www.pudn.com > Firework.rar > Fireworks.java

import java.awt.*; 
import java.applet.*; 
import java.awt.event.*; 
import javax.swing.*; 
 
public class Fireworks 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)  
	{	 
		 
	} 
	 
	/** 
	*使该程序可以作为应用程序运行。 
	*/ 
	public static void main(String args[]) { 
    Fireworks applet = new Fireworks(); 
    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) 
  { 
  } 
	 
}