public class MouseTest extends Frame{
    
    private static final long serialVersionUID = 5437685336595276319L;
    List<Point> list = new ArrayList<Point>();
    
    
    public void addPoint(Point p){
        
        list.add(p);
    }
    
    /**
     * 重写画笔
     */
    @Override
    public void paint(Graphics g) {
        Color c = g.getColor();
        for (Point point : list) {
            g.setColor(Color.white);
            g.fillOval(point.x, point.y, 10, 10);
        }
        g.setColor(c);
        
    }

    public static void main(String[] args) {
        final MouseTest f = new MouseTest();
        f.setBackground(Color.black);
        f.setLayout(null);
        f.setBounds(600, 100, 300, 300);
        f.setVisible(true);
        //窗口添加鼠标点击事件
        f.addMouseListener(new MouseAdapter() {
            @Override
            public void mousePressed(MouseEvent e) {
                MouseTest f = (MouseTest) e.getSource();
                f.addPoint(new Point(e.getX(), e.getY()));
                //frame重画
                f.repaint();
                System.out.println("鼠标点击");
            }
        });
        
        f.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                MouseTest f2 = (MouseTest) e.getSource();
                f2.setVisible(false);
                //f.setVisible(false);
                //0正常退出，-1非正常退出
                System.exit(0);
                
            }
        });
        
        
        
    }

}

public class FrameTest extends Frame{
    
    @Override
    public void paint(Graphics g) {
        Color c = g.getColor();
        g.setColor(Color.green);
        g.drawLine(100, 100, 200, 200);
        g.setColor(c);
        
        //super.paint(g);
    }
    
    public void createFrame(String title,int x,int y,int w,int h){
        this.setTitle(title);
        this.setLayout(null);
        
        //this.setLayout(new FlowLayout(FlowLayout.CENTER,20,20));
        
        //new BorderLayout();
        //BorderLayout.CENTER;
        //new GridLayout(3, 2);3行两列
        
        this.setBounds(x, y, w, h);
        this.setBackground(Color.blue);
        Panel panel = new Panel();
        panel.setBounds(w/4, h/4, w/2, h/2);
        panel.setBackground(Color.yellow);
        this.add(panel);
        
        //this.add(panel, BorderLayout.NORTH);
        
        this.setVisible(true);
        
    }
    
    

    public static void main(String[] args) {
        FrameTest frameTest = new FrameTest();
        frameTest.createFrame("测试", 600, 400, 600, 600);
        
        /*Frame frame = new FrameTest();
        //frame.setLayout(null);
        frame.setBounds(200, 200, 300, 300);
        Button b = new Button("denglu");
        
        b.addActionListener(new ActionListener() {
            
            @Override
            public void actionPerformed(ActionEvent e) {
                System.out.println("点击登陆");
                
            }
        });
        
        frame.add(b);
        
        TextField field = new TextField();
        field.addActionListener(new ActionListener() {
            
            @Override
            public void actionPerformed(ActionEvent e) {
                TextField tf = (TextField) e.getSource();
                System.out.println(tf.getText());
                tf.setText("");
            }
        });
        field.setEchoChar(‘*‘);
        frame.add(field);
        
        //frame.pack();
        frame.setVisible(true);*/

    }

}

import java.awt.Frame;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class KeyTest extends Frame{

    public static void main(String[] args) {

        KeyTest k = new KeyTest();
        
        k.setLayout(null);
        k.setBounds(600, 100, 300, 300);
        k.setVisible(true);
        //键盘按下事件
        k.addKeyListener(new KeyAdapter() {
            @Override
            public void keyPressed(KeyEvent e) {
                //System.out.println("键盘按下-->"+e.getKeyCode());
                //w s a d  上下左右
                switch (e.getKeyCode()) {
                case 87:
                    System.out.println("上");
                    break;
                case 83:
                    System.out.println("下");
                    break;
                case 65:
                    System.out.println("左");
                    break;
                case 68:
                    System.out.println("右");
                    break;
                default:
                    break;
                }
                
                
            }
        });
        
        k.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                KeyTest k2 = (KeyTest) e.getSource();
                k2.setVisible(false);
                System.exit(0);
            }
        });
    }

}