= 0)
-                                H5.H5Tclose(object_id);
-                        }
-                        catch (Exception e) {
-                            e.printStackTrace();
+                        finally {
+                            try {H5.H5Rdestroy(dset_data[indx]);} catch (Exception e4) {}
                         }
-                        break;
-                    default:
-                        System.out.print("UNHANDLED");
-                    }
+                    } // end for
+                }
+                catch (Exception e3) {
+                    e3.printStackTrace();
+                }
+                finally {
+                    try {H5.H5Sclose(dataspace_id);} catch (Exception e3) {}
                 }
-                // Print the name.
-                System.out.println(": " + obj_name);
             }
-            catch (Exception e) {
-                e.printStackTrace();
+            catch (Exception e2) {
+                e2.printStackTrace();
+            }
+            finally {
+                try {H5.H5Dclose(dataset_id);} catch (Exception e2) {}
             }
         }
-
-        // End access to the dataset and release resources used by it.
-        try {
-            if (dataspace_id >= 0)
-                H5.H5Sclose(dataspace_id);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        try {
-            if (dataset_id >= 0)
-                H5.H5Dclose(dataset_id);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
+        catch (Exception e1) {
+            e1.printStackTrace();
         }
-
-        // Close the file.
-        try {
-            if (file_id >= 0)
-                H5.H5Fclose(file_id);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
+        finally {
+            try {H5.H5Fclose(file_id);} catch (Exception e1) {}
         }
     }
 
diff --git a/java/examples/datatypes/H5Ex_T_ObjectReferenceAttribute.java b/java/examples/datatypes/H5Ex_T_ObjectReferenceAttribute.java
index b38b0a0..f61ae0d 100644
--- a/java/examples/datatypes/H5Ex_T_ObjectReferenceAttribute.java
+++ b/java/examples/datatypes/H5Ex_T_ObjectReferenceAttribute.java
@@ -18,7 +18,6 @@
   Next, it reopens the file, dereferences the references,
   and outputs the names of their targets to the screen.
  ************************************************************/
-
 package examples.datatypes;
 
 import java.util.EnumSet;
@@ -72,7 +71,7 @@ public class H5Ex_T_ObjectReferenceAttribute {
         long dataset_id = HDF5Constants.H5I_INVALID_HID;
         long attribute_id = HDF5Constants.H5I_INVALID_HID;
         long[] dims = { DIM0 };
-        byte[][] dset_data = new byte[DIM0][8];
+        byte[][] dset_data = new byte[DIM0][HDF5Constants.H5R_REF_BUF_SIZE];
 
         // Create a new file using default properties.
         try {
@@ -86,7 +85,7 @@ public class H5Ex_T_ObjectReferenceAttribute {
         // Create dataset with a scalar dataspace.
         try {
             dataspace_id = H5.H5Screate(HDF5Constants.H5S_SCALAR);
-            if (dataspace_id >= 0) {
+            if ((file_id >= 0) && (dataspace_id >= 0)) {
                 dataset_id = H5.H5Dcreate(file_id, DATASETNAME2, HDF5Constants.H5T_STD_I32LE, dataspace_id,
                         HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
                 if (dataset_id >= 0)
@@ -113,64 +112,72 @@ public class H5Ex_T_ObjectReferenceAttribute {
             e.printStackTrace();
         }
 
-        // Create references to the previously created objects. Passing -1
-        // as space_id causes this parameter to be ignored. Other values
-        // besides valid dataspaces result in an error.
         try {
             if (file_id >= 0) {
-                byte rbuf0[] = H5.H5Rcreate(file_id, GROUPNAME, HDF5Constants.H5R_OBJECT, -1);
-                byte rbuf1[] = H5.H5Rcreate(file_id, DATASETNAME2, HDF5Constants.H5R_OBJECT, -1);
-                for (int indx = 0; indx < 8; indx++) {
-                    dset_data[0][indx] = rbuf0[indx];
-                    dset_data[1][indx] = rbuf1[indx];
+                try {
+                    dset_data[0] = H5.H5Rcreate_object(file_id, GROUPNAME, HDF5Constants.H5P_DEFAULT);
+                }
+                catch (Throwable err) {
+                    err.printStackTrace();
+                }
+        
+                try {
+                    dset_data[1] = H5.H5Rcreate_object(file_id, DATASETNAME2, HDF5Constants.H5P_DEFAULT);
+                }
+                catch (Throwable err) {
+                    err.printStackTrace();
                 }
             }
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
 
-        // Create dataset with a scalar dataspace to serve as the parent
-        // for the attribute.
-        try {
-            dataspace_id = H5.H5Screate(HDF5Constants.H5S_SCALAR);
-            if (dataspace_id >= 0) {
-                dataset_id = H5.H5Dcreate(file_id, DATASETNAME, HDF5Constants.H5T_STD_I32LE, dataspace_id,
-                        HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
-                H5.H5Sclose(dataspace_id);
-                dataspace_id = HDF5Constants.H5I_INVALID_HID;
+            // Create dataset with a scalar dataspace to serve as the parent
+            // for the attribute.
+            try {
+                dataspace_id = H5.H5Screate(HDF5Constants.H5S_SCALAR);
+                if (dataspace_id >= 0) {
+                    dataset_id = H5.H5Dcreate(file_id, DATASETNAME, HDF5Constants.H5T_STD_I32LE, dataspace_id,
+                            HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+                    H5.H5Sclose(dataspace_id);
+                    dataspace_id = HDF5Constants.H5I_INVALID_HID;
+                }
+            }
+            catch (Exception e) {
+                e.printStackTrace();
+            }
+    
+            // Create dataspace. Setting maximum size to NULL sets the maximum
+            // size to be the current size.
+            try {
+                dataspace_id = H5.H5Screate_simple(RANK, dims, null);
+            }
+            catch (Exception e) {
+                e.printStackTrace();
+            }
+    
+            // Create the attribute and write the array data to it.
+            try {
+                if ((dataset_id >= 0) && (dataspace_id >= 0))
+                    attribute_id = H5.H5Acreate(dataset_id, ATTRIBUTENAME, HDF5Constants.H5T_STD_REF, dataspace_id,
+                            HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+            }
+            catch (Exception e) {
+                e.printStackTrace();
+            }
+    
+            // Write the dataset.
+            try {
+                if (attribute_id >= 0)
+                    H5.H5Awrite(attribute_id, HDF5Constants.H5T_STD_REF, dset_data);
+            }
+            catch (Exception e) {
+                e.printStackTrace();
             }
         }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        // Create dataspace. Setting maximum size to NULL sets the maximum
-        // size to be the current size.
-        try {
-            dataspace_id = H5.H5Screate_simple(RANK, dims, null);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        // Create the attribute and write the array data to it.
-        try {
-            if ((dataset_id >= 0) && (dataspace_id >= 0))
-                attribute_id = H5.H5Acreate(dataset_id, ATTRIBUTENAME, HDF5Constants.H5T_STD_REF_OBJ, dataspace_id,
-                        HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        // Write the dataset.
-        try {
-            if (attribute_id >= 0)
-                H5.H5Awrite(attribute_id, HDF5Constants.H5T_STD_REF_OBJ, dset_data);
+        catch (Exception ex) {
+            ex.printStackTrace();
         }
-        catch (Exception e) {
-            e.printStackTrace();
+        finally {
+            try {H5.H5Rdestroy(dset_data[1]);} catch (Exception ex) {}
+            try {H5.H5Rdestroy(dset_data[0]);} catch (Exception ex) {}
         }
 
         // End access to the dataset and release resources used by it.
@@ -190,7 +197,6 @@ public class H5Ex_T_ObjectReferenceAttribute {
             e.printStackTrace();
         }
 
-        // Terminate access to the data space.
         try {
             if (dataspace_id >= 0)
                 H5.H5Sclose(dataspace_id);
@@ -207,7 +213,6 @@ public class H5Ex_T_ObjectReferenceAttribute {
         catch (Exception e) {
             e.printStackTrace();
         }
-
     }
 
     private static void ReadDataset() {
@@ -218,158 +223,102 @@ public class H5Ex_T_ObjectReferenceAttribute {
         int object_type = -1;
         long object_id = HDF5Constants.H5I_INVALID_HID;
         long[] dims = { DIM0 };
-        byte[][] dset_data;
+        byte[][] dset_data = new byte[DIM0][HDF5Constants.H5R_REF_BUF_SIZE];
 
         // Open an existing file.
         try {
             file_id = H5.H5Fopen(FILENAME, HDF5Constants.H5F_ACC_RDONLY, HDF5Constants.H5P_DEFAULT);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
 
