【良心保姆級教程】java手把手教你用swing寫一個學生的增刪改查模組

很多剛入門的同學，不清楚如何用java、swing去開發出一個系統？

不清楚如何使用java程式碼去操作資料庫進行增刪改查一些列操作，不清楚java程式碼和資料庫（mysql、sqlserver）之間怎麼聯絡起來。

一個系統本質上就是一系列的模組組合起來的，只要懂了一個模組的實現，其他的自然而然的也就不難。

今天，我們通過做一個學生管理的一個通俗模組，去給大家演示如何用java+swing+mysql去實現一個學生管理的曾刪改查。

1.前期準備工作，開發工具安裝，主要包括如下開發工具：

jdk，java開發和執行環境，1.7或者1.8的版本都可以。
eclispe，java程式碼編寫工具，主要用來寫java程式碼，當然你可以用idea
mysql，資料庫，主要用來儲存資料，5.6以上版本，8.0的版本需要注意驅動的升級
navicat for mysql 資料庫視覺化工具，主要用來操作mysql，簡化資料庫操作。

2.以上環境準備好之後，接下來可以進行資料庫表的設計，我們可以用navicat for mysql建立一個數據庫（如何建立，可以自行科普），名字叫做db_demo；

然後再新建一個數據庫表t_student，sql語句如下，可自行拷貝然後執行：

DROP TABLE IF EXISTS `t_student`;

CREATE TABLE `t_student` (

  `id` int(11) NOT NULL AUTO_INCREMENT COMMENT '學生ID',

  `stuno` varchar(32) DEFAULT NULL COMMENT '學號',

  `name` varchar(32) DEFAULT NULL COMMENT '姓名',

  `grade` varchar(32) DEFAULT NULL COMMENT '班級',

  `create_time` datetime DEFAULT NULL COMMENT '新增時間',

  `update_time` datetime DEFAULT NULL COMMENT '修改時間',

  PRIMARY KEY (`id`)

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

這樣資料庫表，就已經建立好了。資料庫表一般對應一個entity實體類，欄位互相對應，實體類程式碼如下：

package com.xiaoniucr.entity;

import java.util.Date;

/**

 * 學生實體類

 * @author Lenovo

 *

 */

public class Student {

	/**

	 * 學生ID

	 */

	private Integer id;

	/**

	 * 學號

	 */

	private String stuno;

	/**

	 * 姓名

	 */

	private String name;

	/**

	 * 班級

	 */

	private String grade;

	/**

	 * 新增時間

	 */

	private Date creatTime;

	/**

	 * 修改時間

	 */

	private Date updateTime;

	public Integer getId() {

		return id;

	}

	public void setId(Integer id) {

		this.id = id;

	}

	public String getStuno() {

		return stuno;

	}

	public void setStuno(String stuno) {

		this.stuno = stuno;

	}

	public String getName() {

		return name;

	}

	public void setName(String name) {

		this.name = name;

	}

	public String getGrade() {

		return grade;

	}

	public void setGrade(String grade) {

		this.grade = grade;

	}

	public Date getCreatTime() {

		return creatTime;

	}

	public void setCreatTime(Date creatTime) {

		this.creatTime = creatTime;

	}

	public Date getUpdateTime() {

		return updateTime;

	}

	public void setUpdateTime(Date updateTime) {

		this.updateTime = updateTime;

	}

}

3.接下來我們開始寫java程式碼了，首先設計介面，粗略思考一下，包含三個介面：學生列表查詢介面，學生資訊新增介面，學生資訊修改介面，其中新增介面和修改介面差不多的，介面如下:

查詢介面：

查詢介面設計程式碼：

package com.xiaoniucr.view;

import java.awt.EventQueue;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.text.SimpleDateFormat;

import java.util.List;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTable;

import javax.swing.JTextField;

import javax.swing.border.EmptyBorder;

import javax.swing.table.DefaultTableModel;

import com.xiaoniucr.dao.StudentDao;

import com.xiaoniucr.entity.Student;

public class UserListView extends JFrame {

	private JPanel contentPane;

	private JTable table;

	private JTextField nameText;

	private StudentDao studentDao = new StudentDao();

	/**

	 * Launch the application.

	 */

	public static void main(String[] args) {

		EventQueue.invokeLater(new Runnable() {

			public void run() {

				try {

					UserListView frame = new UserListView();

					frame.setVisible(true);

				} catch (Exception e) {

					e.printStackTrace();

				}

			}

		});

	}

	/**

	 * Create the frame.

