class Do3

{

    public static void main(String[] args)

    {

        XC d1=new XC("小王");

        XC d2=new XC("xiaoli");

        d1.start();//启动线程，调用run()方法

        d2.start();

        System.out.println("Hello World!");

    }

}

class XC extends Thread//继承线程

{

    private String name;

    XC(String name)

    {

    this.name=name;

    }

    public void run()//重写run()方法

    {

    for(int x=0;x<10;x++)

        {

for(int y=-999999;y<999999;y++){}

System.out.println(name+"....="+x);

        }

    }

}

class Do6

{

    public static void main(String[] args)

    {

        Yunxing yx1=new Yunxing("效力");

        Yunxing yx2=new Yunxing("dddd");

        Thread d1=new Thread(yx1);

        Thread d2=new Thread(yx2);

        d1.start();

        d2.start();

    }

}

class Yunxing implements Runnable//此处用接口形式的线程 ，可以继承父类

{

    private String name;

    Yunxing(String name)

    {

    this.name=name;

    }

    public void run()

    {

        for (int x=0;x<10 ;x++ )

        {

            for(int y=-999999;y<999999;y++)

            {

            }System.out.println(name+".."+x);

        }

    }

}