-        // Open an existing dataset.
-        try {
-            if (file_id >= 0)
-                dataset_id = H5.H5Dopen(file_id, DATASETNAME, HDF5Constants.H5P_DEFAULT);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        try {
-            if (dataset_id >= 0)
-                attribute_id = H5.H5Aopen_by_name(dataset_id, ".", ATTRIBUTENAME, HDF5Constants.H5P_DEFAULT,
-                        HDF5Constants.H5P_DEFAULT);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        // Get dataspace and allocate memory for read buffer.
-        try {
-            if (attribute_id >= 0)
-                dataspace_id = H5.H5Aget_space(attribute_id);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        try {
-            if (dataspace_id >= 0)
-                H5.H5Sget_simple_extent_dims(dataspace_id, dims, null);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        // Allocate array of pointers to two-dimensional arrays (the
-        // elements of the dataset.
-        dset_data = new byte[(int) dims[0]][8];
-
-        // Read data.
-        try {
-            if (attribute_id >= 0)
-                H5.H5Aread(attribute_id, HDF5Constants.H5T_STD_REF_OBJ, dset_data);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        // Output the data to the screen.
-        for (int indx = 0; indx < dims[0]; indx++) {
-            System.out.println(ATTRIBUTENAME + "[" + indx + "]:");
-            System.out.print("  ->");
-            // Open the referenced object, get its name and type.
+            // Open an existing dataset.
             try {
-                if (dataset_id >= 0) {
-                    object_id = H5.H5Rdereference(dataset_id, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5R_OBJECT, dset_data[indx]);
-                    object_type = H5.H5Rget_obj_type(dataset_id, HDF5Constants.H5R_OBJECT, dset_data[indx]);
+                dataset_id = H5.H5Dopen(file_id, DATASETNAME, HDF5Constants.H5P_DEFAULT);
+    
+                try {
+                    attribute_id = H5.H5Aopen_by_name(dataset_id, ".", ATTRIBUTENAME, HDF5Constants.H5P_DEFAULT,
+                            HDF5Constants.H5P_DEFAULT);
+        
+                    // Get dataspace and allocate memory for read buffer.
+                    try {
+                        dataspace_id = H5.H5Aget_space(attribute_id);
+                        H5.H5Sget_simple_extent_dims(dataspace_id, dims, null);
+        
+                        // Read data.
+                        H5.H5Aread(attribute_id, HDF5Constants.H5T_STD_REF, dset_data);
+        
+                        // Output the data to the screen.
+                        for (int indx = 0; indx < dims[0]; indx++) {
+                            System.out.println(ATTRIBUTENAME + "[" + indx + "]:");
+                            System.out.print("  ->");
+                            // Open the referenced object, get its name and type.
+                            try {
+                                object_id = H5.H5Ropen_object(dset_data[indx], HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+                                try {
+                                    object_type = H5.H5Rget_obj_type3(dset_data[indx], HDF5Constants.H5R_OBJECT);
+                                    String obj_name = null;
+                                    if (object_type >= 0) {
+                                        // Get the name.
+                                        obj_name = H5.H5Iget_name(object_id);
+                                    }
+                                    if ((object_id >= 0) && (object_type >= -1)) {
+                                        switch (H5G_obj.get(object_type)) {
+                                        case H5G_GROUP:
+                                            System.out.print("H5G_GROUP");
+                                            break;
+                                        case H5G_DATASET:
+                                            System.out.print("H5G_DATASET");
+                                            break;
+                                        case H5G_TYPE:
+                                            System.out.print("H5G_TYPE");
+                                            break;
+                                        default:
+                                            System.out.print("UNHANDLED");
+                                        }
+                                    }
+                                    // Print the name.
+                                    System.out.println(": " + obj_name);
+                                }
+                                catch (Exception e) {
+                                    e.printStackTrace();
+                                }
+                                finally {
+                                    try {H5.H5Oclose(object_id);} catch (Exception e) {}
+                                }
+                            }
+                            catch (Exception e5) {
+                                e5.printStackTrace();
+                            }
+                            finally {
+                                try {H5.H5Rdestroy(dset_data[indx]);} catch (Exception e5) {}
+                            }
+                        } // end for
+                    }
+                    catch (Exception e4) {
+                        e4.printStackTrace();
+                    }
+                    finally {
+                        try {H5.H5Sclose(dataspace_id);} catch (Exception e3) {}
+                    }
                 }
-                String obj_name = null;
-                if (object_type >= 0) {
-                    // Get the length of the name and retrieve the name.
-                    obj_name = H5.H5Iget_name(object_id);
+                catch (Exception e3) {
+                    e3.printStackTrace();
                 }
-                if ((object_id >= 0) && (object_type >= -1)) {
-                    switch (H5G_obj.get(object_type)) {
-                    case H5G_GROUP:
-                        System.out.print("H5G_GROUP");
-                        try {
-                            if (object_id >= 0)
-                                H5.H5Gclose(object_id);
-                        }
-                        catch (Exception e) {
-                            e.printStackTrace();
-                        }
-                        break;
-                    case H5G_DATASET:
-                        System.out.print("H5G_DATASET");
-                        try {
-                            if (object_id >= 0)
-                                H5.H5Dclose(object_id);
-                        }
-                        catch (Exception e) {
-                            e.printStackTrace();
-                        }
-                        break;
-                    case H5G_TYPE:
-                        System.out.print("H5G_TYPE");
-                        try {
-                            if (object_id >= 0)
-                                H5.H5Tclose(object_id);
-                        }
-                        catch (Exception e) {
-                            e.printStackTrace();
-                        }
-                        break;
-                    default:
-                        System.out.print("UNHANDLED");
-                    }
+                finally {
+                    try {H5.H5Aclose(attribute_id);} catch (Exception e4) {}
                 }
-                // Print the name.
-                System.out.println(": " + obj_name);
             }
-            catch (Exception e) {
-                e.printStackTrace();
+            catch (Exception e2) {
+                e2.printStackTrace();
+            }
+            finally {
+                try {H5.H5Dclose(dataset_id);} catch (Exception e2) {}
             }
         }
-
-        // End access to the dataset and release resources used by it.
-        try {
-            if (attribute_id >= 0)
-                H5.H5Aclose(attribute_id);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        try {
-            if (dataset_id >= 0)
-                H5.H5Dclose(dataset_id);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        // Terminate access to the data space.
-        try {
-            if (dataspace_id >= 0)
-                H5.H5Sclose(dataspace_id);
+        catch (Exception e1) {
+            e1.printStackTrace();
         }
-        catch (Exception e) {
-            e.printStackTrace();
+        finally {
+            try {H5.H5Fclose(file_id);} catch (Exception e1) {}
         }
-
-        // Close the file.
-        try {
-            if (file_id >= 0)
-                H5.H5Fclose(file_id);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-
     }
 
     public static void main(String[] args) {
diff --git a/java/examples/groups/H5Ex_G_Corder.java b/java/examples/groups/H5Ex_G_Corder.java
index 5df850e..4fa5aa2 100644
--- a/java/examples/groups/H5Ex_G_Corder.java
+++ b/java/examples/groups/H5Ex_G_Corder.java
@@ -11,7 +11,7 @@
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 /************************************************************
     Creating a file with creation properties and traverse the
-    groups in alpabetical and creation order.
+    groups in alphabetical and creation order.
  ************************************************************/
 
 package examples.groups;
diff --git a/java/src/hdf/hdf5lib/H5.java b/java/src/hdf/hdf5lib/H5.java
index 076c067..6364019 100644
--- a/java/src/hdf/hdf5lib/H5.java
+++ b/java/src/hdf/hdf5lib/H5.java
@@ -161,7 +161,7 @@ import hdf.hdf5lib.structs.H5O_token_t;
  * disk (source) and in memory (destination).
  * <p>
  * For Java, this ``ANY'' is a problem, as the type of data must always be declared. Furthermore, multidimensional
- * arrays are definitely <i>not</i> layed out contiguously in memory. It would be infeasible to declare a separate
+ * arrays are definitely <i>not</i> laid out contiguously in memory. It would be infeasible to declare a separate
  * routine for every combination of number type and dimensionality. For that reason, the
  * <a href="./hdf.hdf5lib.HDFArray.html"><b>HDFArray</b></a> class is used to discover the type, shape, and size of the
  * data array at run time, and to convert to and from a contiguous array of bytes in synchronized static native C order.
@@ -442,7 +442,7 @@ public class H5 implements java.io.Serializable {
 
     /**
      * Turn on error handling. By default, the C library prints the error stack of the HDF-5 C library on stdout. This
-     * behavior may be reenabled by calling H5error_on().
+     * behavior may be re-enabled by calling H5error_on().
      */
     public synchronized static native void H5error_on();
 
@@ -2097,7 +2097,7 @@ public class H5 implements java.io.Serializable {
      *            IN: Identifier for object to which attributes are attached; may be group, dataset, or named datatype.
      * @param idx_type
      *            IN: The type of index specified by idx_type can be one of the following:
-     *                      H5_INDEX_NAME             An alpha-numeric index by attribute name.
+     *                      H5_INDEX_NAME             An alphanumeric index by attribute name.
      *                      H5_INDEX_CRT_ORDER        An index by creation order.
      * @param order
      *            IN: The order in which the index is to be traversed, as specified by order, can be one of the following:
@@ -2137,7 +2137,7 @@ public class H5 implements java.io.Serializable {
      *            IN: Name of object, relative to location.
      * @param idx_type
      *            IN: The type of index specified by idx_type can be one of the following:
-     *                      H5_INDEX_NAME             An alpha-numeric index by attribute name.
+     *                      H5_INDEX_NAME             An alphanumeric index by attribute name.
      *                      H5_INDEX_CRT_ORDER        An index by creation order.
      * @param order
      *            IN: The order in which the index is to be traversed, as specified by order, can be one of the following:
@@ -4577,7 +4577,7 @@ public class H5 implements java.io.Serializable {
             throws HDF5LibraryException, NullPointerException;
 
