简易java签到程序

3b. 编写图形化的考勤签到程序。

介绍：采用java swing组件进行编程，其中用到的知识点主要有①、arraylist数组的使用；②txt文本的读取和写入；③字符串的处理；④java的简单GUI编程

源码链接地址：下载

效果图：

源码：

package suanfa.whp;import java.awt.BorderLayout;import java.awt.Color;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.BufferedReader;import java.io.File;import java.io.FileOutputStream;import java.io.FileReader;import java.io.IOException;import java.io.PrintWriter;import java.util.ArrayList;import java.util.concurrent.ArrayBlockingQueue;import javax.swing.*;/** * 简易签到程序 *  * @author wanghaiping *  */public class check_suanfa implements ActionListener {ArrayList list = new ArrayList(); // 用于取出txt内容的list数组ArrayList list1 = new ArrayList(); // 用于存储内容到txt的list1数组String path; // 选中文件的路劲String information = ""; // 保存未到名单的信息String a[];//用于临时分割字符使用String b[];// 未到人次;int leng = -3;int count = 0;//未到人次计数JFrame jf;JTextField jtxt1;JTextField jtxt2;JTextField jtxt3;JButton jbtn1;JButton jbtn2;JPanel jp1, jp2, jp3;JComboBox jcb;JTextArea jtarea;public void buju() {jf = new JFrame("");String[] jcb_string = { "计科1111", "计科1112", "计科1113", "计科1114" };jcb = new JComboBox(jcb_string);jtarea = new JTextArea(3, 4);jtarea.setBackground(Color.gray);jtarea.setEditable(false);jtxt1 = new JTextField(10);jtxt2 = new JTextField(10);jtxt3 = new JTextField(10);jp1 = new JPanel();jp2 = new JPanel();jp3 = new JPanel();jbtn1 = new JButton("是");jbtn2 = new JButton("否");jcb.addActionListener(this);jbtn1.addActionListener(this);jbtn2.addActionListener(this);jp1.add(jcb);jp2.add(jtxt1);jp2.add(jtxt2);jp2.add(jtxt3);jp2.add(jbtn1);jp2.add(jbtn2);jp3.add(jtarea);jf.add(jp1, BorderLayout.NORTH);jf.add(jp2, BorderLayout.CENTER);jf.add(jp3, BorderLayout.SOUTH);jf.setSize(500, 400);jf.setLocation(500, 200);jf.setVisible(true);jf.setDefaultCloseOperation(jf.EXIT_ON_CLOSE);}// 主函数public static void main(String[] args) {// TODO Auto-generated method stubcheck_suanfa t = new check_suanfa();t.buju();}@Overridepublic void actionPerformed(ActionEvent e) {// TODO 自动生成的方法存根if (e.getSource() == jcb) {try{path = "check/" + (String) jcb.getSelectedItem() + ".txt";check_suanfa cs = new check_suanfa();list = cs.read(path);String gets = "";for (int i = 0; i < list.size(); i++) {gets = gets + (String) list.get(i) + " ";}String a[] = gets.split(" ");for (int j = 0; j < a.length; j++) {list1.add(a[j].toString());}jtxt1.setText(a[0]);jtxt2.setText(a[1]);jtxt3.setText(a[2]);}catch (Exception e1) {JOptionPane.showMessageDialog(null, "学生名单有错误！请更正名单后重启软件！");}}if (leng < list1.size() - 3) {if (e.getSource() == jbtn1) {leng = leng + 3;jtxt1.setText((String) list1.get(leng));jtxt2.setText((String) list1.get(leng + 1));jtxt3.setText((String) list1.get(leng + 2));int newlist1 = Integer.parseInt(jtxt3.getText()) + 1;String newlist2 = String.valueOf(newlist1);Object asa = newlist2;list1.set(leng + 2, asa);}if (e.getSource() == jbtn2) {leng = leng + 3;jtxt1.setText((String) list1.get(leng));jtxt2.setText((String) list1.get(leng + 1));jtxt3.setText((String) list1.get(leng + 2));information = information + jtxt2.getText() + " ";System.out.print(information);count++;jtarea.setText("未到人次：" + count + "\r\n" + "本次未到人名单："+ information);}} else {JOptionPane.showMessageDialog(null, "签名完成！");check_suanfa cs = new check_suanfa();cs.write(list1, path);}}public void write(ArrayList add_list1, String path) {try {FileOutputStream fou = null;fou = new FileOutputStream(path);// true,设置可追加String s = "";for (int i = 0; i < add_list1.size() - 2; i = i + 3) {s = s + (String) add_list1.get(i) + " "+ (String) add_list1.get(i + 1) + " "+ (String) add_list1.get(i + 2) + "\r\n";}PrintWriter pw = new PrintWriter(fou);pw.write(s);pw.close();fou.close();} catch (Exception e) {e.printStackTrace();}}public ArrayList read(String class_name) {ArrayList list = new ArrayList();BufferedReader input = null;try {FileReader in = new FileReader(class_name);input = new BufferedReader(in);String ss;try {while ((ss = input.readLine()) != null) {String[] s = ss.split("\r\n");for (int i = 0; i < s.length; i++) {list.add(s[i].toString()); // 将String s中的内容添加到动态数组中}}} catch (IOException e) {// TODO 自动生成的 catch 块e.printStackTrace();}in.close();input.close();} catch (Exception e) {// TODO 自动生成的 catch 块e.printStackTrace();}return list;}}