Java アプリケーションのインスタンスが一度に 1 つだけ実行されるようにするにはどうすればよいですか?

private static boolean lockInstance(final String lockFile) {
    try {
        final File file = new File(lockFile);
        final RandomAccessFile randomAccessFile = new RandomAccessFile(file, "rw");
        final FileLock fileLock = randomAccessFile.getChannel().tryLock();
        if (fileLock != null) {
            Runtime.getRuntime().addShutdownHook(new Thread() {
                public void run() {
                    try {
                        fileLock.release();
                        randomAccessFile.close();
                        file.delete();
                    } catch (Exception e) {
                        // Handle exception appropriately
                    }
                }
            });
            return true;
        }
    } catch (Exception e) {
        // Handle exception appropriately
    }
    return false;
}