Java Thread 的简单应用

在窗口中有两个不同颜色的方块，向右以不同速度移动
这里只使用一个线程达到两个方块都移动的目的，在第一方块的纵坐标赋值的时候，采用了随机赋值的random，并不影响程序。

package chapter12;

import java.awt.Color;
import java.util.Random;

import javax.swing.Jframe;
import javax.swing.JPanel;

class Raceframe extends Jframe {
	private JPanel tortoise;
	private JPanel rabbit;
	
	public Raceframe() {
		tortoise = new JPanel();
		tortoise.setBounds(0, 50, 30, 30);
		tortoise.setBackground(Color.GREEN);
		add(tortoise);
		
		rabbit = new JPanel();
		rabbit.setBounds(0, 100, 30, 30);
		rabbit.setBackground(Color.RED);
		add(rabbit);
		
		setTitle("Race frame");
		setSize(600, 500);
		setLocationRelativeTo(null);
		setLayout(null);
		setDefaultCloseOperation(Jframe.EXIT_ON_CLOSE);
		setVisible(true);
		
		new TortoiseThread().start();
		new RabbitThread().start();
	}
	
	private class TortoiseThread extends Thread {
		Random random = new Random();
		
		@Override
		public void run() {
			while(true) {
				if(getContentPane().getBounds().contains(getLocation())){
					// 随机产生一个值
					int step = random.nextInt(100);
					tortoise.setLocation(tortoise.getX() + 10, step);
				} else {
					break;
				}
				try {
					sleep(1000);
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
	}
	
	private class RabbitThread extends Thread {
		@Override
		public void run() {
			while(true) {
				rabbit.setLocation(rabbit.getX() + 20, rabbit.getY());
				try {
					sleep(1000);
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
	}
	
}

public class ThreadTestDemo {

	public static void main(String[] args) {
		
		Raceframe raceframe = new Raceframe();

	}

}