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 stub

		check_suanfa t = new check_suanfa();
		t.buju();
	}

	@Override
	public 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;
	}

}