     /**
-     * Given a mount point, H5Funmount dissassociates the mount point's file from the file mounted there.
+     * Given a mount point, H5Funmount disassociates the mount point's file from the file mounted there.
      *
      * @param loc_id
      *            The identifier for the location at which the specified file is to be unmounted.
@@ -5205,7 +5205,7 @@ public class H5 implements java.io.Serializable {
      */
     /**
      * retrieves information of all objects (recurvisely) under the group (name) located in the file or group specified
-     * by loc_id upto maximum specified by objMax.
+     * by loc_id up to maximum specified by objMax.
      *
      * @param loc_id
      *            IN: File or group identifier
@@ -7182,7 +7182,7 @@ public class H5 implements java.io.Serializable {
      * @param size
      *            IN: Size the property value.
      * @param def_value
-     *            IN: Defaul value of the property
+     *            IN: Default value of the property
      *
      * @exception HDF5LibraryException
      *                - Error from the HDF-5 Library.
@@ -7202,7 +7202,7 @@ public class H5 implements java.io.Serializable {
      * @param size
      *            IN: Size the property value.
      * @param value
-     *            IN: Defaul value of the property
+     *            IN: Default value of the property
      *
      * @exception HDF5LibraryException
      *                - Error from the HDF-5 Library.
@@ -7245,7 +7245,7 @@ public class H5 implements java.io.Serializable {
      * @param ocpl_id
      *            IN: : Object (dataset or group) creation property list identifier
      * @param attributes
-     *            The maximun and minimum no. of attributes to be stored.
+     *            The maximum and minimum no. of attributes to be stored.
      *
      * <pre>
      *      attributes[0] =  The maximum number of attributes to be stored in compact storage
@@ -7353,7 +7353,7 @@ public class H5 implements java.io.Serializable {
      *              transfer property list.  The FLAGS argument specifies certain
      *              general properties of the filter and is documented below.
      *              The CD_VALUES is an array of CD_NELMTS integers which are
-     *              auxiliary data for the filter.  The integer vlues will be
+     *              auxiliary data for the filter.  The integer values will be
      *              stored in the dataset object header as part of the filter
      *              information.
      *<p>
@@ -8054,9 +8054,9 @@ public class H5 implements java.io.Serializable {
      * @exception HDF5LibraryException
      *                - Error from the HDF-5 Library.
      * @exception NullPointerException
-     *                - aligment array is null.
+     *                - alignment array is null.
      * @exception IllegalArgumentException
-     *                - aligment array is invalid.
+     *                - alignment array is invalid.
      **/
     public synchronized static native int H5Pget_alignment(long plist, long[] alignment) throws HDF5LibraryException,
     NullPointerException, IllegalArgumentException;
@@ -8202,7 +8202,7 @@ public class H5 implements java.io.Serializable {
             throws HDF5LibraryException;
 
     /**
-     * H5Pget_gc_references Returns the current setting for the garbage collection refernces property from a file access
+     * H5Pget_gc_references Returns the current setting for the garbage collection references property from a file access
      * property list.
      *
      * @param fapl_id
@@ -9254,7 +9254,7 @@ public class H5 implements java.io.Serializable {
      * the raw data chunk cache on a per-datset basis.
      *
      * @param dapl_id
-     *            IN: Identifier of the datset access property list.
+     *            IN: Identifier of the dataset access property list.
      * @param rdcc_nslots
      *            IN: Number of elements (objects) in the raw data chunk cache.
      * @param rdcc_nbytes
diff --git a/java/src/hdf/hdf5lib/exceptions/HDF5LibraryException.java b/java/src/hdf/hdf5lib/exceptions/HDF5LibraryException.java
index efe1fdf..71ba795 100644
--- a/java/src/hdf/hdf5lib/exceptions/HDF5LibraryException.java
+++ b/java/src/hdf/hdf5lib/exceptions/HDF5LibraryException.java
@@ -114,7 +114,7 @@ public class HDF5LibraryException extends HDF5Exception {
             return "special zero no error";
         }
         else if (err_code == HDF5Constants.H5E_UNINITIALIZED) {
-            return "information is unitialized";
+            return "information is uninitialized";
         }
         else if (err_code == HDF5Constants.H5E_UNSUPPORTED) {
             return "feature is unsupported";
diff --git a/java/src/hdf/hdf5lib/package-info.java b/java/src/hdf/hdf5lib/package-info.java
index 838a266..7edfcb2 100644
--- a/java/src/hdf/hdf5lib/package-info.java
+++ b/java/src/hdf/hdf5lib/package-info.java
@@ -114,7 +114,7 @@
  * disk (source) and in memory (destination).
  * <p>
  * For Java, this ``ANY'' is a problem, as the type of data must always be declared. Furthermore, multidimensional
- * arrays are definitely <i>not</i> layed out contiguously in memory. It would be infeasible to declare a separate
+ * arrays are definitely <i>not</i> laid out contiguously in memory. It would be infeasible to declare a separate
  * routine for every combination of number type and dimensionality. For that reason, the
  *  <a href="./hdf.hdf5lib.HDFArray.html"><b>HDFArray</b></a> class is used to discover the type, shape, and size of the
  * data array at run time, and to convert to and from a contiguous array of bytes in synchronized static native C order.
diff --git a/java/src/hdf/hdf5lib/structs/H5F_info2_t.java b/java/src/hdf/hdf5lib/structs/H5F_info2_t.java
index f951bb4..78e6d6c 100644
--- a/java/src/hdf/hdf5lib/structs/H5F_info2_t.java
+++ b/java/src/hdf/hdf5lib/structs/H5F_info2_t.java
@@ -40,7 +40,7 @@ public class H5F_info2_t implements Serializable{
     public H5_ih_info_t    sohm_msgs_info;
 
     /**
-     * Constructor fot current "global" information about file
+     * Constructor for current "global" information about file
      * @param super_version: Superblock version number
      * @param super_size: Superblock size
      * @param super_ext_size: Superblock extension size
diff --git a/java/src/jni/h5util.c b/java/src/jni/h5util.c
index 9a93d5c..3a08ea7 100644
--- a/java/src/jni/h5util.c
+++ b/java/src/jni/h5util.c
@@ -1351,7 +1351,7 @@ done:
  *      This is a special case subfunction to print the data in a region reference of type blocks.
  *
  * Return:
- *      The function returns FAIL if there was an error, otherwise SUCEED
+ *      The function returns FAIL if there was an error, otherwise SUCCEED
  *-------------------------------------------------------------------------
  */
 static int
@@ -1774,7 +1774,7 @@ done:
  * Purpose: Recursive check for variable length string of a datatype.
  *
  * Return:
- *    TRUE : type conatains any variable length string
+ *    TRUE : type contains any variable length string
  *    FALSE : type doesn't contain any variable length string
  *    Negative value: error occur
  *
@@ -2303,7 +2303,7 @@ done:
  *      This is a special case subfunction to print the data in a region reference of type blocks.
  *
  * Return:
- *      The function returns FAIL if there was an error, otherwise SUCEED
+ *      The function returns FAIL if there was an error, otherwise SUCCEED
  *
  *-------------------------------------------------------------------------
  */
diff --git a/java/test/CMakeLists.txt b/java/test/CMakeLists.txt
index 70067fc..9362b42 100644
--- a/java/test/CMakeLists.txt
+++ b/java/test/CMakeLists.txt
@@ -39,6 +39,7 @@ set (HDF5_JAVA_TEST_SOURCES
     TestH5Oparams
     TestH5Obasic
     TestH5Ocreate
+    TestH5OcopyOld
     TestH5Ocopy
     TestH5PL
     TestH5VL
diff --git a/java/test/Makefile.am b/java/test/Makefile.am
index 08e79e3..4f34bc5 100644
--- a/java/test/Makefile.am
+++ b/java/test/Makefile.am
@@ -71,6 +71,7 @@ noinst_JAVA = \
     TestH5Oparams.java \
     TestH5Obasic.java \
     TestH5Ocreate.java \
+    TestH5OcopyOld.java \
     TestH5Ocopy.java \
     TestH5PL.java \
     TestH5VL.java \
diff --git a/java/test/TestH5Ocopy.java b/java/test/TestH5Ocopy.java
index b3b1acd..821cad3 100644
--- a/java/test/TestH5Ocopy.java
+++ b/java/test/TestH5Ocopy.java
@@ -136,33 +136,46 @@ public class TestH5Ocopy {
     @Test
     public void testH5OcopyRefsAttr() {
         long ocp_plist_id = HDF5Constants.H5I_INVALID_HID;
-        byte rbuf0[]=null , rbuf1[] = null;
-        byte[] dset_data = new byte[16];
+        byte[][] dset_data = new byte[2][HDF5Constants.H5R_REF_BUF_SIZE];
         long attribute_id = HDF5Constants.H5I_INVALID_HID;
 