	 */

	public UserListView() {

		setTitle("學生列表");

		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		setBounds(100, 100, 600, 337);

		setLocationRelativeTo(null);

		contentPane = new JPanel();

		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);

		contentPane.setLayout(null);

		JScrollPane scrollPane = new JScrollPane();

		scrollPane.setBounds(10, 39, 564, 232);

		contentPane.add(scrollPane);

		Object[] columns = { "ID", "學號", "姓名", "年級", "新增時間" };// 欄位

		Object[][] data = null;// 需要展示的資料，一般是二維陣列

		DefaultTableModel model = new DefaultTableModel(data, columns);

		table = new JTable(model);

		//載入學生資料

		load(null);

		scrollPane.setViewportView(table);

		JLabel lblNewLabel = new JLabel("姓名");

		lblNewLabel.setBounds(10, 10, 42, 15);

		contentPane.add(lblNewLabel);

		nameText = new JTextField();

		nameText.setBounds(44, 8, 115, 21);

		contentPane.add(nameText);

		nameText.setColumns(10);

		//查詢按鈕

		JButton searchBtn = new JButton("查詢");

		searchBtn.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {

				load(nameText.getText());

			}

		});

		searchBtn.setBounds(169, 8, 63, 23);

		contentPane.add(searchBtn);

		//新增按鈕

		JButton addBtn = new JButton("新增");

		addBtn.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {

				AddView view = new AddView();

				view.setVisible(true);

			}

		});

		addBtn.setBounds(365, 8, 63, 23);

		contentPane.add(addBtn);

		//修改按鈕

		JButton updateBtn = new JButton("修改");

		updateBtn.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {

				// 獲取選中行

				int row = table.getSelectedRow();

				if (row < 0) {

					JOptionPane.showMessageDialog(contentPane, "請選擇一條記錄", "系統提示", JOptionPane.WARNING_MESSAGE);

					return;

				}

				int id = Integer.valueOf(table.getValueAt(row, 0).toString());

				UpdateView view = new UpdateView(id);

				view.setVisible(true);

			}

		});

		updateBtn.setBounds(438, 8, 63, 23);

		//刪除按鈕

		JButton deleteBtn = new JButton("刪除");

		deleteBtn.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {

				// 獲取選中行

				int row = table.getSelectedRow();

				if (row < 0) {

					JOptionPane.showMessageDialog(contentPane, "請選擇一條記錄", "系統提示", JOptionPane.WARNING_MESSAGE);

					return;

				}

				int result = JOptionPane.showConfirmDialog(contentPane, "確認刪除該學生嗎？", "提示",

						JOptionPane.YES_NO_OPTION);

				if (result == 0) {

					int id = Integer.valueOf(table.getValueAt(row, 0).toString());

					boolean flag = studentDao.delete(id);

					if(flag){

						JOptionPane.showMessageDialog(contentPane, "刪除成功!");

						load(null);

					}else{

						JOptionPane.showMessageDialog(contentPane, "操作失敗", "系統提示", JOptionPane.WARNING_MESSAGE);

					}

				}

				return;

			}

		});

		deleteBtn.setBounds(511, 8, 63, 23);

		contentPane.add(deleteBtn);

		contentPane.add(updateBtn);

	}

	// 填充表格資料

	public void load(String name){

		List<Student> list = studentDao.queryList(name);

		DefaultTableModel tableModel = (DefaultTableModel) table.getModel();

		tableModel.setRowCount(0);// 清除原有行

		// 填充資料

		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

		for (Student item : list) {

			String[] arr = new String[5];

			arr[0] = item.getId() + "";

			arr[1] = item.getStuno();

			arr[2] = item.getName();

			arr[3] = item.getGrade();

			arr[4] = sdf.format(item.getCreatTime());

			// 新增資料到表格

			tableModel.addRow(arr);

		}

	}

}

新增介面：

新增介面程式碼：

package com.xiaoniucr.view;

import java.awt.EventQueue;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JTextField;

import javax.swing.border.EmptyBorder;

import com.xiaoniucr.dao.StudentDao;

import com.xiaoniucr.entity.Student;

public class AddView extends JFrame {

	private JPanel contentPane;

	private JTextField stunoText;

	private JTextField nameText;

	private JTextField gradeText;

	private StudentDao studentDao = new StudentDao();

	/**

	 * Launch the application.

	 */

	public static void main(String[] args) {

		EventQueue.invokeLater(new Runnable() {

			public void run() {

				try {

					AddView frame = new AddView();

					frame.setVisible(true);

				} catch (Exception e) {

					e.printStackTrace();

				}

			}

		});

	}

	/**

	 * Create the frame.

