class TestThread extends Thread{
　　public void run(){
　　　　for(int i=0;i<10;i++){
　　　　　　System.out.println(Thread.currentThread().getName()+"---is running");
　　　　}
　　}
}
public class Thread01 {
　　public static void main(String[] args) {
　　　　TestThread tt1 = new TestThread();
　　　　TestThread tt2 = new TestThread();
　　　　tt1.start();
　　　　tt2.start();
　　　　new Thread(new Runnable() {
　　　　　　　　　　@Override
　　　　　　　　public void run() {
　　　　　　　　　　for(int i=0;i<20;i++){
　　　　　　　　　　　　System.out.println(Thread.currentThread().getName()+"----is running");
　　　　　　　　　　}
　　　　　　}
　　　　}).start();
　　}
}

运行结果：

Thread-1---is running
Thread-2----is running
Thread-0---is running
Thread-2----is running
Thread-1---is running
Thread-2----is running
Thread-0---is running
Thread-2----is running
Thread-1---is running
Thread-2----is running
Thread-2----is running
Thread-0---is running
Thread-2----is running
Thread-1---is running
Thread-2----is running
Thread-0---is running
Thread-2----is running
Thread-1---is running
Thread-2----is running
Thread-0---is running
Thread-2----is running
Thread-1---is running
Thread-2----is running
Thread-0---is running
Thread-2----is running
Thread-1---is running
Thread-2----is running
Thread-0---is running
Thread-2----is running
Thread-1---is running
Thread-2----is running
Thread-0---is running
Thread-2----is running
Thread-1---is running
Thread-2----is running
Thread-0---is running
Thread-2----is running
Thread-1---is running
Thread-2----is running
Thread-0---is running

Thread和Runnable