设置背景图片、添加音乐、监控键盘、 改变字体风格等等！
import java.applet.Applet; import java.applet.AudioClip; import java.awt.*; import java.awt.event.*; import java.io.File; import java.net.MalformedURLException; import java.net.URL; import javax.sound.sampled.*; import javax.swing.*; public class Password_Lock extends JFrame implements ActionListener{ private JLabel label1,label2; private JTextField text_Login; private JPasswordField text_password; private JButton button_login,button_exit,button_q; private JPanel panel; //private Image image = null ; private ImageIcon imageicon=new ImageIcon("D:/JAVA/Eclipse/Christmas_Eve/kulou.jpg"); private JLabel label_background=new JLabel(imageicon); public Password_Lock(){ super("密码锁"); this.setLocation(0,0); this.setSize(imageicon.getIconWidth(), imageicon.getIconHeight()); this.setUndecorated(true);//去windows修饰 /* this.addKeyListener(new KeyAdapter(){//panel不识别，KeyListener需要焦点的, 如果你按了某个按钮之类的 * (通常会使这个按钮获得焦点), 那他的父组件(例如这个panel)就无法捕获键盘事件了 public void keyPressed(KeyEvent e){ if(e.getKeyCode()==KeyEvent.VK_ESCAPE) System.exit(0); } });*/ init(); } public void init(){ panel=new JPanel(); this.add(panel,"Center"); //this.setLayout(null); panel.setLayout(null); label1=new JLabel("用户名："); label1.setBounds(new Rectangle(580,455,90,50)); label1.setFont(new Font("宋体",Font.BOLD,16)); label1.setForeground(Color.green); panel.add(label1); text_Login=new JTextField(" 计算机131"); text_Login.setEditable(false); text_Login.setFont(new Font("宋体",Font.BOLD,16)); text_Login.setForeground(Color.red); text_Login.setBounds(new Rectangle(650,465,110,30)); panel.add(text_Login); label2=new JLabel(" 密码："); label2.setBounds(new Rectangle(580,495,90,60)); label2.setFont(new Font("宋体",Font.BOLD,16)); label2.setForeground(Color.green); panel.add(label2); text_password=new JPasswordField(); text_password.setFont(new Font("宋体",Font.BOLD,30)); text_password.setBounds(new Rectangle(650,510,110,30)); panel.add(text_password); button_login=new JButton("确 定"); button_login.setBounds(new Rectangle(570,565,90,30)); button_login.setFont(new Font("宋体",Font.BOLD,16)); button_login.setForeground(Color.RED); button_login.addActionListener(this); //this.addKeyListener(this); panel.add(button_login); button_exit=new JButton("重 置"); button_exit.setBounds(new Rectangle(695,565,90,30)); button_exit.setFont(new Font("宋体",Font.BOLD,16)); panel.add(button_exit); button_exit.addActionListener( this); button_q=new JButton("退出"); button_q.setBounds(new Rectangle(0,0,2,5)); button_q.setBackground(Color.BLACK); panel.add(button_q); button_q.addActionListener(this); Toolkit.getDefaultToolkit().addAWTEventListener(new AWTEventListener(){//我去，老费劲了，加个键盘全局监听 public void eventDispatched(AWTEvent e){ if(((KeyEvent)e).getKeyChar()==KeyEvent.VK_ESCAPE){ System.exit(0); } if(((KeyEvent)e).getKeyChar()==KeyEvent.VK_ENTER){ test(); } } },AWTEvent.KEY_EVENT_MASK); label_background.setBounds(new Rectangle(0,0,imageicon.getIconWidth(), imageicon.getIconHeight())); //this.getLayeredPane().add(label_background); this.getLayeredPane().add(label_background,new Integer(Integer.MIN_VALUE));//添加到JFrame的getLayeredPane层 ((JPanel) this.getContentPane()).setOpaque(false);//透明 panel.setOpaque(false); this.setVisible(true); } public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub if(e.getSource()==button_login){ test(); } else if(e.getSource()==button_q){ System.exit(0); } else if(e.getSource()==button_exit){ text_password.setText(null); } } public void test(){ if(text_password.getText().equals("6472")){ this.setVisible(false); new newFrame(); } else { text_password.setText(null); JOptionPane.showMessageDialog(this, "密码输入有误，请重新输入"); } } class newFrame extends JFrame implements ActionListener{ private ImageIcon imageicon1=new ImageIcon("D:/JAVA/Eclipse/Christmas_Eve/平安夜.jpg"); private JLabel label_background1=new JLabel(imageicon1); private JPanel panel_1=new JPanel(); private JButton button_q=new JButton("退出"); public newFrame(){ super("你赢了！"); this.setBounds(0, 0, imageicon1.getIconWidth(), imageicon1.getIconHeight()); this.setUndecorated(true); panel_1.setLayout(null); this.getContentPane().add(panel_1); button_q.setBounds(new Rectangle(0,0,2,5)); button_q.setBackground(Color.blue); panel_1.add(button_q); button_q.addActionListener(this); playMusic();// //this.getContentPane().add(label_background1); label_background1.setBounds(new Rectangle(0,0,imageicon.getIconWidth(), imageicon.getIconHeight())); this.getLayeredPane().add(label_background1,new Integer(Integer.MIN_VALUE));//添加到JFrame的getLayeredPane层 ((JPanel) this.getContentPane()).setOpaque(false);//透明 panel_1.setOpaque(false); this.setVisible(true); } @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub if(e.getSource()==button_q){ System.exit(0); } } } public void playMusic(){ URL cb = null; File f = new File("C:\Users\xiehe\Music\WAV\12.wav"); //引号里面的是音乐文件所在的绝对鹿筋 try { cb = f.toURL(); } catch (MalformedURLException e) { // TODO Auto-generated catch block e.printStackTrace(); } AudioClip aau; aau = Applet.newAudioClip(cb); //aau.play(); aau.loop(); //循环播放 aau.play() 单曲 aau.stop()停止播放 } public static void main(String[] args) { new Password_Lock(); } }
