java抽奖程序源码

java抽奖程序源码及心得

代码 package cj;

importjava.awt.*;

importjavax.swing.*; importjava.awt.event.*; importjava.util.*; importjava.util.Timer; import java.io.*;

classlmChouJiang {

JFrame frame = new JFrame();

JLabellabel_name = new JLabel(\"姓名\"); JLabellabel_num = new JLabel(\"学号\"); JPanel jp1 = new JPanel(); JPanel jp2 = new JPanel(); JPanel jp3 = new JPanel(); public static int q = 0;

JButtonstartButton = new JButton(\"开始抽奖\"); JButtonstopButton = new JButton(\"结束抽奖\"); int index; // 保持学生信息与头像的同步

ArrayList array = null; // 存储读出来的学生信息 Timer timer;

publiclmChouJiang() {

// 读取学生信息

array = new ArrayList();

try {

BufferedReaderbufferReader = new BufferedReader(new FileReader(

\"C:\\\\Users\\\\qxu\\\\Desktop\\\\stu2.txt\"));

String lineContent = null; String name = \"\"; intnum = 0;

while ((lineContent = bufferReader.readLine()) != null) {

// 每一行区分的标识符是空格

StringTokenizerst = new StringTokenizer(lineContent, \"

\");

// 读取学号和姓名。每一行只有两个元素，所以I的取值就是0和1,0代表学号，1代表姓名

for (inti = 0; st.hasMoreElements(); i++) {

String word = (String) st.nextElement(); if (i == 0) {

num = Integer.parseInt(word);

} else {

}

}

}

name = word; i--;

Student student = new Student(name, num); array.add(student);

} catch (IOException e) { } /*

frame.getContentPane().add(BorderLayout.WEST, startButton); frame.getContentPane().add(BorderLayout.EAST, stopButton); frame.getContentPane().add(BorderLayout.NORTH, label_num); frame.getContentPane().add(BorderLayout.CENTER, label_name); */

frame.setLayout(new GridLayout(3,1));

jp1.add(label_num); jp2.add(label_name); jp3.add(startButton); jp3.add(stopButton);

frame.setSize(600, 600);

e.printStackTrace();

frame.setVisible(true); frame.add(jp1); frame.add(jp2); frame.add(jp3);

startButton.addActionListener(new startlButtonListener()); stopButton.addActionListener(new endButtonListener()); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

index = 0;

classMyTask extends TimerTask {

public void run() {

int end = (int) (Math.random() * array.size()); System.out.println(\"end = \" + end);

label_num.setText(\"学号：\" + String.valueOf(array.get(end).getNum()));

label_name.setText(\"姓名：\" + array.get(end).getName()); frame.repaint(); try {

Thread.sleep(5);

} catch (Exception e) { }

e.printStackTrace();

}

}

classstartlButtonListener implements ActionListener { }

public void actionPerformed(ActionEvent event) { }

if(q == 0){ }

timer.scheduleAtFixedRate(new MyTask(), 0, 100);

timer = new Timer(); q ++;

classendButtonListener implements ActionListener { }

public void actionPerformed(ActionEvent event) { }

timer.cancel(); if(q > 0){ }

q --;

classjPanel extends JPanel {

private static final long serialVersionUID = 1L;

public void paintComponent(Graphics g) {

Image image = new ImageIcon(\"image/\" + index + \".jpg\").getImage(); }

class Student {

publicintgetNum() {

returnnum;

public void setName(String name) { }

this.name = name; public String getName() { }

return name; private String name; privateintnum; }

}

g.drawImage(image, 60, 100, this);

}

}

public void setNum(intnum) { }

this.num = num;

public Student(String name, intnum) { }

this.name = name; this.num = num;

public void print() { }

System.out.println(num + \" \" + name);

public class choujiang { }

public static void main(String[] args) { }

lmChouJiangcj = new lmChouJiang();