java 多线程学习（一）

public class ThreadA extends Thread {
    private static int threadID = 0;

    public ThreadA() {
        super("ThreadID:" + (++threadID));
    }

    public void run() {
        try {
            System.out.println(getName() + " 线程运行开始!");
            for (int i = 0; i < 10; i++) {
                System.out.println(this.getName() + " is " + i);

                Thread.sleep(1);//这里要sleep，不然看不出多线程的效果
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

public class MyTest {

    public static void main(String[] args){
        ThreadA t1=new ThreadA();
        ThreadA t2=new ThreadA();
        t1.start();
        t2.start();
    }
}

输入结果：

ThreadID:1 线程运行开始!
ThreadID:1 is 0
ThreadID:2 线程运行开始!
ThreadID:2 is 0
ThreadID:1 is 1
ThreadID:2 is 1
ThreadID:1 is 2
ThreadID:2 is 2
ThreadID:1 is 3
ThreadID:2 is 3
ThreadID:1 is 4
ThreadID:2 is 4
ThreadID:1 is 5
ThreadID:2 is 5
ThreadID:1 is 6
ThreadID:2 is 6
ThreadID:1 is 7
ThreadID:2 is 7
ThreadID:1 is 8
ThreadID:2 is 8
ThreadID:1 is 9
ThreadID:2 is 9