-
-        try {
-            rbuf0 = H5.H5Rcreate(H5fid, "/G1", HDF5Constants.H5R_OBJECT, -1);
-            rbuf1 = H5.H5Rcreate(H5fid, "DS2", HDF5Constants.H5R_OBJECT, -1);
-            //System.arraycopy(rbuf0, 0, dset_data, 0, 8);
-            System.arraycopy(rbuf1, 0, dset_data, 8, 8);
-        }
-        catch (Exception ex) {
-            fail("testH5OcopyRefsAttr: H5Rcreate failed");
-        }
-
         try {
-            attribute_id = H5.H5Acreate(H5did2, "A1", HDF5Constants.H5T_STD_REF_OBJ, H5dsid, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
-            assertTrue("testH5OcopyRefsAttr.H5Acreate: ", attribute_id >= 0);
-            H5.H5Awrite(attribute_id, HDF5Constants.H5T_STD_REF_OBJ, dset_data);
-
-            H5.H5Aclose(attribute_id);
+            try {
+                dset_data[0] = H5.H5Rcreate_object(H5fid, "/G1", HDF5Constants.H5P_DEFAULT);
+            }
+            catch (Throwable err) {
+                err.printStackTrace();
+                fail("testH5OcopyRefsAttr: H5Rcreate_object " + err);
+            }
+    
+            try {
+                dset_data[1] = H5.H5Rcreate_object(H5fid, "DS2", HDF5Constants.H5P_DEFAULT);
+            }
+            catch (Throwable err) {
+                err.printStackTrace();
+                fail("testH5OcopyRefsAttr: H5Rcreate_object " + err);
+            }
+    
+            try {
+                attribute_id = H5.H5Acreate(H5did2, "A1", HDF5Constants.H5T_STD_REF, H5dsid, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+                assertTrue("testH5OcopyRefsAttr.H5Acreate: ", attribute_id >= 0);
+                H5.H5Awrite(attribute_id, HDF5Constants.H5T_STD_REF, dset_data);
+    
+                H5.H5Aclose(attribute_id);
+            }
+            catch (Exception ex) {
+                fail("testH5OcopyRefsAttr: H5Awrite failed");
+            }
+            finally {
+                try {H5.H5Aclose(attribute_id);} catch (Exception exx) {}
+            }
         }
         catch (Exception ex) {
-            fail("testH5OcopyRefsAttr: H5Awrite failed");
+            ex.printStackTrace();
         }
         finally {
-            try {H5.H5Aclose(attribute_id);} catch (Exception exx) {}
+            try {H5.H5Rdestroy(dset_data[1]);} catch (Exception ex) {}
+            try {H5.H5Rdestroy(dset_data[0]);} catch (Exception ex) {}
         }
 
         try {
@@ -181,30 +194,50 @@ public class TestH5Ocopy {
 
     @Test
     public void testH5OcopyRefsDatasettodiffFile() {
-        byte rbuf1[] = null;
-        byte[] dset_data = new byte[16];
+        byte[][] dset_data = new byte[2][HDF5Constants.H5R_REF_BUF_SIZE];
         long ocp_plist_id = HDF5Constants.H5I_INVALID_HID;
         long dataset_id = HDF5Constants.H5I_INVALID_HID;
         long H5fid2 = HDF5Constants.H5I_INVALID_HID;
 
         try {
-            rbuf1 = H5.H5Rcreate(H5fid, "DS2", HDF5Constants.H5R_OBJECT, -1);
-            System.arraycopy(rbuf1, 0, dset_data, 8, 8);
-
-            dataset_id = H5.H5Dcreate(H5fid, "DSREF",
-                    HDF5Constants.H5T_STD_REF_OBJ, H5dsid,
-                    HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
-            assertTrue("testH5OcopyRefsDatasettodiffFile.H5Dcreate: ", dataset_id >= 0);
-            H5.H5Dwrite(dataset_id, HDF5Constants.H5T_STD_REF_OBJ,
-                    HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
-                    HDF5Constants.H5P_DEFAULT, dset_data);
-            H5.H5Dclose(dataset_id);
+            try {
+                dset_data[0] = H5.H5Rcreate_object(H5fid, "/G1", HDF5Constants.H5P_DEFAULT);
+            }
+            catch (Throwable err) {
+                err.printStackTrace();
+                fail("testH5OcopyRefsDatasettodiffFile: H5Rcreate_object " + err);
+            }
+            try {
+                dset_data[1] = H5.H5Rcreate_object(H5fid, "DS2", HDF5Constants.H5P_DEFAULT);
+            }
+            catch (Throwable err) {
+                err.printStackTrace();
+                fail("testH5OcopyRefsDatasettodiffFile: H5Rcreate_object " + err);
+            }
+    
+            try {
+                dataset_id = H5.H5Dcreate(H5fid, "DSREF",
+                        HDF5Constants.H5T_STD_REF, H5dsid,
+                        HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+                assertTrue("testH5OcopyRefsDatasettodiffFile.H5Dcreate: ", dataset_id >= 0);
+                H5.H5Dwrite(dataset_id, HDF5Constants.H5T_STD_REF,
+                        HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
+                        HDF5Constants.H5P_DEFAULT, dset_data);
+                H5.H5Dclose(dataset_id);
+            }
+            catch (Exception ex) {
+                fail("testH5OcopyRefsDatasettodiffFile: create dataset failed");
+            }
+            finally {
+                try {H5.H5Dclose(dataset_id);} catch (Exception exx) {}
+            }
         }
         catch (Exception ex) {
-            fail("testH5OcopyRefsDatasettodiffFile: create dataset failed");
+            ex.printStackTrace();
         }
         finally {
-            try {H5.H5Dclose(dataset_id);} catch (Exception exx) {}
+            try {H5.H5Rdestroy(dset_data[0]);} catch (Exception ex) {}
+            try {H5.H5Rdestroy(dset_data[1]);} catch (Exception ex) {}
         }
 
         try {
@@ -241,123 +274,154 @@ public class TestH5Ocopy {
 
     @Test
     public void testH5OcopyRefsDatasettosameFile() {
-        byte rbuf0[]=null , rbuf1[] = null;
-        byte[] dset_data = new byte[16];
+        byte[][] dset_data = new byte[2][HDF5Constants.H5R_REF_BUF_SIZE];
+        byte[][] read_data = new byte[2][HDF5Constants.H5R_REF_BUF_SIZE];
         long ocp_plist_id = HDF5Constants.H5I_INVALID_HID;
         long dataset_id = HDF5Constants.H5I_INVALID_HID;
         long did = HDF5Constants.H5I_INVALID_HID;
         int obj_type = -1;
-        byte[] read_data = new byte[16];
 
         try {
-            rbuf0 = H5.H5Rcreate(H5fid, "/G1", HDF5Constants.H5R_OBJECT, -1);
-            rbuf1 = H5.H5Rcreate(H5fid, "DS2", HDF5Constants.H5R_OBJECT, -1);
-            System.arraycopy(rbuf0, 0, dset_data, 0, 8);
-            System.arraycopy(rbuf1, 0, dset_data, 8, 8);
-
-            //Create a dataset and write object references to it.
-            dataset_id = H5.H5Dcreate(H5fid, "DSREF",
-                    HDF5Constants.H5T_STD_REF_OBJ, H5dsid,
-                    HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
-            assertTrue("testH5OcopyRefsDatasettosameFile.H5Dcreate: ", dataset_id >= 0);
-            H5.H5Dwrite(dataset_id, HDF5Constants.H5T_STD_REF_OBJ,
-                    HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
-                    HDF5Constants.H5P_DEFAULT, dset_data);
-            //Close the dataset.
-            H5.H5Dclose(dataset_id);
+            try {
+                dset_data[0] = H5.H5Rcreate_object(H5fid, "/G1", HDF5Constants.H5P_DEFAULT);
+            }
+            catch (Throwable err) {
+                err.printStackTrace();
+                fail("testH5OcopyRefsDatasettosameFile: H5Rcreate_object " + err);
+            }
+    
+            try {
+                dset_data[1] = H5.H5Rcreate_object(H5fid, "DS2", HDF5Constants.H5P_DEFAULT);
+            }
+            catch (Throwable err) {
+                err.printStackTrace();
+                fail("testH5OcopyRefsDatasettosameFile: H5Rcreate_object " + err);
+            }
+    
+            try {
+                //Create a dataset and write object references to it.
+                dataset_id = H5.H5Dcreate(H5fid, "DSREF",
+                        HDF5Constants.H5T_STD_REF, H5dsid,
+                        HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+                assertTrue("testH5OcopyRefsDatasettosameFile.H5Dcreate: ", dataset_id >= 0);
+                H5.H5Dwrite(dataset_id, HDF5Constants.H5T_STD_REF,
+                        HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
+                        HDF5Constants.H5P_DEFAULT, dset_data);
+                //Close the dataset.
+                H5.H5Dclose(dataset_id);
+            }
+            catch (Exception ex) {
+                fail("testH5OcopyRefsDatasettosameFile: create dataset failed");
+            }
+            finally {
+                try {H5.H5Dclose(dataset_id);} catch (Exception exx) {}
+            }
         }
         catch (Exception ex) {
-            try {H5.H5Dclose(dataset_id);} catch (Exception exx) {}
-            fail("testH5OcopyRefsDatasettosameFile: create dataset failed");
+            ex.printStackTrace();
+        }
+        finally {
+            try {H5.H5Rdestroy(dset_data[1]);} catch (Exception ex) {}
+            try {H5.H5Rdestroy(dset_data[0]);} catch (Exception ex) {}
         }
 
         try {
             ocp_plist_id = H5.H5Pcreate(HDF5Constants.H5P_OBJECT_COPY);
             assertTrue("testH5OcopyRefsDatasettosameFile.H5Pcreate: ", ocp_plist_id >= 0);
             H5.H5Pset_copy_object(ocp_plist_id, HDF5Constants.H5O_COPY_EXPAND_REFERENCE_FLAG);
+            //Perform copy function.
+            try {
+                H5.H5Ocopy(H5fid, "DSREF", H5fid, "CPYREFD", ocp_plist_id, HDF5Constants.H5P_DEFAULT);
+            }
+            catch(Exception ex) {
+                fail("testH5OcopyRefsDatasettosameFile: H5Ocopy failed");
+            }
         }
         catch (Exception ex) {
-            try {H5.H5Pclose(ocp_plist_id);} catch (Exception exx) {}
             fail("testH5OcopyRefsDatasettosameFile: H5Pset_copy_object failed");
         }
-
-        //Perform copy function.
-        try {
-            H5.H5Ocopy(H5fid, "DSREF", H5fid, "CPYREFD", ocp_plist_id, HDF5Constants.H5P_DEFAULT);
-        }
-        catch(Exception ex) {
+        finally {
             try {H5.H5Pclose(ocp_plist_id);} catch (Exception exx) {}
-            fail("testH5OcopyRefsDatasettosameFile: H5Ocopy failed");
         }
 
