Java多线程（一） Thread和 Runnable

http://www.cnblogs.com/lwbqqyumidi/p/3804883.html

1.继承Thread

2.实现Runnable接口

public class MyRunnable implements Runnable {

    @Override
    public void run() {
        // TODO Auto-generated method stub
      System.out.println("running..");
    }

}

public class Run {
    public static void main(String[] args) {
        Runnable runnable =new MyRunnable();
        Thread thread = new Thread(runnable);
        thread.start();
    }

}

如果同时继承Thread类实现Runnable接口,实际执行的Thread的run方法

public class ThreadTest {

    public static void main(String[] args) {
        for (int i = 0; i < 100; i++) {
            System.out.println(Thread.currentThread().getName() + " " + i);
            if (i == 30) {
                Runnable myRunnable = new MyRunnable();
                Thread thread = new MyThread(myRunnable);
                thread.start();
            }
        }
    }
}

class MyRunnable implements Runnable {
    private int i = 0;

    @Override
    public void run() {
        System.out.println("in MyRunnable run");
        for (i = 0; i < 100; i++) {
            System.out.println(Thread.currentThread().getName() + " " + i);
        }
    }
}

class MyThread extends Thread {

    private int i = 0;

    public MyThread(Runnable runnable){
        super(runnable);
    }

    @Override
    public void run() {
        System.out.println("in MyThread run");
        for (i = 0; i < 100; i++) {
            System.out.println(Thread.currentThread().getName() + " " + i);
        }
    }
}