死锁的示例

package day12;

/*
同步锁的示例
 */
class Test implements Runnable{
    private boolean flag;

    Test(boolean flag){
        this.flag = flag;
    }

    public void run(){
        if (flag){
            while (true){
                synchronized (MyLock.locka){
                    System.out.println("if      locka....");
                    synchronized (MyLock.lockb){
                        System.out.println("if      locka....");
                    }
                }
            }
        }else {
            while (true){
                synchronized (MyLock.lockb){
                    System.out.println("else       lockb");
                    synchronized (MyLock.locka){
                        System.out.println("else       locka");
                    }
                }
            }
        }
    }
}

class MyLock{
    public static  final Object locka = new Object();
    public static final Object lockb = new Object();
}

public class DeadLockTest {
    public static void main(String[] args) {
        Test a = new Test(true);
        Test b = new Test(false);

        Thread t1 = new Thread(a);
        Thread t2 = new Thread(b);

        t1.start();
        t2.start();
    }
}