文件锁

// : 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();

}

} ///:~