/***************************************************************************** * Copyright by The HDF Group. * * Copyright by the Board of Trustees of the University of Illinois. * * All rights reserved. * * * * This file is part of the HDF Java Products distribution. * * The full 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. * * Or, see http://hdfgroup.org/products/hdf-java/doc/Copyright.html. * * If you do not have access to either file, you may request a copy from * * help@hdfgroup.org. * ****************************************************************************/ package jnative.h5; import ncsa.hdf.hdf5lib.H5; import ncsa.hdf.hdf5lib.HDF5Constants; /** *
* Title: HDF Native Package (Java) Example *
** Description: this example shows how to create HDF5 groups using the * "HDF Native Package (Java)". The example created the group structure: * *
* "/" (root) * g1 * g11 * g12 * g2 * g21 * g22 ** * */ public class HDF5GroupCreate { private static String fname = "HDF5GroupCreate.h5"; public static void main(String args[]) throws Exception { int file_id = -1; int subgroup_id = -1; int group_id1 = -1; int group_id2 = -1; // Create a new file using default properties. try { file_id = H5.H5Fcreate(fname, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); } catch (Exception e) { e.printStackTrace(); System.err.println("Failed to create file:" + fname); return; } // Create a group in the file. try { if (file_id >= 0) { group_id1 = H5.H5Gcreate(file_id, "g1", HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); if (group_id1 >= 0) { subgroup_id = H5.H5Gcreate(group_id1, "g11", HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); try { if (subgroup_id >= 0) H5.H5Gclose(subgroup_id); } catch (Exception e) { e.printStackTrace(); } subgroup_id = H5.H5Gcreate(group_id1, "g12", HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); try { if (subgroup_id >= 0) H5.H5Gclose(subgroup_id); } catch (Exception e) { e.printStackTrace(); } } group_id2 = H5.H5Gcreate(file_id, "g2", HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); if (group_id2 >= 0) { subgroup_id = H5.H5Gcreate(group_id2, "g21", HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); try { if (subgroup_id >= 0) H5.H5Gclose(subgroup_id); } catch (Exception e) { e.printStackTrace(); } subgroup_id = H5.H5Gcreate(group_id2, "g22", HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); try { if (subgroup_id >= 0) H5.H5Gclose(subgroup_id); } catch (Exception e) { e.printStackTrace(); } } } } catch (Exception e) { e.printStackTrace(); } // Close the groups. try { if (group_id2 >= 0) H5.H5Gclose(group_id2); } catch (Exception e) { e.printStackTrace(); } try { if (group_id1 >= 0) H5.H5Gclose(group_id1); } catch (Exception e) { e.printStackTrace(); } // Close the file. try { if (file_id >= 0) H5.H5Fclose(file_id); } catch (Exception e) { e.printStackTrace(); } } }