java面试题—-用java代码写死锁

线程join写法

public class Test2 {
	//join写线程死锁
	//join 等待该线程终止，即把对象所在当前的线程停止
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		//创建线程myth1并赋相应的值
		MyThread myth1=new MyThread();
			myth1.paraC='5';
			myth1.star='0';
			myth1.random=10;
		//创建线程myth2并赋相应的值
		MyThread myth2=new MyThread();
			myth2.paraC='f';
			myth2.star='a';
			myth2.random=26;
		//myth2的线程引用指向线程myth1，myth1的线程引用指向线程myth2
		//为死锁创建条件
		myth1.t=myth2;
		myth2.t=myth1;
			myth1.start();
			myth2.start();	
	}
}
//MyThread类继承Thread并实现run方法

 class MyThread extends Thread{
	 char paraC,star;
	 int random;
	 Thread t;
	 public void run(){
		 for (int i = 0; i < 200; i++) {
			 char c=(char)((int)(Math.random()*random)+star);
			 System.out.println(c);
			 if(c==paraC){
				 try {
					//这里注意不要用this，this并不代表本线程，代表虚拟机
					//start方法为使该线程开始执行；Java 虚拟机调用该线程的 run 方法
					t.join();
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			 }
		}
		
	 }
 }