吴裕雄--天生自然JAVA图形界面编程学习笔记：事件处理

import java.awt.event.WindowAdapter ;
import java.awt.event.ActionListener ;
import java.awt.event.WindowEvent ;
import java.awt.event.ActionEvent ;
import java.awt.Color ;
import java.awt.GridLayout ;
import java.awt.Font ;
import javax.swing.JFrame ;
import javax.swing.JButton ;
import javax.swing.JLabel ;
import javax.swing.JTextField ;
import javax.swing.JPanel ;

class ActionHandle{
    private JFrame frame = new JFrame("Welcome To MLDN") ; 
    private JButton but = new JButton("显示");
    private JLabel lab = new JLabel() ;
    private JTextField text = new JTextField(10) ;
    private JPanel pan = new JPanel() ;
    public ActionHandle(){
        Font fnt = new Font("Serief",Font.ITALIC + Font.BOLD,28) ;
        lab.setFont(fnt) ;    // 设置标签的显示文字
        lab.setText("等待用户输入信息！") ;
        but.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                // if(e.getSource() instanceof JButton){}    // 判断是否是按钮
                if(e.getSource()==but){
                    lab.setText(text.getText()) ;
                }
            }
        }) ;
        frame.addWindowListener(new WindowAdapter(){
            public void windowClosing(WindowEvent e){
                System.exit(1) ;
            }
        }) ;    // 加入事件
        frame.setLayout(new GridLayout(2,1)) ;
        pan.setLayout(new GridLayout(1,2)) ;
        pan.add(text);
        pan.add(but) ;
        frame.add(pan) ;
        frame.add(lab) ;
        frame.pack() ;
        frame.setBackground(Color.WHITE) ;
        frame.setLocation(300,200) ;
        frame.setVisible(true) ;

    }
};

public class MyActionEventDemo01{
    public static void main(String args[]){
         new ActionHandle() ;
        
    }
};

import java.awt.event.WindowAdapter ;
import java.awt.event.ActionListener ;
import java.awt.event.WindowEvent ;
import java.awt.event.ActionEvent ;
import java.awt.Color ;
import java.awt.GridLayout ;
import java.awt.Font ;
import javax.swing.JFrame ;
import javax.swing.JButton ;
import javax.swing.JLabel ;
import javax.swing.JTextField ;
import javax.swing.JPanel ;

class ActionHandle{
    private JFrame frame = new JFrame("Welcome To MLDN") ; 
    private JButton but = new JButton("显示");
    private JLabel lab = new JLabel() ;
    private JTextField text = new JTextField(10) ;
    private JPanel pan = new JPanel() ;
    public ActionHandle(){
        Font fnt = new Font("Serief",Font.ITALIC + Font.BOLD,28) ;
        lab.setFont(fnt) ;    // 设置标签的显示文字
        lab.setText("等待用户输入信息！") ;
        but.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                if(e.getSource() instanceof JButton){
                    lab.setText(text.getText()) ;
                }    // 判断是否是按钮
            }
        }) ;
        frame.addWindowListener(new WindowAdapter(){
            public void windowClosing(WindowEvent e){
                System.exit(1) ;
            }
        }) ;    // 加入事件
        frame.setLayout(new GridLayout(2,1)) ;
        pan.setLayout(new GridLayout(1,2)) ;
        pan.add(text);
        pan.add(but) ;
        frame.add(pan) ;
        frame.add(lab) ;
        frame.pack() ;
        frame.setBackground(Color.WHITE) ;
        frame.setLocation(300,200) ;
        frame.setVisible(true) ;

    }
};

public class MyActionEventDemo01{
    public static void main(String args[]){
         new ActionHandle() ;
        
