Java多线程死锁示例

本文实例演示了java多线程死锁。分享给大家供大家参考，具体如下：

package com.damlab.fz;
public class deadlock {
  public static void main(string[] args) {
    resource r1 = new resource();
    resource r2 = new resource();
    // 每个线程都拥有r1,r2两个对象
    thread myth1 = new mythread1(r1, r2);
    thread myth2 = new mythread2(r1, r2);
    myth1.start();
    myth2.start();
  }
}
class resource {
  private int i;
}
class mythread1 extends thread {
  private resource r1, r2;
  public mythread1(resource r1, resource r2) {
    this.r1 = r1;
    this.r2 = r2;
  }
  @override
  public void run() {
    while (true) {
      // 先获得r1的锁，再获得r2的锁
      synchronized (r1) {
        system.out.println("1号线程获取了r1的锁");
        synchronized (r2) {
          system.out.println("1号线程获取了r2的锁");
        }
      }
    }
  }
}
class mythread2 extends thread {
  private resource r1, r2;
  public mythread2(resource r1, resource r2) {
    this.r1 = r1;
    this.r2 = r2;
  }
  @override
  public void run() {
    while (true) {
      // 先获得r2的锁，再获得r1的锁
      synchronized (r2) {
        system.out.println("2号线程获取了r2的锁");
        synchronized (r1) {
          system.out.println("2号线程获取了r1的锁");
        }
      }
    }
  }
}

运行结果：

希望本文所述对大家java程序设计有所帮助。

原文链接：https://blog.csdn.net/u013063153/article/details/49888821