multithreaddemo2.java

Java程序设计大学教程程序源代码

/*
 * MultiThreadDemo2.java
 * 参见教程284页 示例程序10-2
 * Created on 2005年8月14日, 下午5:18
 */

package jbookch10;

public class MultiThreadDemo2 {
    public static void main(String args[]){
        //运行子线程
        Thread t1,t2,t3,t4;
        t1=new Thread(new NewSleepThread("1"));
        t1.start();//启动线程1
        t2=new Thread(new NewSleepThread("2"));
        t2.start();//启动线程2
        t3=new Thread(new NewSleepThread("3"));
        t3.start();//启动线程3
        t4=new Thread(new NewSleepThread("4"));
        t4.start();//启动线程4
        //运行主线程
        System.out.print(" 主线程启动! ");
        try {
            for (int i=0;i<100; i++) {
                System.out.print("  -->  ");
                Thread.sleep(20);
            }
        } catch (InterruptedException e) {
            System.out.print(" 主线程中断！ ");
        }
        System.out.print(" 主线程结束！ ");
    }
}

class NewSleepThread implements Runnable {
    NewSleepThread(String threadName) {
        name=threadName;
        System.out.print(" 新线程"+name+"启动! ");
    }
    
    //线程入口
    public void run() {
        try {
            for (int i=0;i<100; i++) {
                System.out.print(name);
                Thread.sleep(20);
            }
        } catch (InterruptedException e) {
            System.out.print(" 线程"+name+"中断！ ");
        }
        System.out.print(" 线程"+name+"结束！ ");
    }
    
    private String name;
    
}