threadprioritydemo.java

JAVA的一些基础教程

import java.util.*;

class 优先级线程 extends Thread{
	public 优先级线程(String 线程名,int 优先级){
		super(线程名);
		setPriority(优先级);
	}
	public void run(){
		System.out.println(Thread.currentThread().getName() + "开始运行");
		int j = 0;
		Random r = new Random();
		for(int i =0; i<10000; i++){
			j = (i*r.nextInt())% 100 ; 
			if(i %2000 == 0)
				System.out.println(Thread.currentThread().getName() + ": j = " + j);
		}
		System.out.println(Thread.currentThread().getName() + "结束运行");	
	}
}

public class ThreadPriorityDemo{
	public static void main(String arg[]){
		Thread t1 = Thread.currentThread();
		if(t1.getPriority() == Thread.NORM_PRIORITY)
			System.out.println("主线程优先级:NORM_PRIORITY");

		优先级线程 t2 = new 优先级线程("高优先级线程",Thread.MAX_PRIORITY );
		优先级线程 t3 = new 优先级线程("底优先级线程",Thread.MIN_PRIORITY );
		t3.start();
		t2.start();
		t2.run();	
	}
}