用java码出的动态烟花特效

编程语言：java
工具：Apahe NetBeans
实验系统：windows10
flower.java整个代码如下：
/*

*/
package folder;

import java.awt.;
import java.awt.event.;

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

/**
*

• @author 14678
  */
  public class flower extends Frame{
  //背景
  int b1x[]={0,500,500,0};
  int b1y[]={0,0,500,500};
  Thread thread ;
  int count=8;//烟花个数 8
  flower() {

  setLayout(new FlowLayout());
  setTitle(“烟花特效”);
  setSize(500, 500);
  setVisible(true);

  }
  public void paint(Graphics g) {
  g.setColor(Color.BLACK); // 描画颜色
  g.fillPolygon(b1x, b1y, 4); // 描画

    while(true){
      g.setColor(Color.BLACK);                   // 描画颜色
     g.fillPolygon(b1x, b1y, 4);              // 描画
     int flowerx=(int) (Math.random() * 500);//烟花x坐标
     int flowery=100+(int) (Math.random() * 300); //烟花最终y坐标
     int movey=500;//烟花弹移动变量
     while(movey>=flowery)//当
     { g.setColor(Color.BLACK);                   // 描画颜色
     g.fillPolygon(b1x, b1y, 4);              // 描画
     g.setColor(Color.WHITE);                   // 烟花弹颜色白色
     g.fillOval(flowerx,movey,1200/flowery ,1200/flowery);//烟花弹大小
       try { 
                    Thread.sleep(10);//延时
                  
               } catch (InterruptedException e) {  
                   e.printStackTrace();  
               } 
    //用黑色抹去烟花弹踪迹
     g.setColor(Color.BLACK);                   // 画画颜色
     g.fillOval(flowerx,movey+1200/flowery,1200/flowery ,1200/flowery);
     
     movey-=1200/flowery;//向上移动幅度
     }
     g.setColor(Color.WHITE);                   // 烟花弹颜色白色
     g.fillOval(flowerx,flowery,1600/flowery,1600/flowery);//烟花弹大小
      try { 
                    Thread.sleep(30);//延时
                  
               } catch (InterruptedException e) {  
                   e.printStackTrace();  
               }  
     //抹去烟花弹
        g.setColor(Color.BLACK);                   // 描画颜色
     g.fillPolygon(b1x, b1y, 4);              // 描画
    //烟花炸出以烟花弹终点坐标为圆心的40个小烟花
    for(int i=0;i<10;i++){//
     
      int r=3+(int) (Math.random() * 400/flowery);//花骨朵半径
          
     //右下象限
      Color c1 = new Color((int) (Math.random() * 255),(int) (Math.random() * 255),(int) (Math.random() * 255));//花骨朵颜色 
     g.setColor(c1); 
     g.fillOval(flowerx+(int) (Math.random() * r*50),flowery+(int) (Math.random() * r*50),r , r);
       
      //左上象限
    Color c2 = new Color((int) (Math.random() * 255),(int) (Math.random() * 255),(int) (Math.random() * 255));//花骨朵颜色 
     g.setColor(c2);
     g.fillOval(flowerx-(int) (Math.random() * r*50),flowery-(int) (Math.random() * r*50),r , r);
      //左下象限
       Color c3 = new Color((int) (Math.random() * 255),(int) (Math.random() * 255),(int) (Math.random() * 255));//花骨朵颜色 
     g.setColor(c3);
     g.fillOval(flowerx-(int) (Math.random() * r*50),flowery+(int) (Math.random() * r*50),r , r);
      //右上象限
       Color c4 = new Color((int) (Math.random() * 255),(int) (Math.random()  * 255),(int) (Math.random() * 255));//花骨朵颜色 
     g.setColor(c4);
     g.fillOval(flowerx+(int) (Math.random()  * r*50),flowery-(int) (Math.random()  * r*50),r , r);
      }
    try { 
                    Thread.sleep(100);//延时
                  
               } catch (InterruptedException e) {  
                   e.printStackTrace();  
               }  
    
    count--;//烟花减1
    if(count<=0)break;//放完退出循环
    }
     System.exit(0); //退出窗体
  

  }

  class WinAdapter extends WindowAdapter {
  public void windowClosing(WindowEvent we) {
  System.exit(0);
  }
  }

public static void main(String[] args) {
flower f = new flower();
}
}