    }
};

import java.awt.event.WindowAdapter ;
import java.awt.event.ActionListener ;
import java.awt.event.WindowEvent ;
import java.awt.event.ActionEvent ;
import java.awt.Color ;
import java.awt.GridLayout ;
import java.awt.Font ;
import javax.swing.JFrame ;
import javax.swing.JButton ;
import javax.swing.JLabel ;
import javax.swing.JTextField ;
import javax.swing.JPasswordField ;
import javax.swing.JPanel ;

class LoginCheck{
    private String name ;
    private String password ;
    public LoginCheck(String name,String password){
        this.name = name ;
        this.password = password ;
    }
    public boolean validate(){
        if("lixinghua".equals(name)&&"mldn".equals(password)){
            return true ;
        }else{
            return false ;
        }
    }
};

class ActionHandle{
    private JFrame frame = new JFrame("Welcome To MLDN") ; 
    private JButton submit = new JButton("登陆");
    private JButton reset = new JButton("重置");
    private JLabel nameLab = new JLabel("用户名：") ;
    private JLabel passLab = new JLabel("密   码：") ;
    private JLabel infoLab = new JLabel("用户登陆系统") ;
    private JTextField nameText = new JTextField(10) ;
    private JPasswordField passText = new JPasswordField() ;
    private JPanel pan = new JPanel() ;
    public ActionHandle(){
        Font fnt = new Font("Serief",Font.ITALIC + Font.BOLD,12) ;
        infoLab.setFont(fnt) ;    // 设置标签的显示文字
        submit.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                if(e.getSource()==submit){
                    String tname = nameText.getText() ;
                    String tpass = new String(passText.getPassword()) ;
                    LoginCheck log = new LoginCheck(tname,tpass) ;
                    if(log.validate()){
                        infoLab.setText("登陆成功，欢迎光临！") ;
                    }else{
                        infoLab.setText("登陆失败，错误的用户名或密码！") ;
                    }
                }
            }
        }) ;
        reset.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                if(e.getSource()==reset){
                    nameText.setText("") ;
                    passText.setText("") ;
                    infoLab.setText("用户登陆系统") ;
                }
            }
        }) ;
        
        frame.addWindowListener(new WindowAdapter(){
            public void windowClosing(WindowEvent e){
                System.exit(1) ;
            }
        }) ;    // 加入事件
        frame.setLayout(null) ;
        nameLab.setBounds(5,5,60,20) ;
        passLab.setBounds(5,30,60,20) ;
        infoLab.setBounds(5,65,220,30) ;
        nameText.setBounds(65,5,100,20) ;
        passText.setBounds(65,30,100,20) ;
        submit.setBounds(165,5,60,20) ;
        reset.setBounds(165,30,60,20) ;
        frame.add(nameLab) ;
        frame.add(passLab) ;
        frame.add(infoLab) ;
        frame.add(nameText) ;
        frame.add(passText) ;
        frame.add(submit) ;
        frame.add(reset) ;
        frame.setSize(280,130) ;
        frame.setBackground(Color.WHITE) ;
        frame.setLocation(300,200) ;
        frame.setVisible(true) ;

    }
};

public class MyActionEventDemo03{
    public static void main(String args[]){
         new ActionHandle() ;
        
    }
};

import java.awt.event.WindowListener ;
import java.awt.event.WindowEvent ;
import java.awt.Color ;
import javax.swing.JFrame ;
class MyWindowEventHandle implements WindowListener{
	public void windowActivated(WindowEvent e){
		System.out.println("windowActivated --> 窗口被选中") ;
	}
	public void windowClosed(WindowEvent e){
		System.out.println("windowClosed --> 窗口被关闭") ;
	}
	public void windowClosing(WindowEvent e){
		System.out.println("windowClosing --> 窗口关闭") ;
		System.exit(1) ;
	}
	public void windowDeactivated(WindowEvent e){
		System.out.println("windowDeactivated --> 取消窗口选中") ;
	}
	public void windowDeiconified(WindowEvent e){
		System.out.println("windowDeiconified --> 窗口从最小化恢复") ;
	}
	public void windowIconified(WindowEvent e){
		System.out.println("windowIconified --> 窗口最小化") ;
	}
	public void windowOpened(WindowEvent e){
		System.out.println("windowOpened --> 窗口被打开") ;
	}
};

public class MyEventWindowEventJFrame01{
	public static void main(String args[]){
		JFrame frame = new JFrame("Welcome To MLDN") ; 
		frame.addWindowListener(new MyWindowEventHandle()) ;	// 加入事件
		frame.setSize(300,150) ;
		frame.setBackground(Color.WHITE) ;
		frame.setLocation(300,200) ;
		frame.setVisible(true) ;
	}
};

