Java多线型

import java.util.Date;
public class StartThread {
    public void startY(){
        ThreadY ty = new ThreadY();
        ty.startThreadY();
        try{
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        ty.stopThreadY();
    }
    public void startX() {
        Runnable runnX = new ThreadX();
        Thread threadX = new Thread(runnX);
        threadX.start();
    }
    public static void main(String[] args){
        StartThread test = new StartThread();
        test.startY();
        test.startX();
    }
}
class ThreadY extends Thread{
    private boolean isRunState = false;
    public void start(){
        this.isRunState = true;
        super.start();
    }
    public void run(){
        int i = 0;
        try {
            while (isRunState){
                this.setName("Thread-"+ i ++);
                System.out.println("线程Y：" + this.getName() + "正在运行");
                Thread.sleep(100);
            }
        }catch (Exception e ){
        }
        System.out.println(this.getName()+ "运行结束...");
    }
    public void setRunning(boolean isRunState){
        this.isRunState = isRunState;
    }
    public void startThreadY(){
        System.out.println("启动线程Y...");
        this.start();
    }
    public void stopThreadY(){
        System.out.println("结束线程Y。。。");
        this.setRunning(false);
    }
}
class ThreadX implements Runnable {
    private Date runnDate;
    public void run(){
        System.out.println("线程X已启动。。。");
        this.runDate = new Date();
        System.out.println("启动时间" + runDate.toLocaleString());
    }
}