Java多线程-thread&Runnable的关系

MyThread.class
package com.test.interview;

public class MyThread extends Thread {
    private String name;

    public MyThread(String name) {
        this.name = name;
    }

    @Override
    public void run() {
        for (int i = 0; i < 10; i++) {
            System.out.println("thread start:" + this.name + ",i=" + i);
        }
    }
}

ThreadDemo.class
package com.test.interview;

public class ThreadDemo {
    public static void main(String[] args) {
        MyThread mt = new MyThread("thread1");
        MyThread mt2 = new MyThread("thread2");
        MyThread mt3 = new MyThread("thread3");
        mt.start();
        mt2.start();
        mt3.start();
    }
}

RunnableDemo.class
package com.test.interview;

public class RunnableDemo {
    public static void main(String[] args) {
        MyRunnable mr1 = new MyRunnable("Runnable1");
        MyRunnable mr2 = new MyRunnable("Runnable2");
        MyRunnable mr3 = new MyRunnable("Runnable3");
        Thread t1 = new Thread(mr1);
        Thread t2 = new Thread(mr2);
        Thread t3 = new Thread(mr3);
        t1.start();
        t2.start();
        t3.start();
    }
}

MyRunnable.class
package com.test.interview;

public class MyRunnable implements Runnable {
    private String name;

    public MyRunnable(String name) {
        this.name = name;
    }
    @Override
    public void run() {
        for (int i = 0; i < 10; i++) {
            System.out.println("thread start:" + this.name + ",i=" + i);
        }
    }
}