　　

import java.awt.event.WindowAdapter ;
import java.awt.event.WindowEvent ;
import java.awt.Color ;
import javax.swing.JFrame ;
class MyWindowEventHandle extends WindowAdapter{
    public void windowClosing(WindowEvent e){
        System.out.println("windowClosing --> 窗口关闭") ;
        System.exit(1) ;
    }
};

public class MyEventWindowEventJFrame02{
    public static void main(String args[]){
        JFrame frame = new JFrame("Welcome To MLDN") ; 
        frame.addWindowListener(new MyWindowEventHandle()) ;    // 加入事件
        frame.setSize(300,150) ;
        frame.setBackground(Color.WHITE) ;
        frame.setLocation(300,200) ;
        frame.setVisible(true) ;
    }
};

import java.awt.event.WindowAdapter ;
import java.awt.event.WindowEvent ;
import java.awt.Color ;
import javax.swing.JFrame ;
public class MyEventWindowEventJFrame03{
	public static void main(String args[]){
		JFrame frame = new JFrame("Welcome To MLDN") ; 
		frame.addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e){
				System.out.println("windowClosing --> 窗口关闭") ;
				System.exit(1) ;
			}
		}) ;	// 加入事件
		frame.setSize(300,150) ;
		frame.setBackground(Color.WHITE) ;
		frame.setLocation(300,200) ;
		frame.setVisible(true) ;
	}
};

　　

import java.awt.event.WindowAdapter ;
import java.awt.event.KeyListener ;
import java.awt.event.WindowEvent ;
import java.awt.event.KeyEvent ;
import java.awt.Color ;
import javax.swing.JFrame ;
import java.awt.event.ActionListener ;
import java.awt.event.WindowEvent ;
import java.awt.event.ActionEvent ;
import java.awt.Color ;
import java.awt.GridLayout ;
import java.awt.Font ;
import javax.swing.JFrame ;
import javax.swing.JButton ;
import javax.swing.JLabel ;
import javax.swing.JTextArea ;
import javax.swing.JPasswordField ;
import javax.swing.JScrollPane ;
import javax.swing.JPanel ;

class MyKeyHandle extends JFrame implements KeyListener{
	private JTextArea text = new JTextArea() ;
	public MyKeyHandle(){
		super.setTitle("Welcome To MLDN") ;
		JScrollPane scr = new JScrollPane(text) ;
		scr.setBounds(5,5,300,200) ;
		super.add(scr) ;
		text.addKeyListener(this) ;
		super.addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e){
				System.exit(1) ;
			}
		}) ;	// 加入事件
		super.setSize(310,210) ;
		super.setVisible(true) ;
	}
	public void keyPressed(KeyEvent e){
		text.append("键盘“" + KeyEvent.getKeyText(e.getKeyCode())+ "”键按下
") ;
	}

	public void keyReleased(KeyEvent e){
		text.append("键盘“" + KeyEvent.getKeyText(e.getKeyCode())+ "”键松开
") ;
	}

	public void keyTyped(KeyEvent e){
		text.append("输入的内容是：" + e.getKeyChar() + "
") ;
	} 
};


public class MyKeyEventDemo01{
	public static void main(String args[]){
		new MyKeyHandle() ;
	}
};

　　

import java.awt.event.WindowAdapter ;
import java.awt.event.KeyAdapter ;
import java.awt.event.WindowEvent ;
import java.awt.event.KeyEvent ;
import java.awt.Color ;
import javax.swing.JFrame ;
import java.awt.event.ActionListener ;
import java.awt.event.WindowEvent ;
import java.awt.event.ActionEvent ;
import java.awt.Color ;
import java.awt.GridLayout ;
import java.awt.Font ;
import javax.swing.JFrame ;
import javax.swing.JButton ;
import javax.swing.JLabel ;
import javax.swing.JTextArea ;
import javax.swing.JPasswordField ;
import javax.swing.JScrollPane ;
import javax.swing.JPanel ;

