相关疑难解决方法(0)

从我在Java中使用线程的时间开始,我发现了这两种编写线程的方法:

用implements Runnable:

public class MyRunnable implements Runnable {
    public void run() {
        //Code
    }
}
//Started with a "new Thread(new MyRunnable()).start()" call

或者,用extends Thread:

public class MyThread extends Thread {
    public MyThread() {
        super("MyThread");
    }
    public void run() {
        //Code
    }
}
//Started with a "new MyThread().start()" call

这两个代码块有什么显着差异吗？

当我学习如何使用wait和notify时,我得到一个奇怪的东西,下面两部分代码是相似的,但是它们的结果是如此不同,为什么呢？

class ThreadT implements Runnable{



public void run()
  {
    synchronized (this) {

        System.out.println("thead:"+Thread.currentThread().getName()+" is over!");

    }

   }
}

public class TestWait1 {


public static void main(String[] args) {

    Thread A = new Thread(new ThreadT(),"A");
     A.start();
    synchronized (A) {

        try {
            A.wait();
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }
    System.out.println(Thread.currentThread().getName()+" is over");

}

}

结果:
thead:A结束了!
主要结束了

class ThreadD implements Runnable{

Object o  ;

public ThreadD(Object o)
{
    this.o = o;
}

public void run() …