-        //Open the dataset that has been copied
         try {
-            did = H5.H5Dopen(H5fid, "DSREF", HDF5Constants.H5P_DEFAULT);
-            assertTrue("testH5OcopyRefsDatasettosameFile.H5Dopen: ", did >= 0);
+            //Open the dataset that has been copied
+            try {
+                did = H5.H5Dopen(H5fid, "DSREF", HDF5Constants.H5P_DEFAULT);
+                assertTrue("testH5OcopyRefsDatasettosameFile.H5Dopen: ", did >= 0);
+            }
+            catch (Exception e) {
+                e.printStackTrace();
+                fail("testH5OcopyRefsDatasettosameFile: H5Dopen failed");
+            }
+
+            //Read the dataset object references in the read_data buffer.
+            try {
+                H5.H5Dread(did, HDF5Constants.H5T_STD_REF, HDF5Constants.H5S_ALL,HDF5Constants.H5S_ALL, HDF5Constants.H5P_DEFAULT, read_data);
+            }
+            catch (Exception e) {
+                e.printStackTrace();
+                fail("testH5OcopyRefsDatasettosameFile: H5Dread failed");
+            }
         }
-        catch (Exception e) {
-            try {H5.H5Dclose(did);} catch (Exception exx) {}
-            e.printStackTrace();
-            fail("testH5OcopyRefsDatasettosameFile: H5Dopen failed");
+        catch (Exception ex) {
+            ex.printStackTrace();
+            fail("testH5OcopyRefsDatasettosameFile: open and read dataset failed");
+        }
+        finally {
+            try {H5.H5Dclose(did);} catch (Exception ex) {}
         }
 
         try {
-            //Read the dataset object references in the read_data buffer.
-            H5.H5Dread(did, HDF5Constants.H5T_STD_REF_OBJ, HDF5Constants.H5S_ALL,HDF5Constants.H5S_ALL, HDF5Constants.H5P_DEFAULT, read_data);
-            System.arraycopy(read_data, 0, rbuf0, 0, 8);
-            System.arraycopy(read_data, 8, rbuf1, 0, 8);
-
             //Get the type of object the reference points to.
-            obj_type = H5.H5Rget_obj_type(H5fid, HDF5Constants.H5R_OBJECT, rbuf1);
+            obj_type = H5.H5Rget_obj_type3(read_data[1], HDF5Constants.H5R_OBJECT);
             assertEquals(obj_type, HDF5Constants.H5O_TYPE_DATASET);
-
-            obj_type = H5.H5Rget_obj_type(H5fid, HDF5Constants.H5R_OBJECT, rbuf0);
+    
+            obj_type = H5.H5Rget_obj_type3(read_data[0], HDF5Constants.H5R_OBJECT);
             assertEquals(obj_type, HDF5Constants.H5O_TYPE_GROUP);
         }
         catch (Exception ex) {
             ex.printStackTrace();
         }
         finally {
-            try {H5.H5Dclose(did);} catch (Exception ex) {}
-            try {H5.H5Pclose(ocp_plist_id);} catch (Exception ex) {}
+            try {H5.H5Rdestroy(read_data[1]);} catch (Exception ex) {}
+            try {H5.H5Rdestroy(read_data[0]);} catch (Exception ex) {}
+        }
+    }
+    
+    @Test
+    public void testH5OcopyNullRef() throws Throwable {
+        final long _pid_ = HDF5Constants.H5P_DEFAULT;
+        long sid = HDF5Constants.H5I_INVALID_HID;
+        long did = HDF5Constants.H5I_INVALID_HID;
+        long aid = HDF5Constants.H5I_INVALID_HID;
+
+        try {
+            sid = H5.H5Screate_simple(1, new long[] {1}, null);
+            assertTrue("testH5OcopyNullRef.H5Screate_simple: ", sid >= 0);
+            did = H5.H5Dcreate(H5fid, "Dataset_with_null_Ref", HDF5Constants.H5T_NATIVE_INT, sid, _pid_, _pid_, _pid_);
+            assertTrue("testH5OcopyNullRef.H5Dcreate: ", did > 0);
+            aid = H5.H5Acreate(did, "Null_Ref", HDF5Constants.H5T_STD_REF, sid, _pid_, _pid_);
+            assertTrue("testH5OcopyNullRef.H5Acreate: ", aid > 0);
         }
-     }
-
-//    @Ignore because of JIRA HDF5-9547
-//    @Test(expected = HDF5LibraryException.class)
-//    public void testH5OcopyInvalidRef() throws Throwable {
-//        final long _pid_ = HDF5Constants.H5P_DEFAULT;
-//        long sid = HDF5Constants.H5I_INVALID_HID;
-//        long did = HDF5Constants.H5I_INVALID_HID;
-//        long aid = HDF5Constants.H5I_INVALID_HID;
-//
-//        try {
-//            sid = H5.H5Screate_simple(1, new long[] {1}, null);
-//            assertTrue("testH5OcopyInvalidRef.H5Screate_simple: ", sid >= 0);
-//            did = H5.H5Dcreate(H5fid, "Dataset_with_invalid_Ref", HDF5Constants.H5T_NATIVE_INT, sid, _pid_, _pid_, _pid_);
-//            assertTrue("testH5OcopyInvalidRef.H5Dcreate: ", did > 0);
-//            aid = H5.H5Acreate(did, "Invalid_Ref", HDF5Constants.H5T_STD_REF_OBJ, sid, _pid_, _pid_);
-//            assertTrue("testH5OcopyInvalidRef.H5Acreate: ", aid > 0);
-//            H5.H5Awrite(aid, HDF5Constants.H5T_STD_REF_OBJ, new long[]{-1});
-//        }
-//        catch (Exception ex) {
-//            ex.printStackTrace();
-//        }
-//        finally {
-//            try {H5.H5Dclose(did);} catch (Exception exx) {}
-//            try {H5.H5Aclose(aid);} catch (Exception exx) {}
-//            try {H5.H5Sclose(sid);} catch (Exception exx) {}
-//        }
-//
-//        long ocp_plist_id = H5.H5Pcreate(HDF5Constants.H5P_OBJECT_COPY);
-//        assertTrue("testH5OcopyInvalidRef.H5Pcreate: ", ocp_plist_id >= 0);
-//        H5.H5Pset_copy_object(ocp_plist_id, HDF5Constants.H5O_COPY_EXPAND_REFERENCE_FLAG);
-//        try {
-//            H5.H5Ocopy(H5fid, "/Dataset_with_invalid_Ref", H5fid, "/Dataset_with_invalid_Ref_cp", ocp_plist_id, _pid_);
-//        }
-//        finally {
-//            try {H5.H5Pclose(ocp_plist_id);} catch (Exception exx) {}
-//        }
-//    }
+        catch (Exception ex) {
+            ex.printStackTrace();
+        }
+        finally {
+            try {H5.H5Dclose(did);} catch (Exception exx) {}
+            try {H5.H5Aclose(aid);} catch (Exception exx) {}
+            try {H5.H5Sclose(sid);} catch (Exception exx) {}
+        }
+
+        long ocp_plist_id = H5.H5Pcreate(HDF5Constants.H5P_OBJECT_COPY);
+        assertTrue("testH5OcopyNullRef.H5Pcreate: ", ocp_plist_id >= 0);
+        H5.H5Pset_copy_object(ocp_plist_id, HDF5Constants.H5O_COPY_EXPAND_REFERENCE_FLAG);
+        try {
+            H5.H5Ocopy(H5fid, "/Dataset_with_null_Ref", H5fid, "/Dataset_with_null_Ref_cp", ocp_plist_id, _pid_);
+        }
+        finally {
+            try {H5.H5Pclose(ocp_plist_id);} catch (Exception exx) {}
+        }
+    }
 
