吴裕雄--天生自然JAVA图形界面编程学习笔记：事件处理

其他 2020-03-02 23:34:14 阅读次数: 0 
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\n") ;
	}

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

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


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() + "\n") ;
			} 
		}) ;
		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 + "\n") ;
    }

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


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 + "\n") ;
            }
        }) ;
        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() ;
    }
};

猜你喜欢

转载自www.cnblogs.com/tszr/p/12398891.html
今日推荐
基于大语言模型的开源知识库问答系统 MaxKB GitHub Star 数量突破 5,000 个！
美国拟限制 AI 大模型出口中国和俄罗斯
苹果将与 OpenAI 达成协议，将 ChatGPT 应用于 iPhone
openKylin 社区生态委员会第六次会议圆满召开
阿里云正式发布通义千问 2.5
Python 3.13 发布首个 Beta：实验性自由线程模式和 JIT、改进交互式解释器
Stack Overflow 拿我的代码去训练 AI 大模型，还封了我的账号
Pop!_OS 的 COSMIC 桌面完成 App Store 上架工作
报告：Django 仍然是 74% 开发者的首选
《2024 年一季度互联网投融资运行情况》研究报告
15 年前上了“FFmpeg 耻辱柱”，今天他还得谢谢咱——腾讯QQPlayer一雪前耻？
TIOBE 5 月榜单：Fortran “复活”进入 Top 10
周排行
BPM为企业带来的实际利益
好程序员web前端分享css常用属性缩写
Java文件下载（excel）
css样式的动态添加及显示和隐藏等零碎用法
axios全局配置以及拦截器
使用Logstash来实时同步MySQL和log日志数据到ES
C++获取当前时间（年月日、时分秒、毫秒）
Odoo产品分析 (四) -- 工具板块(11) -- 网站即时聊天(1)
Java环境配置正确，但是java、javac、java -version均返回“不是内部或外部命令，也不是可运行的程序或批处理文件”？
01 官网下载各种CentOS教程（超详细版）
每日归档
更多
2024-05-14(0)
2024-05-13(18)
2024-05-12(0)
2024-05-11(38)
2024-05-10(38)
2024-05-09(35)
2024-05-08(42)
2024-05-07(14)
2024-05-06(40)
2024-05-05(0)

代码天地 © 2018 codetd.com

境外服务器   最新电视剧2022