一个美丽的java烟花程序

<img src="http://img.blog.csdn.net/20150625104525974?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvdTAxMzkxMDM1Nw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />

import java.awt.*;
import java.applet.*;
import java.awt.event.*;
import javax.swing.*;
public class ChatApplet extends Applet implements MouseListener,Runnable
{ int x,y;  int top,point;
/***对小程序进行变量和颜色的初始化。

*/
public void init()  {    x = 0;    y = 0;
//设置背景色为黑色
setBackground(Color.black);
addMouseListener(this);
} public void paint(Graphics g)  {    }
/** *使该程序能够作为应用程序执行。 */
public static void main(String args[])
{    ChatApplet applet = new ChatApplet();
JFrame frame = new JFrame("TextAreaNew");
frame.addWindowListener(new WindowAdapter()
{
	public void windowClosing(WindowEvent e){
		System.exit(0);
	}    });
frame.getContentPane().add(      applet, BorderLayout.CENTER);
frame.setSize(800,400);
applet.init();
applet.start();
frame.setVisible(true);
}  /***程序主线程。对一个烟花进行绘制。

*/
public void run()
{
	//变量初始化
	Graphics g1;
	g1 = getGraphics();
	int y_move,y_click,x_click;
	int v;
	x_click = x;
	y_click = y;
	y_move = 400;
	v = 3;  int r,g,b;
	while(y_move > y_click)
	{
		g1.setColor(Color.black);
		g1.fillOval(x_click,y_move,5,5);
		y_move -= 5;
		r = (((int)Math.round(Math.random()*4321))%200)+55;
		g = (((int)Math.round(Math.random()*4321))%200)+55;
		b = (((int)Math.round(Math.random()*4321))%200)+55;
		g1.setColor(new Color(r,g,b));
		g1.fillOval(x_click,y_move,5,5);
		for(int j = 0 ;j<=10;j++)
		{
			if(r>55) r -= 20;
			if(g>55) g -= 20;
			if(b>55) b -=20;
			g1.setColor(new Color(r,g,b));
			g1.fillOval(x_click,y_move+j*5,5,5);
		}
		g1.setColor(Color.black);
		g1.fillOval(x_click,y_move+5*10,5,5);
		try     {        Thread.currentThread().sleep(v++);
		}
		catch (InterruptedException e) {}
	}
	for(int j=12;j>=0;j--)
	{
		g1.setColor(Color.black);
		g1.fillOval(x_click,y_move+(j*5),5,5);
		try     {
			Thread.currentThread().sleep((v++)/3);
		}
		catch (InterruptedException e) {}  }
	y_move = 400;  g1.setColor(Color.black);
	while(y_move > y_click)
	{     g1.fillOval(x_click-2,y_move,9,5);
	y_move -= 5;
	}    v = 15;
	for(int i=0;i<=25;i++)  {   r = (((int)Math.round(Math.random()*4321))%200)+55;
	g = (((int)Math.round(Math.random()*4321))%200)+55;
	b = (((int)Math.round(Math.random()*4321))%200)+55;
	g1.setColor(new Color(r,g,b));
	g1.drawOval(x_click-3*i,y_click-3*i,6*i,6*i);
	if(i<23)
	{    g1.drawOval(x_click-3*(i+1),y_click-3*(i+1),6*(i+1),6*(i+1));
	g1.drawOval(x_click-3*(i+2),y_click-3*(i+2),6*(i+2),6*(i+2));
	}
	try
	{        Thread.currentThread().sleep(v++);
	} catch (InterruptedException e) {}
	g1.setColor(Color.black);
	g1.drawOval(x_click-3*i,y_click-3*i,6*i,6*i);
	}}
/***对鼠标事件进行监听。

*临听其鼠标按下事件。

*当按下鼠标时，产生一个新线程。*/
public void mousePressed(MouseEvent e)
{
	x = e.getX();
	y = e.getY();
	Thread one;
	one = new Thread(this);
	one.start();   one = null;
}
/**   *实现MouseListener接中的方法。为一个空方法。

*/
public void mouseReleased(MouseEvent e)  {  

}
/**  *实现MouseListener接中的方法。

为一个空方法。  */
public void mouseEntered(MouseEvent e)  {  }
/**   *实现MouseListener接中的方法。为一个空方法。

*/
public void mouseExited(MouseEvent e)  {  }
/**   *实现MouseListener接中的方法。为一个空方法。  */
public void mouseClicked(MouseEvent e)  {  } 

}