 }
diff --git a/java/test/TestH5OcopyOld.java b/java/test/TestH5OcopyOld.java
new file mode 100644
index 0000000..b360cd0
--- /dev/null
+++ b/java/test/TestH5OcopyOld.java
@@ -0,0 +1,398 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by The HDF Group.                                               *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of HDF5.  The full HDF5 copyright notice, including     *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the COPYING file, which can be found at the root of the source code       *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
+ * If you do not have access to either file, you may request a copy from     *
+ * help@hdfgroup.org.                                                        *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+package test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import java.io.File;
+
+import hdf.hdf5lib.H5;
+import hdf.hdf5lib.HDF5Constants;
+import hdf.hdf5lib.exceptions.HDF5Exception;
+import hdf.hdf5lib.exceptions.HDF5LibraryException;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Ignore;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.TestName;
+
+public class TestH5OcopyOld {
+    @Rule public TestName testname = new TestName();
+    private static final String FILENAME = "testRefsattribute.h5";
+    private static final int DIM_X = 4;
+    private static final int DIM_Y = 6;
+    long H5fid = HDF5Constants.H5I_INVALID_HID;
+    long H5dsid = HDF5Constants.H5I_INVALID_HID;
+    long H5did1 = HDF5Constants.H5I_INVALID_HID;
+    long H5did2 = HDF5Constants.H5I_INVALID_HID;
+    long H5gcpl = HDF5Constants.H5I_INVALID_HID;
+    long H5gid = HDF5Constants.H5I_INVALID_HID;
+    long H5dsid2 = HDF5Constants.H5I_INVALID_HID;
+    long[] dims = { 2 };
+
+    private final void _deleteFile(String filename) {
+        File file = new File(filename);
+
+        if (file.exists()) {
+            try {
+                file.delete();
+            }
+            catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    private final long _createDataset(long fid, long dsid, String name, long dapl) {
+        long did = HDF5Constants.H5I_INVALID_HID;
+        try {
+            did = H5.H5Dcreate(fid, name,
+                        HDF5Constants.H5T_STD_I32BE, dsid,
+                        HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, dapl);
+        }
+        catch (Throwable err) {
+            err.printStackTrace();
+            fail("H5.H5Dcreate: " + err);
+        }
+        assertTrue("TestH5O._createDataset: ",did >= 0);
+
+        return did;
+    }
+
+    private final long _createGroup(long fid, String name) {
+        long gid = HDF5Constants.H5I_INVALID_HID;
+        try {
+            H5gcpl = HDF5Constants.H5P_DEFAULT;
+            gid = H5.H5Gcreate(fid, name, HDF5Constants.H5P_DEFAULT,
+                    H5gcpl, HDF5Constants.H5P_DEFAULT);
+        }
+        catch (Throwable err) {
+            err.printStackTrace();
+            fail("H5.H5Gcreate: " + err);
+        }
+        assertTrue("TestH5O._createGroup: ",gid >= 0);
+
+        return gid;
+    }
+
+    @Before
+    public void createH5file()
+            throws NullPointerException, HDF5Exception {
+        assertTrue("H5 open ids is 0",H5.getOpenIDCount()==0);
+        System.out.print(testname.getMethodName());
+        try {
+            H5fid = H5.H5Fcreate(FILENAME, HDF5Constants.H5F_ACC_TRUNC,
+                    HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+            H5dsid2 =  H5.H5Screate(HDF5Constants.H5S_SCALAR);
+            H5did1 = _createDataset(H5fid, H5dsid2, "DS2", HDF5Constants.H5P_DEFAULT);
+            H5dsid = H5.H5Screate_simple(1, dims, null);
+            H5gid = _createGroup(H5fid, "/G1");
+            H5did2 = _createDataset(H5gid, H5dsid, "DS1", HDF5Constants.H5P_DEFAULT);
+        }
+        catch (Throwable err) {
+            err.printStackTrace();
+            fail("TestH5O.createH5file: " + err);
+        }
+        assertTrue("TestH5O.createH5file: H5.H5Fcreate: ",H5fid >= 0);
+        assertTrue("TestH5O.createH5file: H5.H5Screate_simple: ",H5dsid >= 0);
+        assertTrue("TestH5O.createH5file: H5.H5Gcreate: ",H5gid >= 0);
+
+        H5.H5Fflush(H5fid, HDF5Constants.H5F_SCOPE_LOCAL);
+    }
+
+    @After
+    public void deleteH5file() throws HDF5LibraryException {
+        if (H5gid > 0)
+            try {H5.H5Gclose(H5gid);} catch (Exception ex) {}
+        if (H5did2 > 0)
+            try {H5.H5Dclose(H5did2);} catch (Exception ex) {}
+        if (H5dsid > 0)
+            try {H5.H5Sclose(H5dsid);} catch (Exception ex) {}
+        if (H5dsid2 > 0)
+            try {H5.H5Sclose(H5dsid2);} catch (Exception ex) {}
+        if (H5did1 > 0)
+            try {H5.H5Dclose(H5did1);} catch (Exception ex) {}
+        if (H5fid > 0)
+            try {H5.H5Fclose(H5fid);} catch (Exception ex) {}
+
+        _deleteFile(FILENAME);
+        System.out.println();
+    }
+
+    @Test
+    public void testH5OcopyRefsAttr() {
+        long ocp_plist_id = HDF5Constants.H5I_INVALID_HID;
+        byte rbuf0[]=null , rbuf1[] = null;
+        byte[] dset_data = new byte[16];
+        long attribute_id = HDF5Constants.H5I_INVALID_HID;
+
+
+        try {
+            rbuf0 = H5.H5Rcreate(H5fid, "/G1", HDF5Constants.H5R_OBJECT, -1);
+            rbuf1 = H5.H5Rcreate(H5fid, "DS2", HDF5Constants.H5R_OBJECT, -1);
+            //System.arraycopy(rbuf0, 0, dset_data, 0, 8);
+            System.arraycopy(rbuf1, 0, dset_data, 8, 8);
+        }
+        catch (Exception ex) {
+            fail("testH5OcopyRefsAttr: H5Rcreate failed");
+        }
+
+        try {
+            attribute_id = H5.H5Acreate(H5did2, "A1", HDF5Constants.H5T_STD_REF_OBJ, H5dsid, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+            assertTrue("testH5OcopyRefsAttr.H5Acreate: ", attribute_id >= 0);
+            H5.H5Awrite(attribute_id, HDF5Constants.H5T_STD_REF_OBJ, dset_data);
+
+            H5.H5Aclose(attribute_id);
+        }
+        catch (Exception ex) {
+            fail("testH5OcopyRefsAttr: H5Awrite failed");
+        }
+        finally {
+            try {H5.H5Aclose(attribute_id);} catch (Exception exx) {}
+        }
+
+        try {
+            ocp_plist_id = H5.H5Pcreate(HDF5Constants.H5P_OBJECT_COPY);
+            assertTrue("testH5OcopyRefsAttr.H5Pcreate: ", ocp_plist_id >= 0);
+            H5.H5Pset_copy_object(ocp_plist_id, HDF5Constants.H5O_COPY_EXPAND_REFERENCE_FLAG);
+            H5.H5Ocopy(H5fid, ".", H5fid, "CPYREF", ocp_plist_id, HDF5Constants.H5P_DEFAULT);
+        }
+        catch (Exception ex) {
+             fail("testH5OcopyRefsAttr: H5Ocopy failed");
+        }
+        finally {
+            try {H5.H5Pclose(ocp_plist_id);} catch (Exception ex) {}
+        }
+    }
+
+    @Test
+    public void testH5OcopyRefsDatasettodiffFile() {
+        byte rbuf1[] = null;
+        byte[] dset_data = new byte[16];
+        long ocp_plist_id = HDF5Constants.H5I_INVALID_HID;
+        long dataset_id = HDF5Constants.H5I_INVALID_HID;
+        long H5fid2 = HDF5Constants.H5I_INVALID_HID;
+
+        try {
+            rbuf1 = H5.H5Rcreate(H5fid, "DS2", HDF5Constants.H5R_OBJECT, -1);
+            System.arraycopy(rbuf1, 0, dset_data, 8, 8);
+
+            dataset_id = H5.H5Dcreate(H5fid, "DSREF",
+                    HDF5Constants.H5T_STD_REF_OBJ, H5dsid,
+                    HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+            assertTrue("testH5OcopyRefsDatasettodiffFile.H5Dcreate: ", dataset_id >= 0);
+            H5.H5Dwrite(dataset_id, HDF5Constants.H5T_STD_REF_OBJ,
+                    HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
+                    HDF5Constants.H5P_DEFAULT, dset_data);
+            H5.H5Dclose(dataset_id);
+        }
+        catch (Exception ex) {
+            fail("testH5OcopyRefsDatasettodiffFile: create dataset failed");
+        }
+        finally {
+            try {H5.H5Dclose(dataset_id);} catch (Exception exx) {}
+        }
+
+        try {
+            //create new file
+            H5fid2 = H5.H5Fcreate("copy.h5", HDF5Constants.H5F_ACC_TRUNC,
+                    HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+            assertTrue("testH5OcopyRefsDatasettodiffFile.H5Fcreate: ", H5fid2 >= 0);
+            H5.H5Fflush(H5fid2, HDF5Constants.H5F_SCOPE_LOCAL);
+        }
+        catch (Exception ex) {
+            try {H5.H5Fclose(H5fid2);} catch (Exception exx) {}
+            fail("testH5OcopyRefsDatasettodiffFile: H5Fcreate failed");
+        }
+
+        try {
+            //create object copy property list id and set the flags.
+            ocp_plist_id = H5.H5Pcreate(HDF5Constants.H5P_OBJECT_COPY);
+            assertTrue("testH5OcopyRefsDatasettodiffFile.H5Pcreate: ", ocp_plist_id >= 0);
+            H5.H5Pset_copy_object(ocp_plist_id, HDF5Constants.H5O_COPY_EXPAND_REFERENCE_FLAG);
+
+            //Perform copy function.
+            H5.H5Ocopy(H5fid, ".", H5fid2, "CPYREFD", ocp_plist_id, HDF5Constants.H5P_DEFAULT);
+        }
+        catch (Exception ex){
+            ex.printStackTrace();
+            fail("testH5OcopyRefsDatasettodiffFile: H5Ocopy failed");
+        }
+        finally {
+            try {H5.H5Pclose(ocp_plist_id);} catch (Exception ex) {}
+            try {H5.H5Fclose(H5fid2);} catch (Exception ex) {}
+        }
+        _deleteFile("copy.h5");
+    }
+
+    @Test
+    public void testH5OcopyRefsDatasettosameFile() {
+        byte rbuf0[]=null , rbuf1[] = null;
+        byte[] dset_data = new byte[16];
+        long ocp_plist_id = HDF5Constants.H5I_INVALID_HID;
+        long dataset_id = HDF5Constants.H5I_INVALID_HID;
+        long did = HDF5Constants.H5I_INVALID_HID;
+        int obj_type = -1;
+        byte[] read_data = new byte[16];
+
+        try {
+            rbuf0 = H5.H5Rcreate(H5fid, "/G1", HDF5Constants.H5R_OBJECT, -1);
+            rbuf1 = H5.H5Rcreate(H5fid, "DS2", HDF5Constants.H5R_OBJECT, -1);
+            System.arraycopy(rbuf0, 0, dset_data, 0, 8);
+            System.arraycopy(rbuf1, 0, dset_data, 8, 8);
+
+            //Create a dataset and write object references to it.
