Java多线程之死锁

一个线程锁定A，等着B，一个线程锁定B，等着A

过多的同步方法会导致死锁

package Tread;

public class Demo02 {
	public static void main(String[] args) {
		Object g = new Object();
		Object m = new Object();
		Test t1 = new Test(g, m);
		Test t2 = new Test(g, m);
		new Thread(t1).start();
		new Thread(t2).start();
	}
}
	class Test implements  Runnable {
	Object goods;
	Object money;
		public void run() {
			while(true) {
				test();
			}
		}
		public void test() {
			synchronized (goods) {
			try {
				Thread.sleep(500);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
			synchronized (money) {
				
			}
		}
		System.out.println("一手给钱");
		}

	public Test(Object goods, Object money) {
		super();
		this.goods = goods;
		this.money = money;
	}

	}

class Test2 implements Runnable {
	Object goods;
	Object money;

	public void run() {
		while (true) {
			test();
		}
	}

	public void test() {
		synchronized (money) {
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
			synchronized (goods) {

			}
		}
		System.out.println("一手给货");
	}

	public Test2(Object goods, Object money) {
		super();
		this.goods = goods;
		this.money = money;
	}

}