关于Java线程优先级解决办法

class ThreadUse implements Runnable{    public String name="";    public ThreadUse(String str)    {        this.name=str;    }    public void run()    {        System.out.println("ThreadUse1 is running...");        for(int i=0;i<10;i++)        {            System.out.println(name+":"+i);        }        System.out.println(name+":I am the end!");    }}class ThreadUse2 extends Thread{    private String name = "";    public ThreadUse2(String str){        name= str;    }    public void run(){        System.out.println("ThreadUse2 is running...");        for(int i=0;i<10;i++)        {            System.out.println(name+":"+i);        }        System.out.println(name+":I am the end!");    }}public class Contest {    public static void main(String args[])    {        //Runnable接口类的对象创建线程        Thread number1 = new Thread(new ThreadUse("number1"));        //Thread类的子类创建线程        ThreadUse2 number2 = new ThreadUse2("number2");        number1.setPriority(4);        number2.setPriority(4);        number1.start();        number2.start();            }}