黑马程序员_经典死锁_学习笔记

class Test implements Runnable{
	private boolean flag;
	Test(boolean flag){
		this.flag=flag;
	}
	public void run(){//实现Runnable接口，复写run方法
		if(flag){
			synchronized(Mylock.locka) {
				System.out.println("if locka");
				synchronized(Mylock.lockb){
					System.out.println("if lockb");
				}
			}
		}
		else{
			synchronized(Mylock.lockb) {
				System.out.println("else lockb");
				synchronized(Mylock.locka){
					System.out.println("else locka");
				}
			}
		}
	}
}
//定义锁
class Mylock{
	static Object locka=new Object();
	static Object lockb=new Object();
}
public class DeadLockDemo {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Thread t1=new Thread(new Test(true));
		Thread t2=new Thread(new Test(false));
		t1.start();
		t2.start();
	}

}

在职场面试中，有好多面试题要求写出一个死锁，上面的这个是经典的死锁，在面试中很可能就能够帮助到你！

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