java写一个死锁

分手后的思念是犯贱 2022-08-13 12:37 242阅读 0赞

package thread.deadlock;
/**
 * 一个死锁
 * @author zzh
 *
 */
public class DeadLock {
    public static void main(String[] args) {
        Test test = new Test(true);
        Test test_2 = new Test(false);
        Thread t1 = new Thread(test);
        Thread t2 = new Thread(test_2);
        t1.start();
        t2.start();
    }
}
class MyLock{
    public static final Object locka = new Object(); 
    public static final Object lockb = new Object(); 
}
class Test implements Runnable{
    private boolean flag;
    Test(boolean flag){
        this.flag = flag;
    }
    @Override
    public void run() {
        if(flag){
            while (true) {
                synchronized (MyLock.locka) {
                    System.out.println("if......locka...");
                    synchronized (MyLock.lockb) {
                        System.out.println("if......lockb...");
                    }
                }
            }
        }else{
            while (true) {
                synchronized (MyLock.lockb) {
                    System.out.println("else......lockb...");
                    synchronized (MyLock.locka) {
                        System.out.println("else......locka...");
                    }
                }
            }
        }
    }
}