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doc/html/Tutor/examples/java/readme.html
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doc/html/Tutor/examples/java/readme.html
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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<meta name="GENERATOR" content="Mozilla/4.61 [en] (WinNT; I) [Netscape]">
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<title>readme</title>
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</head>
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<body text="#000000" bgcolor="#FFFFFF" link="#0000EE" vlink="#551A8B" alink="#FF0000">
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<h3>
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<b>HDF 5 Tutorial Examples in Java</b></h3>
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<p><br>These files are Java versions of the example programs used in the
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HDF-5 tutoral:
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<br> <a href="http://hdf.ncsa.uiuc.edu/training/hdf5/">http://hdf.ncsa.uiuc.edu/training/hdf5/</a>
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<p>The examples here correspond to the examples explained in the first
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13 sections of the tutorial.
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<br>
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<br>
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<table BORDER CELLPADDING=2 WIDTH="100%" >
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<tr>
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<td>
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<center><b>Lesson</b></center>
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</td>
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<td>
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<center><b>Topic</b></center>
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</td>
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<td>
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<center><b>C file</b></center>
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</td>
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<td>
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<center><b>Java file</b></center>
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</td>
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</tr>
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<tr>
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<td><a href="http://hdf.ncsa.uiuc.edu/training/hdf5/crtfile.html">Lesson
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4</a></td>
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<td>Create an HDF-5 file.</td>
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<td>h5_crtfile.c</td>
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<td>CreateFile.java</td>
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</tr>
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<tr>
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<td><a href="http://hdf.ncsa.uiuc.edu/training/hdf5/crtdat.html">Lesson
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5</a></td>
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<td>Create a Dataset in an HDF-5 file</td>
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<td>h5_crtdat.c</td>
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<td>CreateDataset.java</td>
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</tr>
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<tr>
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<td><a href="http://hdf.ncsa.uiuc.edu/training/hdf5/rdwt.html">Lesson 6</a></td>
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<td>Write and Read data in a dataset</td>
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<td>h5_rdwt.c</td>
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<td>DatasetRdWt.java</td>
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</tr>
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<tr>
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<td><a href="http://hdf.ncsa.uiuc.edu/training/hdf5/crtatt.html">Lesson
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7</a></td>
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<td>Create an attribute.</td>
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<td>h5_crtatt.c</td>
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<td>CreateAttribute.java</td>
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</tr>
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<tr>
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<td><a href="http://hdf.ncsa.uiuc.edu/training/hdf5/crtgrp.html">Lesson
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8</a></td>
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<td>Create a group.</td>
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<td>h5_crtgrp.c</td>
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<td>CreateGroup.java</td>
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</tr>
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<tr>
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<td><a href="http://hdf.ncsa.uiuc.edu/training/hdf5/crtgrpar.html">Lesson
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9</a></td>
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<td>Using Absolute and relative paths</td>
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<td>h5_crtgrpar.c</td>
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<td>CreateGroupAR.java</td>
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</tr>
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<tr>
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<td><a href="http://hdf.ncsa.uiuc.edu/training/hdf5/crtgrpd.html">Lesson
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10</a></td>
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<td>Create a dataset in a group.</td>
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<td>h5_crtgrpd.c</td>
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<td>CreateGroupDataset.java</td>
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</tr>
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<tr>
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<td><a href="http://hdf.ncsa.uiuc.edu/training/hdf5/compound.html">Lesson
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11</a></td>
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<td>Using Compound Datatypes</td>
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<td>h5_compound.c</td>
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<td>Compound.java</td>
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</tr>
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<tr>
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<td><a href="http://hdf.ncsa.uiuc.edu/training/hdf5/select.html">Lesson
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12</a></td>
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<td>Selection of a hyperslab.</td>
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<td>h5_hyperslab.c</td>
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<td>Hyperslab.java</td>
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</tr>
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<tr>
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<td><a href="http://hdf.ncsa.uiuc.edu/training/hdf5/selectc.html">Lesson
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13</a></td>
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<td>Selection of elements.</td>
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<td>h5_copy.c</td>
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<td>Copy.java</td>
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</tr>
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</table>
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<p>
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<hr><b>Some Explanation About Tutorial Examples</b>
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<p>The Java tutorial programs try to stay close to the corresponding C
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program. The main function's structure almost same as C program, with one
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call for each HDF5 library function. For example, where the C program has
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a call to <b>H5Fopen()</b>, the Java program has a call to <b>H5Fopen_wrap()</b>.
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<p>The wrapper functions call the HDF-5 library using the Java HDF-5 Interface
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(JHI5). The HDF-5 C interface returns error codes; these are represented
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by Java Exceptions in the JHI5. The wrapper function catches the exception
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and prints a message.
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<p>For example, the <b>H5Fopen_wrap() </b>method calls the JHI5, and catches
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any exceptions which may occur:
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<pre> <b>public static int H5Fopen_wrap (String name, int flags, int access_id)
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{
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int file_id = -1; // file identifier
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try
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{
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// Create a new file using default file properties.
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file_id = H5.H5Fopen (name, flags, access_id);
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}
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catch (HDF5Exception hdf5e)
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{
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System.out.println
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("DatasetRdWt.H5Fopen_wrap() with HDF5Exception: "
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+ hdf5e.getMessage());
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}
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catch (Exception e)
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{
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System.out.println
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("DatasetRdWt.H5Fopen_wrap() with other Exception: "
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+ e.getMessage());
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}
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return file_id;
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}</b></pre>
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<p><br>
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<hr noshade size=1><a href="http://www.ncsa.uiuc.edu/"><img SRC="http://www.ncsa.uiuc.edu/Images/NCSAhome/footerlogo.gif" ALT="NCSA" BORDER=0 ></a>
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<br><font face="arial,helvetica"><font size=-1><a href="http://www.ncsa.uiuc.edu/">The
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National Center for Supercomputing Applications</a></font></font>
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<br><font face="arial,helvetica"><font size=-1><a href="http://www.uiuc.edu/">University
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of Illinois at Urbana-Champaign</a></font></font>
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<p><font face="arial,helvetica"><font size=-1><a href="mailto:hdfhelp@ncsa.uiuc.edu">hdfhelp@ncsa.uiuc.edu</a></font></font>
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</body>
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</html>
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