class MyKeyHandle extends JFrame{
	private JTextArea text = new JTextArea() ;
	public MyKeyHandle(){
		super.setTitle("Welcome To MLDN") ;
		JScrollPane scr = new JScrollPane(text) ;
		scr.setBounds(5,5,300,200) ;
		super.add(scr) ;
		text.addKeyListener(new KeyAdapter(){
			public void keyTyped(KeyEvent e){
				text.append("输入的内容是：" + e.getKeyChar() + "
") ;
			} 
		}) ;
		super.addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e){
				System.exit(1) ;
			}
		}) ;	// 加入事件
		super.setSize(310,210) ;
		super.setVisible(true) ;
	}
	
};


public class MyKeyEventDemo02{
	public static void main(String args[]){
		new MyKeyHandle() ;
	}
};

　　

import java.awt.event.WindowAdapter ;
import java.awt.event.MouseListener ;
import java.awt.event.WindowEvent ;
import java.awt.event.MouseEvent ;
import java.awt.Color ;
import javax.swing.JFrame ;
import java.awt.event.ActionListener ;
import java.awt.event.WindowEvent ;
import java.awt.event.ActionEvent ;
import java.awt.Color ;
import java.awt.GridLayout ;
import java.awt.Font ;
import javax.swing.JFrame ;
import javax.swing.JButton ;
import javax.swing.JLabel ;
import javax.swing.JTextArea ;
import javax.swing.JPasswordField ;
import javax.swing.JScrollPane ;
import javax.swing.JPanel ;

class MyMouseHandle extends JFrame implements MouseListener{
    private JTextArea text = new JTextArea() ;
    public MyMouseHandle(){
        super.setTitle("Welcome To MLDN") ;
        JScrollPane scr = new JScrollPane(text) ;
        scr.setBounds(5,5,300,200) ;
        super.add(scr) ;
        text.addMouseListener(this) ;
        super.addWindowListener(new WindowAdapter(){
            public void windowClosing(WindowEvent e){
                System.exit(1) ;
            }
        }) ;    // 加入事件
        super.setSize(310,210) ;
        super.setVisible(true) ;
    }
    public void mouseClicked(MouseEvent e){
        int c = e.getButton() ;
        String mouseInfo = null ;
        if(c==MouseEvent.BUTTON1){
            mouseInfo = "左键" ;
        }
        if(c==MouseEvent.BUTTON3){
            mouseInfo = "右键" ;
        }
        if(c==MouseEvent.BUTTON2){
            mouseInfo = "滚轴" ;
        }
        text.append("鼠标单击：" + mouseInfo + "
") ;
    }

    public void mouseEntered(MouseEvent e){
        text.append("鼠标进入组件。
") ;
    }
    public void mouseExited(MouseEvent e){
        text.append("鼠标离开组件。
") ;
    }
    public void mousePressed(MouseEvent e){
        text.append("鼠标按下。
") ;
    }
    public void mouseReleased(MouseEvent e){
        text.append("鼠标松开。
") ;
    }
    
};


public class MyMouseEventDemo01{
    public static void main(String args[]){
        new MyMouseHandle() ;
    }
};

import java.awt.event.WindowAdapter ;
import java.awt.event.MouseAdapter ;
import java.awt.event.WindowEvent ;
import java.awt.event.MouseEvent ;
import java.awt.Color ;
import javax.swing.JFrame ;
import java.awt.event.ActionListener ;
import java.awt.event.WindowEvent ;
import java.awt.event.ActionEvent ;
import java.awt.Color ;
import java.awt.GridLayout ;
import java.awt.Font ;
import javax.swing.JFrame ;
import javax.swing.JButton ;
import javax.swing.JLabel ;
import javax.swing.JTextArea ;
import javax.swing.JPasswordField ;
import javax.swing.JScrollPane ;
import javax.swing.JPanel ;

