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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. *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/************************************************************
+ This example shows how to create, open, and close a group.
+ ************************************************************/
+
+package examples.groups;
+
+import hdf.hdf5lib.H5;
+import hdf.hdf5lib.HDF5Constants;
+
+public class H5Ex_G_Create {
+ private static String FILENAME = "H5Ex_G_Create.h5";
+ private static String GROUPNAME = "G1";
+
+ private static void CreateGroup() {
+ long file_id = -1;
+ long group_id = -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 a group in the file.
+ try {
+ if (file_id >= 0)
+ group_id = H5.H5Gcreate(file_id, "/" + GROUPNAME, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT,
+ HDF5Constants.H5P_DEFAULT);
+ }
+ catch (Exception e) {
+ e.printStackTrace();
+ }
+
+ // Close the group. The handle "group" can no longer be used.
+ try {
+ if (group_id >= 0)
+ H5.H5Gclose(group_id);
+ }
+ catch (Exception e) {
+ e.printStackTrace();
+ }
+
+ // Re-open the group, obtaining a new handle.
+ try {
+ if (file_id >= 0)
+ group_id = H5.H5Gopen(file_id, "/" + GROUPNAME, HDF5Constants.H5P_DEFAULT);
+ }
+ catch (Exception e) {
+ e.printStackTrace();
+ }
+
+ // Close the group.
+ try {
+ if (group_id >= 0)
+ H5.H5Gclose(group_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) {
+ H5Ex_G_Create.CreateGroup();
+ }
+
+}