hdf5/java/examples/intro/H5_CreateGroup.java

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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.     *
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/************************************************************
    Creating and closing a group.
 ************************************************************/

package examples.intro;

import hdf.hdf5lib.H5;
import hdf.hdf5lib.HDF5Constants;

public class H5_CreateGroup {
    private static String FILENAME = "H5_CreateGroup.h5";
    private static String GROUPNAME = "MyGroup";

    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.
        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) {
        H5_CreateGroup.CreateGroup();
    }

}