线程初步

死锁演示案例

最新推荐文章于 2024-07-16 21:42:33 发布

原创最新推荐文章于 2024-07-16 21:42:33 发布 · 174 阅读

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package com.test;

public class DeadLock {

String s1="我是S1";
String s2="我是S2";
int n = 1;
public void write(){
    synchronized (s1) {
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        synchronized (s2) {
            s1 = "修改s1----"+n+"次";
            System.out.println(s1);
        }
    }
    n++;
}

public void read(){
    synchronized (s2) {
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        synchronized (s1) {
            s2 = "修改s2---"+n+"次";
            System.out.println(s2);
        }
    }
    n++;
}

}
package com.test;

public class MyDeadLock implements Runnable{

private DeadLock dl;

public MyDeadLock(DeadLock dl){
    this.dl = dl;
}


@Override
public void run() {
    for (int i = 0; i <10; i++) {
        dl.read();
        dl.write();
    }


}

}

package com.test;

public class TestDead {

public static void main(String[] args) {
    DeadLock dd = new DeadLock();
    MyDeadLock md = new MyDeadLock(dd);
    new Thread(md).start();
    new Thread(md).start();
}

}