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Diffstat (limited to 'HDF5Examples/JAVA/H5J/HDF5GroupCreate.java')
-rw-r--r-- | HDF5Examples/JAVA/H5J/HDF5GroupCreate.java | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/HDF5Examples/JAVA/H5J/HDF5GroupCreate.java b/HDF5Examples/JAVA/H5J/HDF5GroupCreate.java new file mode 100644 index 0000000..4a31c8f --- /dev/null +++ b/HDF5Examples/JAVA/H5J/HDF5GroupCreate.java @@ -0,0 +1,138 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * 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 COPYING file, which can be found at the root of the source code * + * distribution tree, or in https://www.hdfgroup.org/licenses. * + * If you do not have access to either file, you may request a copy from * + * help@hdfgroup.org. * + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ + +import hdf.hdf5lib.H5; +import hdf.hdf5lib.HDF5Constants; + +/** + * <p> + * Title: HDF Native Package (Java) Example + * </p> + * <p> + * Description: this example shows how to create HDF5 groups using the + * "HDF Native Package (Java)". The example created the group structure: + * + * <pre> + * "/" (root) + * g1 + * g11 + * g12 + * g2 + * g21 + * g22 + * </pre> + * + * </p> + */ +public class HDF5GroupCreate { + private static String fname = "HDF5GroupCreate.h5"; + + private static void CreateGroup() + { + long file_id = HDF5Constants.H5I_INVALID_HID; + long subgroup_id = HDF5Constants.H5I_INVALID_HID; + long group_id1 = HDF5Constants.H5I_INVALID_HID; + long group_id2 = HDF5Constants.H5I_INVALID_HID; + + // 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(); + } + } + + public static void main(String[] args) { HDF5GroupCreate.CreateGroup(); } +} |