50 lines
1.7 KiB
Java
50 lines
1.7 KiB
Java
/*
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* Copyright 2002 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/* @test
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* @bug 4625907
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* @summary Testing force()
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*/
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import java.io.*;
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import java.nio.*;
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import java.util.*;
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import java.nio.channels.*;
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public class Force {
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public static void main(String[] args) throws Exception {
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Random random = new Random();
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long filesize = random.nextInt(3*1024*1024);
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int cut = random.nextInt((int)filesize);
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File file = new File("Blah");
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RandomAccessFile raf = new RandomAccessFile(file, "rw");
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raf.setLength(filesize);
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FileChannel fc = raf.getChannel();
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MappedByteBuffer buf1 = fc.map(
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FileChannel.MapMode.READ_WRITE, cut, filesize-cut);
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buf1.force();
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fc.close();
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raf.close();
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}
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}
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