[svn-r29226] HDFFV-9552: merge in java code.

1 files changed, 112 insertions, 0 deletions

diff --git a/java/examples/intro/H5_ReadWrite.java b/java/examples/intro/H5_ReadWrite.java
new file mode 100644
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+++ b/java/examples/intro/H5_ReadWrite.java
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+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by The HDF Group.                                               *
+ * Copyright by the Board of Trustees of the University of Illinois.         *
+ * 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 files COPYING and Copyright.html.  COPYING can be found at the root   *
+ * of the source code distribution tree; Copyright.html can be found at the  *
+ * root level of an installed copy of the electronic HDF5 document set and   *
+ * is linked from the top-level documents page.  It can also be found at     *
+ * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
+ * access to either file, you may request a copy from help@hdfgroup.org.     *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/************************************************************
+   Writing and reading an existing dataset.
+ ************************************************************/
+
+package examples.intro;
+
+import hdf.hdf5lib.H5;
+import hdf.hdf5lib.HDF5Constants;
+
+public class H5_ReadWrite {
+    private static String FILENAME = "H5_ReadWrite.h5";
+    private static String DATASETNAME = "dset";
+    private static final int DIM_X = 4;
+    private static final int DIM_Y = 6;
+
+    private static void ReadWriteDataset() {
+        long file_id = -1;
+        long dataspace_id = -1;
+        long dataset_id = -1;
+        long[] dims = { DIM_X, DIM_Y };
+        int[][] dset_data = new int[DIM_X][DIM_Y];
+
+        // Initialize the dataset.
+        for (int indx = 0; indx < DIM_X; indx++)
+            for (int jndx = 0; jndx < DIM_Y; jndx++)
+                dset_data[indx][jndx] = indx * 6 + jndx + 1;
+
+        // Create a new file using default properties.
+        try {
+            file_id = H5.H5Fcreate(FILENAME, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT,
+                    HDF5Constants.H5P_DEFAULT);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Create the data space for the dataset.
+        try {
+            dataspace_id = H5.H5Screate_simple(2, dims, null);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Create the dataset.
+        try {
+            if ((file_id >= 0) && (dataspace_id >= 0))
+                dataset_id = H5.H5Dcreate(file_id, "/" + DATASETNAME, HDF5Constants.H5T_STD_I32BE, dataspace_id,
+                        HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Write the dataset.
+        try {
+            if (dataset_id >= 0)
+                H5.H5Dwrite(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
+                        HDF5Constants.H5P_DEFAULT, dset_data);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        try {
+            if (dataset_id >= 0)
+                H5.H5Dread(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
+                        HDF5Constants.H5P_DEFAULT, dset_data);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Close the dataset.
+        try {
+            if (dataset_id >= 0)
+                H5.H5Dclose(dataset_id);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Close the file.
+        try {
+            if (file_id >= 0)
+                H5.H5Fclose(file_id);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static void main(String[] args) {
+        H5_ReadWrite.ReadWriteDataset();
+    }
+
+}