	 */

	public AddView() {

		setTitle("學生新增");

		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

		setBounds(100, 100, 443, 300);

		setLocationRelativeTo(null);

		contentPane = new JPanel();

		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);

		contentPane.setLayout(null);

		JLabel lblNewLabel = new JLabel("學號：");

		lblNewLabel.setBounds(112, 50, 43, 15);

		contentPane.add(lblNewLabel);

		stunoText = new JTextField();

		stunoText.setBounds(151, 47, 160, 21);

		contentPane.add(stunoText);

		stunoText.setColumns(10);

		JLabel lblNewLabel_1 = new JLabel("姓名：");

		lblNewLabel_1.setBounds(112, 93, 43, 15);

		contentPane.add(lblNewLabel_1);

		nameText = new JTextField();

		nameText.setBounds(151, 90, 160, 21);

		contentPane.add(nameText);

		nameText.setColumns(10);

		JLabel lblNewLabel_2 = new JLabel("班級：");

		lblNewLabel_2.setBounds(111, 134, 43, 15);

		contentPane.add(lblNewLabel_2);

		gradeText = new JTextField();

		gradeText.setBounds(151, 131, 160, 21);

		contentPane.add(gradeText);

		gradeText.setColumns(10);

		//儲存

		JButton saveBtn = new JButton("儲存");

		saveBtn.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {

				String stuno = stunoText.getText();

				String name = nameText.getText();

				String grade = gradeText.getText();

				if(stuno == null || "".equals(stuno)){

					JOptionPane.showMessageDialog(contentPane, "請輸入學號", "系統提示", JOptionPane.WARNING_MESSAGE);

					return;

				}

				if(name == null || "".equals(name)){

					JOptionPane.showMessageDialog(contentPane, "請輸入姓名", "系統提示", JOptionPane.WARNING_MESSAGE);

					return;

				}

				if(grade == null || "".equals(grade)){

					JOptionPane.showMessageDialog(contentPane, "請輸入班級", "系統提示", JOptionPane.WARNING_MESSAGE);

					return;

				}

				Student student = new Student();

				student.setStuno(stuno);

				student.setName(name);

				student.setGrade(grade);

				boolean flag = studentDao.save(student);

				if(flag){

					dispose();

					JOptionPane.showMessageDialog(contentPane, "新增成功，重新整理可檢視!");

				}else{

					JOptionPane.showMessageDialog(contentPane, "操作失敗", "系統提示", JOptionPane.WARNING_MESSAGE);

				}

				return;

			}

		});

		saveBtn.setBounds(151, 180, 74, 23);

		contentPane.add(saveBtn);

		//取消

		JButton cancleBtn = new JButton("取消");

		cancleBtn.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {

				dispose();

			}

		});

		cancleBtn.setBounds(237, 180, 74, 23);

		contentPane.add(cancleBtn);

	}

}

修改介面：

修改介面程式碼：

package com.xiaoniucr.view;

import java.awt.EventQueue;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JTextField;

import javax.swing.border.EmptyBorder;

import com.xiaoniucr.dao.StudentDao;

import com.xiaoniucr.entity.Student;

public class UpdateView extends JFrame {

	private JPanel contentPane;

	private JTextField stunoText;

	private JTextField nameText;

	private JTextField gradeText;

	private StudentDao studentDao = new StudentDao();

	/**

	 * Launch the application.

	 */

	public static void main(String[] args) {

		EventQueue.invokeLater(new Runnable() {

			public void run() {

				try {

					UpdateView frame = new UpdateView(1);

					frame.setVisible(true);

				} catch (Exception e) {

					e.printStackTrace();

				}

			}

		});

	}

	/**

	 * Create the frame.

	 */

	public UpdateView(final int id) {

		setTitle("學生編輯");

		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

		setBounds(100, 100, 443, 300);

		setLocationRelativeTo(null);

		contentPane = new JPanel();

		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);

		contentPane.setLayout(null);

		JLabel lblNewLabel = new JLabel("學號：");

		lblNewLabel.setBounds(112, 50, 43, 15);

		contentPane.add(lblNewLabel);

		stunoText = new JTextField();

		stunoText.setBounds(151, 47, 160, 21);

		contentPane.add(stunoText);

		stunoText.setColumns(10);

		JLabel lblNewLabel_1 = new JLabel("姓名：");

		lblNewLabel_1.setBounds(112, 93, 43, 15);

		contentPane.add(lblNewLabel_1);

		nameText = new JTextField();

		nameText.setBounds(151, 90, 160, 21);

		contentPane.add(nameText);

		nameText.setColumns(10);

