LockExample.java

package com.godoro.nio.channel;

import java.io.File;
import java.io.RandomAccessFile;
import java.nio.channels.FileChannel;
import java.nio.channels.FileLock;
import java.nio.channels.OverlappingFileLockException;
import java.util.concurrent.TimeUnit;

public class LockExample {

  public static void main(String[] args) throws Exception {
    File file = new File("shared.txt");

    RandomAccessFile raf
            = new RandomAccessFile(file, "rw");
    FileChannel channel = raf.getChannel();

    FileLock lock = null;
    try {
      lock = channel.lock();
      lock = channel.tryLock();
      System.out.println("Dosya kilitlendi.");
      Thread.sleep(10000);

    } catch (OverlappingFileLockException e) {
      e.printStackTrace();
      System.out.println("Çakışan dosya kilitleme yanlışlığı: " + e.getMessage());
    }
    if (lock != null) {
      lock.release();
      System.out.println("Dosya salındı.");
    }

    channel.close();
  }
}