java死锁小例子

 package cn.com.io.threadDemo.ThreadSyn;

 /**
  * 通过两个属性值创建死锁
  * 本程序通过两个线程各自锁定一个属性值，这样两个线程都无法结束，造成死锁
  * @author Administrator
  *
  */
 public class ThreadSyn2 implements Runnable{

  private static Object obj1=new Object();

  private static Object obj2=new Object();

  /**
   * @param args
   */
  public static void main(String[] args) {
   ThreadSyn2 ts1=new ThreadSyn2();
   ThreadSyn2 ts2=new ThreadSyn2();

   Thread t1=new Thread(ts1);//线程1
   Thread t2=new Thread(ts2);//线程2
   t1.setName("theOne");
   t2.setName("theTwo");

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

  }

  public void run() {
   String name=Thread.currentThread().getName();
   if(name.equals("theOne")){
    method1(name);
   }else{
    method2(name);
   }

  }

  //线程1的方法锁定obj1，线程2就无法完成
  private void method1(String name) {
   System.out.println(name);
   synchronized(obj1){
    try {
     Thread.sleep(1000);
    } catch (InterruptedException e) {
     e.printStackTrace();
    }
    synchronized(obj2){
     System.out.println(obj2);
    }
   }
  }

     //线程1的方法锁定obj2，线程1就无法完成
  private void method2(String name) {
   System.out.println(name);
   synchronized(obj2){
    try {
     Thread.sleep(1000);
    } catch (InterruptedException e) {
     e.printStackTrace();
    }
    synchronized(obj1){
     System.out.println(obj1);
    }
   }
  }
 }