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89 lines
3.0 KiB
89 lines
3.0 KiB
2 years ago
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the COPYING file, which can be found at the root of the source code *
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* distribution tree, or in https://www.hdfgroup.org/licenses. *
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* If you do not have access to either file, you may request a copy from *
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* help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/************************************************************
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This example shows how to create, open, and close a group.
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************************************************************/
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package examples.groups;
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import hdf.hdf5lib.H5;
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import hdf.hdf5lib.HDF5Constants;
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public class H5Ex_G_Create {
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private static String FILENAME = "H5Ex_G_Create.h5";
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private static String GROUPNAME = "G1";
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private static void CreateGroup()
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{
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long file_id = HDF5Constants.H5I_INVALID_HID;
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long group_id = HDF5Constants.H5I_INVALID_HID;
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// Create a new file using default properties.
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try {
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file_id = H5.H5Fcreate(FILENAME, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT,
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HDF5Constants.H5P_DEFAULT);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Create a group in the file.
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try {
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if (file_id >= 0)
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group_id = H5.H5Gcreate(file_id, "/" + GROUPNAME, HDF5Constants.H5P_DEFAULT,
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HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Close the group. The handle "group" can no longer be used.
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try {
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if (group_id >= 0)
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H5.H5Gclose(group_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Re-open the group, obtaining a new handle.
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try {
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if (file_id >= 0)
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group_id = H5.H5Gopen(file_id, "/" + GROUPNAME, HDF5Constants.H5P_DEFAULT);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Close the group.
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try {
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if (group_id >= 0)
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H5.H5Gclose(group_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Close the file.
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try {
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if (file_id >= 0)
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H5.H5Fclose(file_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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}
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public static void main(String[] args) { H5Ex_G_Create.CreateGroup(); }
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}
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