java--消除小球小游戏

import javax.swing.*; import java.awt.*; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; public class MainFrame extends JFrame { private BackgroundPanel jContentPanel = null; private Ball ball = null; private static JPanel infoPanel;//提示面板 public static void main(String[] args) { new MainFrame().setVisible(true); } public MainFrame() throws HeadlessException{//在不支持键鼠设备抛出的异常 super(); this.setTitle("消除小球游戏"); this.setSize(512,384); this.setLocationRelativeTo(null); this.setResizable(false);//窗口不可最大化 this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setContentPane(getJContentPanel()); /**提示信息*/ infoPanel = (JPanel) this.getGlassPane(); JLabel label = new JLabel("准备开始"); label.setHorizontalAlignment(SwingConstants.CENTER);//标签出现位置 label.setFont(new Font("华文行楷",Font.BOLD,35)); label.setForeground(Color.blue); infoPanel.setLayout(new BorderLayout()); infoPanel.add(label); } private BackgroundPanel getJContentPanel(){ if(jContentPanel == null){ jContentPanel = new BackgroundPanel(); jContentPanel.setLayout(null); addBall(); } return jContentPanel; } public void addBall(){ for(int i = 0;i<5;i++){ ball = new Ball(); ball.setBounds(new Rectangle(121,67,40,40)); jContentPanel.add(ball,null); ball.addMouseListener(new MouseAdapter() { public void mousePressed(MouseEvent e){ super.mousePressed(e); if(e.getSource() instanceof JLabel){//鼠标击中小球 JLabel ball = (JLabel) e.getSource();//把事件源赋给小球 jContentPanel.remove(ball);//从父容器中移出小球 jContentPanel.repaint();//重绘面板 } int count = jContentPanel.getComponentCount();//获取小球数量 if(count<=0){ int option = JOptionPane.showConfirmDialog(null,"再来一局!");//提示框 if(option == JOptionPane.YES_OPTION){//如果选择是 new Thread(new Runnable() { @Override public void run() { infoPanel.setVisible(true);//出现提示信息 try { Thread.sleep(3000);//等待3s }catch (Exception e){ e.printStackTrace(); } infoPanel.setVisible(false);//关闭提示信息 addBall();//重新生成小球 } }).start(); } } } }); } } }