+            dataset_id = H5.H5Dcreate(H5fid, "DSREF",
+                    HDF5Constants.H5T_STD_REF_OBJ, H5dsid,
+                    HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+            assertTrue("testH5OcopyRefsDatasettosameFile.H5Dcreate: ", dataset_id >= 0);
+            H5.H5Dwrite(dataset_id, HDF5Constants.H5T_STD_REF_OBJ,
+                    HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
+                    HDF5Constants.H5P_DEFAULT, dset_data);
+            //Close the dataset.
+            H5.H5Dclose(dataset_id);
+        }
+        catch (Exception ex) {
+            try {H5.H5Dclose(dataset_id);} catch (Exception exx) {}
+            fail("testH5OcopyRefsDatasettosameFile: create dataset failed");
+        }
+
+        try {
+            ocp_plist_id = H5.H5Pcreate(HDF5Constants.H5P_OBJECT_COPY);
+            assertTrue("testH5OcopyRefsDatasettosameFile.H5Pcreate: ", ocp_plist_id >= 0);
+            H5.H5Pset_copy_object(ocp_plist_id, HDF5Constants.H5O_COPY_EXPAND_REFERENCE_FLAG);
+        }
+        catch (Exception ex) {
+            try {H5.H5Pclose(ocp_plist_id);} catch (Exception exx) {}
+            fail("testH5OcopyRefsDatasettosameFile: H5Pset_copy_object failed");
+        }
+
+        //Perform copy function.
+        try {
+            H5.H5Ocopy(H5fid, "DSREF", H5fid, "CPYREFD", ocp_plist_id, HDF5Constants.H5P_DEFAULT);
+        }
+        catch(Exception ex) {
+            try {H5.H5Pclose(ocp_plist_id);} catch (Exception exx) {}
+            fail("testH5OcopyRefsDatasettosameFile: H5Ocopy failed");
+        }
+
+        //Open the dataset that has been copied
+        try {
+            did = H5.H5Dopen(H5fid, "DSREF", HDF5Constants.H5P_DEFAULT);
+            assertTrue("testH5OcopyRefsDatasettosameFile.H5Dopen: ", did >= 0);
+        }
+        catch (Exception e) {
+            try {H5.H5Dclose(did);} catch (Exception exx) {}
+            e.printStackTrace();
+            fail("testH5OcopyRefsDatasettosameFile: H5Dopen failed");
+        }
+
+        try {
+            //Read the dataset object references in the read_data buffer.
+            H5.H5Dread(did, HDF5Constants.H5T_STD_REF_OBJ, HDF5Constants.H5S_ALL,HDF5Constants.H5S_ALL, HDF5Constants.H5P_DEFAULT, read_data);
+            System.arraycopy(read_data, 0, rbuf0, 0, 8);
+            System.arraycopy(read_data, 8, rbuf1, 0, 8);
+
+            //Get the type of object the reference points to.
+            obj_type = H5.H5Rget_obj_type(H5fid, HDF5Constants.H5R_OBJECT, rbuf1);
+            assertEquals(obj_type, HDF5Constants.H5O_TYPE_DATASET);
+
+            obj_type = H5.H5Rget_obj_type(H5fid, HDF5Constants.H5R_OBJECT, rbuf0);
+            assertEquals(obj_type, HDF5Constants.H5O_TYPE_GROUP);
+        }
+        catch (Exception ex) {
+            ex.printStackTrace();
+        }
+        finally {
+            try {H5.H5Dclose(did);} catch (Exception ex) {}
+            try {H5.H5Pclose(ocp_plist_id);} catch (Exception ex) {}
+        }
+     }
+    
+    @Test
+    public void testH5OcopyNullRef() throws Throwable {
+        final long _pid_ = HDF5Constants.H5P_DEFAULT;
+        long sid = HDF5Constants.H5I_INVALID_HID;
+        long did = HDF5Constants.H5I_INVALID_HID;
+        long aid = HDF5Constants.H5I_INVALID_HID;
+
+        try {
+            sid = H5.H5Screate_simple(1, new long[] {1}, null);
+            assertTrue("testH5OcopyNullRef.H5Screate_simple: ", sid >= 0);
+            did = H5.H5Dcreate(H5fid, "Dataset_with_null_Ref", HDF5Constants.H5T_NATIVE_INT, sid, _pid_, _pid_, _pid_);
+            assertTrue("testH5OcopyNullRef.H5Dcreate: ", did > 0);
+            aid = H5.H5Acreate(did, "Null_Ref", HDF5Constants.H5T_STD_REF_OBJ, sid, _pid_, _pid_);
+            assertTrue("testH5OcopyNullRef.H5Acreate: ", aid > 0);
+        }
+        catch (Exception ex) {
+            ex.printStackTrace();
+        }
+        finally {
+            try {H5.H5Dclose(did);} catch (Exception exx) {}
+            try {H5.H5Aclose(aid);} catch (Exception exx) {}
+            try {H5.H5Sclose(sid);} catch (Exception exx) {}
+        }
+
+        long ocp_plist_id = H5.H5Pcreate(HDF5Constants.H5P_OBJECT_COPY);
+        assertTrue("testH5OcopyNullRef.H5Pcreate: ", ocp_plist_id >= 0);
+        H5.H5Pset_copy_object(ocp_plist_id, HDF5Constants.H5O_COPY_EXPAND_REFERENCE_FLAG);
+        try {
+            H5.H5Ocopy(H5fid, "/Dataset_with_null_Ref", H5fid, "/Dataset_with_null_Ref_cp", ocp_plist_id, _pid_);
+        }
+        finally {
+            try {H5.H5Pclose(ocp_plist_id);} catch (Exception exx) {}
+        }
+    }
+
+//    @Ignore because of JIRA HDF5-9547
+//    @Test(expected = HDF5LibraryException.class)
+//    public void testH5OcopyInvalidRef() throws Throwable {
+//        final long _pid_ = HDF5Constants.H5P_DEFAULT;
+//        long sid = HDF5Constants.H5I_INVALID_HID;
+//        long did = HDF5Constants.H5I_INVALID_HID;
+//        long aid = HDF5Constants.H5I_INVALID_HID;
+//
+//        try {
+//            sid = H5.H5Screate_simple(1, new long[] {1}, null);
+//            assertTrue("testH5OcopyInvalidRef.H5Screate_simple: ", sid >= 0);
+//            did = H5.H5Dcreate(H5fid, "Dataset_with_invalid_Ref", HDF5Constants.H5T_NATIVE_INT, sid, _pid_, _pid_, _pid_);
+//            assertTrue("testH5OcopyInvalidRef.H5Dcreate: ", did > 0);
+//            aid = H5.H5Acreate(did, "Invalid_Ref", HDF5Constants.H5T_STD_REF_OBJ, sid, _pid_, _pid_);
+//            assertTrue("testH5OcopyInvalidRef.H5Acreate: ", aid > 0);
+//            H5.H5Awrite(aid, HDF5Constants.H5T_STD_REF_OBJ, new long[]{-1});
+//        }
+//        catch (Exception ex) {
+//            ex.printStackTrace();
+//        }
+//        finally {
+//            try {H5.H5Dclose(did);} catch (Exception exx) {}
+//            try {H5.H5Aclose(aid);} catch (Exception exx) {}
+//            try {H5.H5Sclose(sid);} catch (Exception exx) {}
+//        }
+//
+//        long ocp_plist_id = H5.H5Pcreate(HDF5Constants.H5P_OBJECT_COPY);
+//        assertTrue("testH5OcopyInvalidRef.H5Pcreate: ", ocp_plist_id >= 0);
+//        H5.H5Pset_copy_object(ocp_plist_id, HDF5Constants.H5O_COPY_EXPAND_REFERENCE_FLAG);
+//        try {
+//            H5.H5Ocopy(H5fid, "/Dataset_with_invalid_Ref", H5fid, "/Dataset_with_invalid_Ref_cp", ocp_plist_id, _pid_);
+//        }
+//        finally {
+//            try {H5.H5Pclose(ocp_plist_id);} catch (Exception exx) {}
+//        }
+//    }
+
+}
diff --git a/java/test/TestH5P.java b/java/test/TestH5P.java
index 3879128..6ae93d9 100644
--- a/java/test/TestH5P.java
+++ b/java/test/TestH5P.java
@@ -1173,12 +1173,12 @@ public class TestH5P {
             strategy = H5.H5Pget_file_space_strategy(fcpl_id, persist, threshold);
             assertTrue("strategy(default): "+strategy, strategy == HDF5Constants.H5F_FSPACE_STRATEGY_FSM_AGGR);
             assertTrue("persist(default): "+persist[0], persist[0] == false);
-            assertTrue("theshold(default): "+threshold[0], threshold[0] == 1);
+            assertTrue("threshold(default): "+threshold[0], threshold[0] == 1);
             H5.H5Pset_file_space_strategy(fcpl_id, HDF5Constants.H5F_FSPACE_STRATEGY_PAGE, true, 1);
             strategy = H5.H5Pget_file_space_strategy(fcpl_id, persist, threshold);
             assertTrue("strategy: "+strategy, strategy == HDF5Constants.H5F_FSPACE_STRATEGY_PAGE);
             assertTrue("persist: "+persist[0], persist[0] == true);
-            assertTrue("theshold: "+threshold[0], threshold[0] == 1);
+            assertTrue("threshold: "+threshold[0], threshold[0] == 1);
         }
         catch (Throwable err) {
             err.printStackTrace();
diff --git a/java/test/TestH5Pfapl.java b/java/test/TestH5Pfapl.java
index a65b52e..f6be24f 100644
--- a/java/test/TestH5Pfapl.java
+++ b/java/test/TestH5Pfapl.java
@@ -892,7 +892,7 @@ public class TestH5Pfapl {
         try {
             H5.H5Pset_fapl_multi(fapl_id, member_map, member_fapl, member_name, member_addr, true);
             long driver_type = H5.H5Pget_driver(fapl_id);
-            assertTrue("H5Pget_driver: muti = "+ driver_type, HDF5Constants.H5FD_MULTI==driver_type);
+            assertTrue("H5Pget_driver: multi = "+ driver_type, HDF5Constants.H5FD_MULTI==driver_type);
         }
         catch (Throwable err) {
             err.printStackTrace();
@@ -932,7 +932,7 @@ public class TestH5Pfapl {
         try {
             H5.H5Pset_fapl_multi(fapl_id, member_map, member_fapl, member_name, member_addr, true);
             long driver_type = H5.H5Pget_driver(fapl_id);
-            assertTrue("H5Pget_driver: muti = "+ driver_type, HDF5Constants.H5FD_MULTI==driver_type);
+            assertTrue("H5Pget_driver: multi = "+ driver_type, HDF5Constants.H5FD_MULTI==driver_type);
         }
         catch (Throwable err) {
             err.printStackTrace();
@@ -1001,7 +1001,7 @@ public class TestH5Pfapl {
         try {
             H5.H5Pset_fapl_multi(fapl_id, member_map, member_fapl, member_name, member_addr, true);
             long driver_type = H5.H5Pget_driver(fapl_id);
-            assertTrue("H5Pget_driver: muti = "+ driver_type, HDF5Constants.H5FD_MULTI==driver_type);
+            assertTrue("H5Pget_driver: multi = "+ driver_type, HDF5Constants.H5FD_MULTI==driver_type);
         }
         catch (Throwable err) {
             err.printStackTrace();
@@ -1223,7 +1223,7 @@ public class TestH5Pfapl {
         try {
             H5.H5Pset_fapl_multi(fapl_id, member_map, member_fapl, member_name, member_addr, true);
             long driver_type = H5.H5Pget_driver(fapl_id);
-            assertTrue("H5Pget_driver: muti = "+ driver_type, HDF5Constants.H5FD_MULTI==driver_type);
+            assertTrue("H5Pget_driver: multi = "+ driver_type, HDF5Constants.H5FD_MULTI==driver_type);
         }
         catch (Throwable err) {
             err.printStackTrace();
diff --git a/java/test/TestH5Plist.java b/java/test/TestH5Plist.java
index 0d53071..03e1c8f 100644
--- a/java/test/TestH5Plist.java
+++ b/java/test/TestH5Plist.java
@@ -148,7 +148,7 @@ public class TestH5Plist {
             }
             assertTrue("H5Pequal cid2", status >= 0);
 
