Lock a file and change last modified

FileLocker.java

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.Date;


/**
 * @author fredrik Persson
 */
public class FileLocker {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		System.out.print("Locking a file...");
		Date now = new Date();
		File file = new File("myfile");
		try{
			FileChannel channel = new RandomAccessFile(file, "rw").getChannel();
			FileLock lock = channel.lock();			
			if(!file.exists()){
				file.createNewFile();
				System.out.print("Createing file");
			}else{
				System.out.print("modify file");
				file.setLastModified(now.getTime());
			}
			lock.release();
			channel.close();
		}catch(Exception e){
			System.out.print(e.getMessage());
		}
		
		try {
			Thread.sleep(5000);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		System.out.print("\nCurrent unixtime is: "+Long.toString(now.getTime()));
		System.out.print("\nFile last modified:" +Long.toString(file.lastModified()));
	}

}