java事件处理实验

实现如图所示的界面，以及界面上的按钮，点击相应按钮实现按钮功能。

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class TimeF extends JFrame {

    static TimeF frm = null;
    static Timer timer, timerl, timerr, timet, timerd;
    static JLabel lbl = new JLabel("滚动的字体");
    static JButton btnt = new JButton("向上");
    static JButton btnl = new JButton("向左");
    static JButton btnr = new JButton("向右");
    static JButton btnd = new JButton("向下");
    static JButton btne = new JButton("停止");
    static int i=1;
    static int movex, movey;

    public static void main(String[] args) {
        frm = new TimeF();
        timer = new Timer(10, new TimeListener());
        timerl = new Timer(10, new TimeListenerL());
        timerr = new Timer(10, new TimeListenerR());
        timerd = new Timer(10, new TimeListenerD());
        timet = new Timer(10, new TimeListenerT());
        frm.setLayout(null);
        frm.setBounds(100, 100, 500, 400);
        frm.add(btnt);
        frm.add(btnl);
        frm.add(btnr);
        frm.add(btne);
        frm.add(btnd);
        frm.add(lbl);
        btnl.setBounds(190, 150, 80, 30);
        btnt.setBounds(290, 100, 80, 30);
        btne.setBounds(290, 150, 80, 30);
        btnr.setBounds(390, 150, 80, 30);
        btnd.setBounds(290, 200, 80, 30);

        lbl.setBounds(100, 150, 150, 30);
        btnt.addActionListener(new TimeListenerT());
        btne.addActionListener(new TimeListener());
        btnr.addActionListener(new TimeListenerR());
        btnl.addActionListener(new TimeListenerL());
        btnd.addActionListener(new TimeListenerD());
        frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frm.setVisible(true);
        movex = lbl.getLocation().x;
        movey = lbl.getLocation().y;

    }

    private static class TimeListener implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            if (e.getSource() == btne) {
                timerl.stop();
                timerr.stop();
                timer.stop();
                timet.stop();
                timerd.stop();
                lbl.setForeground(Color.black);
            }
        }
    }

    private static class TimeListenerL implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            if (e.getSource() == btnl) {
                timer.stop();
                timet.stop();
                timerd.stop();
                timerr.stop();
                timerl.start();
            } else {
                if (movex <= frm.getWidth() && movex > -lbl.getWidth()) {
                    movex -= 1;
                } else if (movex <= -lbl.getWidth()) {
                    movex = frm.getWidth();
                }
                i++;
                if(i>200)
                    i=1;
                lbl.setLocation(movex, movey);
                lbl.setForeground(Color.getHSBColor(i, i - 1, i + 50));
            }
        }
    }

    private static class TimeListenerR implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            if (e.getSource() == btnr) {
                timerl.stop();
                timer.stop();
                timerd.stop();
                timet.stop();
                timerr.start();
            } else {
                if (movex < frm.getWidth()) {
                    movex += 1;
                } else {
                    movex = -lbl.getWidth();
                }
                i++;
                if(i>200)
                    i=1;
                lbl.setForeground(Color.getHSBColor(i, i - 1, i + 50));
                lbl.setLocation(movex, movey);
            }

        }
    }

    private static class TimeListenerT implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            if (e.getSource() == btnt) {
                timerl.stop();
                timer.stop();
                timerd.stop();
                timerr.stop();
                timet.start();
            } else {
                if (movey > 0) {
                    movey -= 1;
                } else {
                    movey = frm.getHeight();
                }
                i++;
                if(i>200)
                    i=1;
                lbl.setForeground(Color.getHSBColor(i, i - 1, i + 50));
                lbl.setLocation(movex, movey);
            }

        }
    }

    private static class TimeListenerD implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            if (e.getSource() == btnd) {
                timerl.stop();
                timer.stop();
                timerr.stop();
                timet.stop();
                timerd.start();
            } else {
                if (movey < frm.getHeight()) {
                    movey += 1;
                } else {
                    movey = 0;
                }
                i++;
                if(i>200)
                    i=1;
                lbl.setForeground(Color.getHSBColor(i, i - 1, i + 50));
                lbl.setLocation(movex, movey);
            }

        }
    }
}