package java.lang;

//Runnable接口源码只有一个run方法

public interface Runnable {

    public abstract void run();

}

public class RunnableThread1 implements Runnable {

    @Override

    public void run() {

        for (int i = 0; i < 5; i++) {

            System.out.println(Thread.currentThread().getName() + ":线程启动....");

            try {

                Thread.sleep(1000);

            } catch (InterruptedException e) {

                e.printStackTrace();

            }

        }

    }

}

public class RunnableThread2 implements Runnable {

    @Override

    public void run() {

        for (int i = 0; i < 5; i++) {

            System.out.println(Thread.currentThread().getName() + ":线程启动....");

            try {

                Thread.sleep(2000);

            } catch (InterruptedException e) {

                e.printStackTrace();

            }

        }

    }

}

public class TestThread {

    public static void main(String[] args) {

        RunnableThread1 thread1 = new RunnableThread1();

        RunnableThread2 thread2 = new RunnableThread2();

        Thread t1 = new Thread(thread1, "线程1");

        Thread t2 = new Thread(thread2);// 线程2为系统命名

        // 不能再此处调用sleep()方法

        t1.start();

        t2.start();

    }

}

结果：

Thread-0:线程启动....

线程1:线程启动....

线程1:线程启动....

Thread-0:线程启动....

线程1:线程启动....

线程1:线程启动....

Thread-0:线程启动....

线程1:线程启动....

Thread-0:线程启动....

Thread-0:线程启动....