锁类算法题记录

死锁

public class DeadLockTest{
	private static Object left=new Object();
	private static Object right=new Object();
	public static void leftRight(){
		synchronized(left){
			System.out.println("leftRight:left lock,threadId:"+Thread.currentThread().getId());
			sleep(100);
			synchronized(right){
			 		System.out.println("leftRight:right lock,threadId:"+Thread.currentThread().getId());
			 }
		}
	}

	public static void RightLeft(){
		synchronized(right){
			System.out.println("rightLeft:right lock,threadId:"+Thread.currentThread().getId());
			sleep(100);
			synchronized(left){
			 		System.out.println("rightLeft:left lock,threadId:"+Thread.currentThread().getId());
			 }
		}
	}

	private static void sleep(long time){
		try{
			Thread.sleep(time);
		}catch(InterruptedException e){
			e.printStackTrace();
		}
	}

	public static void main(String[] args){
		ExecutorService executorService=Executors.newFixedThreadPool(10);
		Runnable command1=new Runnable(){
			@Override
			public void run(){leftRight();}
		};
		Runnable command2=new Runnable(){
			@Override
			public void run(){rightLeft();}
		};
		executorService.execute(command1);
		executorService.execute(command2);
		executorService.shutdown();
	}
}