		JLabel lblNewLabel_2 = new JLabel("班級：");

		lblNewLabel_2.setBounds(111, 134, 43, 15);

		contentPane.add(lblNewLabel_2);

		gradeText = new JTextField();

		gradeText.setBounds(151, 131, 160, 21);

		contentPane.add(gradeText);

		gradeText.setColumns(10);

		//儲存

		JButton saveBtn = new JButton("儲存");

		saveBtn.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {

				String stuno = stunoText.getText();

				String name = nameText.getText();

				String grade = gradeText.getText();

				if(stuno == null || "".equals(stuno)){

					JOptionPane.showMessageDialog(contentPane, "請輸入學號", "系統提示", JOptionPane.WARNING_MESSAGE);

					return;

				}

				if(name == null || "".equals(name)){

					JOptionPane.showMessageDialog(contentPane, "請輸入姓名", "系統提示", JOptionPane.WARNING_MESSAGE);

					return;

				}

				if(grade == null || "".equals(grade)){

					JOptionPane.showMessageDialog(contentPane, "請輸入班級", "系統提示", JOptionPane.WARNING_MESSAGE);

					return;

				}

				Student student = new Student();

				student.setId(id);

				student.setStuno(stuno);

				student.setName(name);

				student.setGrade(grade);

				boolean flag = studentDao.update(student);

				if(flag){

					dispose();

					JOptionPane.showMessageDialog(contentPane, "修改成功，重新整理可檢視!");

				}else{

					JOptionPane.showMessageDialog(contentPane, "操作失敗", "系統提示", JOptionPane.WARNING_MESSAGE);

				}

				return;

			}

		});

		saveBtn.setBounds(151, 180, 74, 23);

		contentPane.add(saveBtn);

		//取消

		JButton cancleBtn = new JButton("取消");

		cancleBtn.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {

				dispose();

			}

		});

		cancleBtn.setBounds(237, 180, 74, 23);

		contentPane.add(cancleBtn);

		//資料回顯

		Student student = studentDao.getById(id);

		stunoText.setText(student.getStuno());

		nameText.setText(student.getName());

		gradeText.setText(student.getGrade());

	}

}

4.介面設計完成之後，就是連線資料庫了，連線資料庫需要依賴一個jar包：mysql-connector-java-5.1.21.jar，資料庫連線程式碼如下：包含資料庫的連線和使用完成之後的一些資源釋放。

package com.xiaoniucr.util;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

public class JDBCUtils {

	//資料庫連線地址

	public static String URL = "jdbc:mysql://localhost:3306/db_demo?useUnicode=true&characterEncoding=utf8";

	//資料庫驅動

	public static String DRIVER = "com.mysql.jdbc.Driver";

	//資料庫使用者名稱

	public static String USER = "root";

	//資料庫密碼

	public static String PWD = "123456";

	/*

	 * 資料庫連線

	 */

	public static Connection getConnection() {

		Connection con = null;

		try {

			// 載入驅動

			Class.forName(DRIVER);

			// 獲取連線物件

			con = DriverManager.getConnection(URL, USER, PWD);

		} catch (ClassNotFoundException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		} catch (SQLException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}

		return con;

	}

	/**

	 * 關閉連線資源

	 * @param con	連線物件

	 * @param pstmt	預編譯物件

	 * @param rs	結果集

	 */

	public static void close(Connection con, PreparedStatement pstmt, ResultSet rs) {

		try {

			if (rs != null){

				rs.close();

			}

			if (pstmt != null){

				pstmt.close();

			}

			if (con != null){

				con.close();

			}

		} catch (SQLException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}

	}

}

5.資料庫連線完成之後，就是資料庫的操作了，這裡包含三個操作，學生列表的查詢，學生資訊的新增儲存到資料庫，和學生資訊的修改儲存，資料庫操作程式碼如下：

package com.xiaoniucr.dao;

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Timestamp;

import java.util.ArrayList;

import java.util.Date;

import java.util.List;

import com.xiaoniucr.entity.Student;

import com.xiaoniucr.util.JDBCUtils;

/**

 * 學生資料庫操作

 * @author Lenovo

 *

 */

public class StudentDao {

	/**

	 * 查詢學生列表

	 * @param name 學生姓名

	 * @return

	 */

	public List<Student> queryList(String name){

		List<Student> list = new ArrayList<Student>();

		Connection con = null;

		PreparedStatement pstmt = null;

		ResultSet rs = null;

		try {

			con = JDBCUtils.getConnection();

			List<Object> params = new ArrayList<>();