-            // Make certain false postives aren't being returned
+            // Make certain false positives aren't being returned
             try {
                 status = H5.H5Pequal(cid2, HDF5Constants.H5P_FILE_CREATE);
             }
@@ -295,7 +295,7 @@ public class TestH5Plist {
         }
         assertTrue("H5Pget_nprops: "+nprops, nprops==0);
 
-        // Check the existance of the first property (should fail)
+        // Check the existence of the first property (should fail)
         try {
             status = H5.H5Pexist(plist_class_id, PROP1_NAME);
         }
@@ -326,7 +326,7 @@ public class TestH5Plist {
         catch (Throwable err) {
         }
 
-        // Check the existance of the first property
+        // Check the existence of the first property
         try {
             status = H5.H5Pexist(plist_class_id, PROP1_NAME);
         }
@@ -377,7 +377,7 @@ public class TestH5Plist {
         catch (Throwable err) {
         }
 
-        // Check the existance of the second property
+        // Check the existence of the second property
         try {
             status = H5.H5Pexist(plist_class_id, PROP2_NAME);
         }
@@ -418,7 +418,7 @@ public class TestH5Plist {
             fail("H5Pregister2 plist_class_id: "+PROP3_NAME + err);
         }
 
-        // Check the existance of the third property
+        // Check the existence of the third property
         try {
             status = H5.H5Pexist(plist_class_id, PROP3_NAME);
         }
diff --git a/java/test/junit.sh.in b/java/test/junit.sh.in
index 39db296..e096302 100644
--- a/java/test/junit.sh.in
+++ b/java/test/junit.sh.in
@@ -108,6 +108,7 @@ $HDFTEST_HOME/testfiles/JUnit-TestH5Arw.txt
 $HDFTEST_HOME/testfiles/JUnit-TestH5Oparams.txt
 $HDFTEST_HOME/testfiles/JUnit-TestH5Obasic.txt
 $HDFTEST_HOME/testfiles/JUnit-TestH5Ocreate.txt
+$HDFTEST_HOME/testfiles/JUnit-TestH5OcopyOld.txt
 $HDFTEST_HOME/testfiles/JUnit-TestH5Ocopy.txt
 $HDFTEST_HOME/testfiles/JUnit-TestH5PL.txt
 $HDFTEST_HOME/testfiles/JUnit-TestH5VL.txt
@@ -1030,6 +1031,27 @@ else
     test yes = "$verbose" && $DIFF JUnit-TestH5Ocreate.txt JUnit-TestH5Ocreate.out |sed 's/^/    /'
 fi
 
+echo "$JAVAEXE $JAVAEXEFLAGS -Xmx1024M -Dorg.slf4j.simpleLogger.defaultLog=trace -Djava.library.path=$BLDLIBDIR -cp $CLASSPATH -ea org.junit.runner.JUnitCore test.TestH5OcopyOld"
+TESTING JUnit-TestH5OcopyOld
+($RUNSERIAL $JAVAEXE $JAVAEXEFLAGS -Xmx1024M -Dorg.slf4j.simpleLogger.defaultLog=trace -Djava.library.path=$BLDLIBDIR -cp $CLASSPATH -ea org.junit.runner.JUnitCore test.TestH5OcopyOld > JUnit-TestH5OcopyOld.ext)
+
+# Extract file name, line number, version and thread IDs because they may be different
+sed -e 's/thread [0-9]*/thread (IDs)/' -e 's/: .*\.c /: (file name) /' \
+    -e 's/line [0-9]*/line (number)/' \
+    -e 's/Time: [0-9]*[\.,[0-9]*]*/Time:  XXXX/' \
+    -e 's/v[1-9]*\.[0-9]*\./version (number)\./' \
+    -e 's/[1-9]*\.[0-9]*\.[0-9]*[^)]*/version (number)/' \
+    JUnit-TestH5OcopyOld.ext > JUnit-TestH5OcopyOld.out
+
+if diff JUnit-TestH5OcopyOld.out JUnit-TestH5OcopyOld.txt > /dev/null; then
+    echo "  PASSED      JUnit-TestH5OcopyOld"
+else
+    echo "**FAILED**    JUnit-TestH5OcopyOld"
+    echo "    Expected result differs from actual result"
+    nerrors="`expr $nerrors + 1`"
+    test yes = "$verbose" && $DIFF JUnit-TestH5OcopyOld.txt JUnit-TestH5OcopyOld.out |sed 's/^/    /'
+fi
+
 echo "$JAVAEXE $JAVAEXEFLAGS -Xmx1024M -Dorg.slf4j.simpleLogger.defaultLog=trace -Djava.library.path=$BLDLIBDIR -cp $CLASSPATH -ea org.junit.runner.JUnitCore test.TestH5Ocopy"
 TESTING JUnit-TestH5Ocopy
 ($RUNSERIAL $JAVAEXE $JAVAEXEFLAGS -Xmx1024M -Dorg.slf4j.simpleLogger.defaultLog=trace -Djava.library.path=$BLDLIBDIR -cp $CLASSPATH -ea org.junit.runner.JUnitCore test.TestH5Ocopy > JUnit-TestH5Ocopy.ext)
diff --git a/java/test/testfiles/JUnit-TestH5Ocopy.txt b/java/test/testfiles/JUnit-TestH5Ocopy.txt
index 32dfde7..7f66410 100644
--- a/java/test/testfiles/JUnit-TestH5Ocopy.txt
+++ b/java/test/testfiles/JUnit-TestH5Ocopy.txt
@@ -1,9 +1,10 @@
 JUnit version 4.11
 .testH5OcopyRefsDatasettosameFile
+.testH5OcopyNullRef
 .testH5OcopyRefsDatasettodiffFile
 .testH5OcopyRefsAttr
 
 Time:  XXXX
 
-OK (3 tests)
+OK (4 tests)
 
diff --git a/java/test/testfiles/JUnit-TestH5OcopyOld.txt b/java/test/testfiles/JUnit-TestH5OcopyOld.txt
new file mode 100644
index 0000000..7f66410
--- /dev/null
+++ b/java/test/testfiles/JUnit-TestH5OcopyOld.txt
@@ -0,0 +1,10 @@
+JUnit version 4.11
+.testH5OcopyRefsDatasettosameFile
+.testH5OcopyNullRef
+.testH5OcopyRefsDatasettodiffFile
+.testH5OcopyRefsAttr
+
+Time:  XXXX
+
+OK (4 tests)
+