/*
* Copyright ( c ) 2001 , 2010 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
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* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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*/
/* @test
@ bug 4462298
* @ summary Test FileChannel maps with different accesses
* @ run main / othervm Mode
*/
import java.nio.channels.*;
import java.nio.MappedByteBuffer;
import java.io.*;
public class Mode {
private static File testFile;
public static void main(String[] args) throws Exception {
testFile = File.createTempFile("testFile" , null );
testFile.deleteOnExit();
testReadable();
testWritable();
}
private static void testReadable() throws IOException {
FileInputStream is = new FileInputStream(testFile);
FileChannel channel = is.getChannel();
try {
MappedByteBuffer buff = channel.map(FileChannel.MapMode.READ_WRITE,
0 , 8 );
throw new RuntimeException("Exception expected, none thrown" );
} catch (NonWritableChannelException e) {
// correct result
}
is.close();
}
private static void testWritable() throws IOException {
FileOutputStream is = new FileOutputStream(testFile);
FileChannel channel = is.getChannel();
try {
MappedByteBuffer buff = channel.map(FileChannel.MapMode.READ_ONLY,
0 , 8 );
throw new RuntimeException("Exception expected, none thrown" );
} catch (NonReadableChannelException e) {
// correct result
}
is.close();
}
}
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