			StringBuffer sb = new StringBuffer("select * from t_student where 1=1 ");

			if(name != null && !"".equals(name)){

				sb.append("and name like ? ");

				params.add(name);

			}

			sb.append("order by create_time desc");

			pstmt = con.prepareStatement(sb.toString());

			if(params != null && params.size()>0){

				for(int i=0; i<params.size(); i++){

					pstmt.setObject(i, params.get(i));

				}

			}

			rs = pstmt.executeQuery();

			while(rs.next()){

				Student student = new Student();

				student.setId(rs.getInt("id"));

				student.setStuno(rs.getString("stuno"));

				student.setName(rs.getString("name"));

				student.setGrade(rs.getString("grade"));

				student.setCreatTime(rs.getDate("create_time"));

				student.setUpdateTime(rs.getDate("update_time"));

				list.add(student);

			}

		} catch (SQLException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}finally {

			JDBCUtils.close(con, pstmt, rs);

		}

		return list;

	}

	/**

	 * 儲存學生資訊

	 * @param student

	 * @return

	 */

	public boolean save(Student student){

		Connection con = null;

		String sql = "insert into t_student(stuno,name,grade,create_time,update_time) values(?,?,?,?,?)";

		PreparedStatement pstmt = null;

		try {

			con = JDBCUtils.getConnection();

			pstmt = con.prepareStatement(sql);

			pstmt.setString(1, student.getStuno());

			pstmt.setString(2, student.getName());

			pstmt.setString(3, student.getGrade());

			Date date = new Date();

			pstmt.setTimestamp(4, new Timestamp(date.getTime()));

			pstmt.setTimestamp(5, new Timestamp(date.getTime()));

			int rows = pstmt.executeUpdate();

			if(rows > 0){

				return true;

			}

		} catch (SQLException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		} finally {

			JDBCUtils.close(con, pstmt, null);

		}

		return false;

	}

	/**

	 * 修改學生資訊

	 * @param student

	 * @return

	 */

	public boolean update(Student student){

		Connection con = null;

		String sql = "update t_student set stuno=?,name=?,grade=?,update_time=? where id=?";

		PreparedStatement pstmt = null;

		try {

			con = JDBCUtils.getConnection();

			pstmt = con.prepareStatement(sql);

			pstmt.setString(1, student.getStuno());

			pstmt.setString(2, student.getName());

			pstmt.setString(3, student.getGrade());

			Date date = new Date();

			pstmt.setTimestamp(4, new Timestamp(date.getTime()));

			pstmt.setInt(5, student.getId());

			int rows = pstmt.executeUpdate();

			if(rows > 0){

				return true;

			}

		} catch (SQLException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		} finally {

			JDBCUtils.close(con, pstmt, null);

		}

		return false;

	}

	/**

	 * 刪除學生資訊

	 * @param student

	 * @return

	 */

	public boolean delete(int id){

		Connection con = null;

		String sql = "delete from t_student where id=?";

		PreparedStatement pstmt = null;

		try {

			con = JDBCUtils.getConnection();

			pstmt = con.prepareStatement(sql);

			pstmt.setInt(1, id);

			int rows = pstmt.executeUpdate();

			if(rows > 0){

				return true;

			}

		} catch (SQLException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		} finally {

			JDBCUtils.close(con, pstmt, null);

		}

		return false;

	}

	/**

	 * 根據ID查詢學生

	 * @param id 學生ID

	 * @return

	 */

	public Student getById(int id){

		Student student = null;

		Connection con = null;

		PreparedStatement pstmt = null;

		ResultSet rs = null;

		try {

			con = JDBCUtils.getConnection();

			String sql = "select * from t_student where id = ?";

			pstmt = con.prepareStatement(sql);

			pstmt.setObject(1, id);

			rs = pstmt.executeQuery();

			while(rs.next()){

				student = new Student();

				student.setId(rs.getInt("id"));

				student.setStuno(rs.getString("stuno"));

				student.setName(rs.getString("name"));

				student.setGrade(rs.getString("grade"));

				student.setCreatTime(rs.getDate("create_time"));

				student.setUpdateTime(rs.getDate("update_time"));

			}

		} catch (SQLException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}finally {

			JDBCUtils.close(con, pstmt, rs);

		}

		return student;

	}

}

　　以上就是全部的程式碼了，大家可以參考一下，或者直接建立一個專案，然後程式碼複製進去，基本都可以跑起來。

【良心保姆級教程】java手把手教你用swing寫一個學生的增刪改查模組

【良心保姆級教程】java手把手教你用swing寫一個學生的增刪改查模組

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