java学习日记---------------------------------对JFrame的操作

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();
    }
}