/* 通讯录管理系统 Java设计 源程序 */ public class BackgroundPanel extends JPanel /* * 重写paintComponent方法 */ public class DAO { private static DAO dao=new DAO(); // 创建DAO对象 public DAO(){ try { Class.forName("com.mysql.jdbc.Driver"); // 加载数据库驱动类 } catch (ClassNot
Java基础篇中的StillClock类用于画出时钟以方便Java进阶篇P228第二十九章多线程（第八版）ClockWithAudio类的调用。 package 多线程练习; import java.awt.*; import javax.swing.*; import java.util.*; public class StillClock extends JPanel { private int hour; private int minute; private int second; /
Create a program that draws 10 random filled shapes in random positions. Method paintComponent should contain a loop that iterates 10 times. In each iteration, the loop should determine whether to draw a rectangle or an oval, and choose coordinates
java编的五子棋 import java.util.*; import java.io.*; import java.awt.*; import java.awt.event.*; import java.applet.*; import javax.swing.*; class Gobang extends JFrame implements Runnable, ActionListener { final static int Player=1; final static int AI
Java在窗口上加载显示GIF动画图像，将多个独立的GIF图像串联在一起显示，形成GIF特有的动画形式。主要代码如下： ImageIcon[] images; //用于动画的图标数组 Timer animationTimer; int currentImage = 0; //当前图像编号 int delay = 500; //图像切换延迟 int width; //图像宽度 int height; //图像高度 public AnimatorIcon() //构造函
