/*
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* 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
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*
* 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 4434115 4802789
* @ summary Check for regressions in FileChannel . force
*/
import java.io.*;
import java.nio.*;
import java.nio.channels.*;
public class Force {
public static void main(String[] args) throws Exception {
writeAfterForce();
forceReadableOnly();
}
// 4434115: FileChannel.write() fails when preceded by force() operation
private static void writeAfterForce() throws Exception {
byte [] srcData = new byte [20 ];
File blah = File.createTempFile("blah" , null );
blah.deleteOnExit();
FileOutputStream fis = new FileOutputStream(blah);
FileChannel fc = fis.getChannel();
fc.write(ByteBuffer.wrap(srcData));
fc.force(false );
fc.write(ByteBuffer.wrap(srcData));
fc.close();
}
// 4802789: FileChannel.force(true) throws IOException (windows)
private static void forceReadableOnly() throws Exception {
File f = File.createTempFile("blah" , null );
f.deleteOnExit();
FileInputStream fis = new FileInputStream(f);
FileChannel fc = fis.getChannel();
fc.force(true );
fc.close();
fis.close();
}
}
Messung V0.5 in Prozent C=94 H=77 G=85
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-10-11)
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