练习题之死锁

public class PrintMain {public static String obj1="obj1";public static String obj2="obj2";public static void main(String[] args) {new Thread(new Runnable() {public void run() {System.out.println(new Date().toString + "LockA开始执行");while(true) {synchronized(obj1) {System.out.println(new Date().toString + "LockA锁住obj1");Thread.sleep(3000);synchronized(obj2) {System.out.println(new Date().toString + "LockA锁住obj2");Thread.sleep(60*1000);}}}}   },"LockA").start();new Thread(new Runnable() {public void run() {System.out.println(new Date().toString + "LockB开始执行");while(true) {synchronized(obj2) {System.out.println(new Date().toString + "LockB锁住obj2");Thread.sleep(3000);synchronized(obj1) {System.out.println(new Date().toString + "LockB锁住obj1");Thread.sleep(60*1000);}}}}   },"LockB").start();}
}