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);

            }

        });

    }

}