存入一组人名及照片，开始快速自动播放姓名和照片，按空格键停止。输出中奖！在此伴有音乐。

言曌 2017年05月14日22:38:34 5 2999 views

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1、题目

点名（或抽奖）

存入一组人名及照片，开始快速自动播放姓名和照片，按空格键停止。输出中奖！在此伴有音乐。

2、代码如下

//文件名：Demo4.java
package com.liuyanzhao;
import java.awt.*;
import java.awt.event.*;
import java.util.jar.Attributes.Name;
import javax.sound.midi.MidiEvent;
import javax.sound.midi.MidiSystem;
import javax.sound.midi.Sequence;
import javax.sound.midi.Sequencer;
import javax.sound.midi.ShortMessage;
import javax.sound.midi.Track;
import javax.swing.*;
public class Demo4 {
public static void main(String[] args) {
new GUI();
}
}
class GUI extends JFrame {
MyJPanel mp;
Timer timer;
JTextArea text;
int index;
int count = 0;
ImageIcon[] imgs = { new ImageIcon("src/images/1.jpg"), new ImageIcon("src/images/2.jpg"),
new ImageIcon("src/images/3.jpg"), new ImageIcon("src/images/4.jpg"), new ImageIcon("src/images/5.jpg"),
new ImageIcon("src/images/6.jpg"), new ImageIcon("src/images/7.jpg"), new ImageIcon("src/images/8.jpg"), };
String[] players = { "刘邦", "赵匡胤", "朱元璋", "项羽", "李世民", "曹操", "康熙", "武则天" };
public GUI() {
mp = new MyJPanel();
JPanel panel2 = new JPanel();
this.add(mp);
this.setLayout(new GridLayout(2, 1));
this.setExtendedState(JFrame.MAXIMIZED_BOTH);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setTitle("窗口");
this.addKeyListener(new keyListener());
this.setVisible(true);
text = new JTextArea("");
text.setFont(new Font("宋体", Font.BOLD, 34));
panel2.add(text);
this.add(panel2);
timer = new Timer(50, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
mp.repaint();
}
});
timer.start();
}
class MyJPanel extends JPanel {
@Override
public void paint(Graphics g) {
super.paint(g);
g.drawImage(imgs[index % imgs.length].getImage(), 770, 0, this);
text.setText(players[index % players.length]);
index++;
}
}
class keyListener implements KeyListener {
@Override
public void keyPressed(KeyEvent e) {
// TODO Auto-generated method stub
if(count<1) {
if (KeyEvent.getKeyText(e.getKeyCode()).equals("空格")) {
timer.stop();
text.insert("恭喜", 0);
text.append("获得本次大奖");
new Music();
count++;
}
}
}
@Override
public void keyReleased(KeyEvent e) {
// TODO Auto-generated method stub
}
@Override
public void keyTyped(KeyEvent e) {
// TODO Auto-generated method stub
}
}
}
class Music {
public Music() {
try {
Sequencer sequencer = MidiSystem.getSequencer();
sequencer.open();
Sequence seq = new Sequence(Sequence.PPQ, 4);
Track track = seq.createTrack();
for (int i = 0; i < 60; i += 4) {
track.add(makeEvent(144, 1, i, 100, i));
track.add(makeEvent(128, 1, i, 100, i + 2));
}
sequencer.setSequence(seq);
sequencer.setTempoInBPM(220);
sequencer.start();
} catch (Exception e) {
e.printStackTrace();
}
}
public static MidiEvent makeEvent(int comd, int chan, int one, int two, int tick) {
MidiEvent event = null;
try {
ShortMessage a = new ShortMessage();
a.setMessage(comd, chan, one, two);
event = new MidiEvent(a, tick);
} catch (Exception e) {
e.printStackTrace();
}
return event;
}
}