import java.awt.*;
import java.applet.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.*;
import java.lang.Integer;
/*障碍1
*子弹2
*小车3
*定义三个向量存储下落的字符
*/
public class tanqiu extends JApplet implements Runnable,KeyListener
{
本文转自 dog250 51CTO博客，原文链接:http://blog.51cto.com/dog250/1273983
