Here you can find the source of getAudioLock()
public static ReentrantLock getAudioLock()
//package com.java2s; //License from project: Open Source License import java.util.concurrent.locks.ReentrantLock; public class Main { private static ReentrantLock audioLock = new ReentrantLock(); public static ReentrantLock getAudioLock() { return audioLock; }//ww w. ja v a 2s. c o m }