class MyMouseHandle extends JFrame{
    private JTextArea text = new JTextArea() ;
    public MyMouseHandle(){
        super.setTitle("Welcome To MLDN") ;
        JScrollPane scr = new JScrollPane(text) ;
        scr.setBounds(5,5,300,200) ;
        super.add(scr) ;
        text.addMouseListener(new MouseAdapter(){
            public void mouseClicked(MouseEvent e){
                int c = e.getButton() ;
                String mouseInfo = null ;
                if(c==MouseEvent.BUTTON1){
                    mouseInfo = "左键" ;
                }
                if(c==MouseEvent.BUTTON3){
                    mouseInfo = "右键" ;
                }
                if(c==MouseEvent.BUTTON2){
                    mouseInfo = "滚轴" ;
                }
                text.append("鼠标单击：" + mouseInfo + "
") ;
            }
        }) ;
        super.addWindowListener(new WindowAdapter(){
            public void windowClosing(WindowEvent e){
                System.exit(1) ;
            }
        }) ;    // 加入事件
        super.setSize(310,210) ;
        super.setVisible(true) ;
    }
};


public class MyMouseEventDemo02{
    public static void main(String args[]){
        new MyMouseHandle() ;
    }
};

import java.awt.event.WindowAdapter ;
import java.awt.event.MouseMotionListener ;
import java.awt.event.WindowEvent ;
import java.awt.event.MouseEvent ;
import java.awt.Color ;
import javax.swing.JFrame ;
import java.awt.event.ActionListener ;
import java.awt.event.WindowEvent ;
import java.awt.event.ActionEvent ;
import java.awt.Color ;
import java.awt.GridLayout ;
import java.awt.Font ;
import javax.swing.JFrame ;
import javax.swing.JButton ;
import javax.swing.JLabel ;
import javax.swing.JTextArea ;
import javax.swing.JPasswordField ;
import javax.swing.JScrollPane ;
import javax.swing.JPanel ;

class MyMouseMotionHandle extends JFrame{
    public MyMouseMotionHandle(){
        super.setTitle("Welcome To MLDN") ;
        super.addMouseMotionListener(new MouseMotionListener(){
            public void mouseDragged(MouseEvent e){
                System.out.println("鼠标拖拽到：X = " + e.getX() + "，Y = " + e.getY()) ;
            }
            public void mouseMoved(MouseEvent e){
                System.out.println("鼠标移动到窗体。") ;
            }
        }) ;
        super.addWindowListener(new WindowAdapter(){
            public void windowClosing(WindowEvent e){
                System.exit(1) ;
            }
        }) ;    // 加入事件
        super.setSize(310,210) ;
        super.setVisible(true) ;
    }
};


public class MyMouseMotionEventDemo01{
    public static void main(String args[]){
        new MyMouseMotionHandle() ;
    }
};

import java.awt.event.WindowAdapter ;
import java.awt.event.MouseMotionAdapter ;
import java.awt.event.WindowEvent ;
import java.awt.event.MouseEvent ;
import java.awt.Color ;
import javax.swing.JFrame ;
import java.awt.event.ActionListener ;
import java.awt.event.WindowEvent ;
import java.awt.event.ActionEvent ;
import java.awt.Color ;
import java.awt.GridLayout ;
import java.awt.Font ;
import javax.swing.JFrame ;
import javax.swing.JButton ;
import javax.swing.JLabel ;
import javax.swing.JTextArea ;
import javax.swing.JPasswordField ;
import javax.swing.JScrollPane ;
import javax.swing.JPanel ;

class MyMouseMotionHandle extends JFrame{
    public MyMouseMotionHandle(){
        super.setTitle("Welcome To MLDN") ;
        super.addMouseMotionListener(new MouseMotionAdapter(){
            public void mouseDragged(MouseEvent e){
                System.out.println("鼠标拖拽到：X = " + e.getX() + "，Y = " + e.getY()) ;
            }
        }) ;
        super.addWindowListener(new WindowAdapter(){
            public void windowClosing(WindowEvent e){
                System.exit(1) ;
            }
        }) ;    // 加入事件
        super.setSize(310,210) ;
        super.setVisible(true) ;
    }
};


public class MyMouseMotionEventDemo02{
    public static void main(String args[]){
        new MyMouseMotionHandle() ;
    }
};