通过继承Thread类实现 多线程-

public class Hello{    public static void main(String args[]){        MyThread tr1 = new MyThread("线程1");        MyThread tr2 = new MyThread("线程2");        MyThread tr3 = new MyThread("线程3");        tr1.start();        tr2.start();        tr3.start();    }}class MyThread extends Thread{    private String name;    public MyThread(String name){        this.name = name;    }    @Override    public void run() {        for(int x=0; x<10; x++){            System.out.println(this.name+",x="+x);        }    }}

 

 通过Runnable接口实现多线程

 

public class Hello{    public static void main(String args[]){        MyThread mt1 = new MyThread("线程A");        MyThread mt2 = new MyThread("线程B");        MyThread mt3 = new MyThread("线程C");        Thread tr1 = new Thread(mt1);        Thread tr2 = new Thread(mt2);        Thread tr3 = new Thread(mt3);        tr1.start();        tr2.start();        tr3.start();    }}class MyThread extends Thread{    private String name;    public MyThread(String name){        this.name = name;    }    @Override    public void run() {        for(int x=0; x<10; x++){            System.out.println(this.name+",x="+x);        }    }}