// : c12:filelocking.java
// {clean: file.txt}
// from 'thinking in java, 3rd ed.' (c) bruce eckel 2002
// www.bruceeckel.com. see copyright notice in copyright.txt.
import java.io.fileoutputstream;
import java.nio.channels.filelock;
public class filelocking {
public static void main(string[] args) throws exception {
fileoutputstream fos = new fileoutputstream("file.txt");
filelock fl = fos.getchannel().trylock();
if (fl != null) {
system.out.println("locked file");
thread.sleep(100);
fl.release();
system.out.println("released lock");
}
fos.close();
}
} ///:~
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