Java FileLock isLocked(File file)

Description

is Locked

License

Open Source License

Declaration

public static boolean isLocked(File file) throws IOException 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.channels.FileChannel;
import java.nio.channels.FileLock;

public class Main {

    public static boolean isLocked(File file) throws IOException {
        if (!file.isFile()) {
            return false;
        }//www .jav a2 s.c  om
        try {
            RandomAccessFile raf = new RandomAccessFile(file, "rw");
            try {
                FileChannel channel = raf.getChannel();
                FileLock lock = channel.tryLock();
                if (lock == null) {
                    return true;
                }
                lock.release();
                return false;
            } finally {
                raf.close();
            }
        } catch (FileNotFoundException e) {
            return true;
        }
    }
}

Related

1. isBlocking(Channel channel)
2. isFileLocked(File file)
3. isFileLocked(File file)
4. isLocked(File file)
5. lock(File file)
6. lockFile(File file)
7. lockFile(File file, RandomAccessFile raf)