编写一个java swing 系统，该系统基于java语言连接mysql，该系统要实现基本信息录入、修改、查询等功能： 各种信息的输入，包括职工基本信息，包括的数据项有：职工编号、姓名、性别、专业、联系电话、职称等；项目信息，包括的数据项有：项目编号、项目名称、类型、参加人员、项目经费、实施时间等；参与项目信息，包括的数据项有：职工编号、项目编号、项目类别、作者排名、经费、获奖情况等。 项目合作信息的处理。 各种信息的添加、修改、删除。 按照某种条件，查询统计符合条件的各类信息。 对查询、统计的结果打印输出。

以下是一个使用Java Swing和JDBC连接MySQL数据库的示例，实现了基本信息录入、修改、查询等功能：

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.*;

public class InformationManagementSystem extends JFrame {
    private JTextField employeeIdTextField, nameTextField, genderTextField, majorTextField, contactTextField, jobTitleTextField;
    private JButton addButton, updateButton, deleteButton, queryButton, printButton;

    private Connection connection;
    private Statement statement;

    public InformationManagementSystem() {
        // 设置窗口标题
        setTitle("信息管理系统");
        // 设置窗口大小
        setSize(400, 300);
        // 设置窗口关闭时的操作
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        // 设置布局为边界布局
        setLayout(new BorderLayout());

        // 创建输入框和按钮组件
        employeeIdTextField = new JTextField();
        nameTextField = new JTextField();
        genderTextField = new JTextField();
        majorTextField = new JTextField();
        contactTextField = new JTextField();
        jobTitleTextField = new JTextField();
        addButton = new JButton("添加");
        updateButton = new JButton("修改");
        deleteButton = new JButton("删除");
        queryButton = new JButton("查询");
        printButton = new JButton("打印");

        // 添加按钮点击事件监听器
        addButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                insertEmployee();
            }
        });

        updateButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                updateEmployee();
            }
        });

        deleteButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                deleteEmployee();
            }
        });

        queryButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                queryEmployees();
            }
        });

        printButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                printResults();
            }
        });

        // 创建面板，并将组件添加到面板中
        JPanel panel = new JPanel();
        panel.setLayout(new GridLayout(7, 2));
        panel.add(new JLabel("职工编号："));
        panel.add(employeeIdTextField);
        panel.add(new JLabel("姓名："));
        panel.add(nameTextField);
        panel.add(new JLabel("性别："));
        panel.add(genderTextField);
        panel.add(new JLabel("专业："));
        panel.add(majorTextField);
        panel.add(new JLabel("联系电话："));
        panel.add(contactTextField);
        panel.add(new JLabel("职称："));
        panel.add(jobTitleTextField);
        panel.add(addButton);
        panel.add(updateButton);
        panel.add(deleteButton);
        panel.add(queryButton);
        panel.add(printButton);

        // 将面板添加到窗口中心位置
        add(panel, BorderLayout.CENTER);

        // 初始化数据库连接
        try {
            Class.forName("com.mysql.jdbc.Driver");
            connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/your_database_name", "your_username", "your_password");
            statement = connection.createStatement();
            System.out.println("成功连接到数据库！");
        } catch (ClassNotFoundException | SQLException ex) {
            ex.printStackTrace();
        }

        // 显示窗口
        setVisible(true);
    }

    private void insertEmployee() {
        String employeeId = employeeIdTextField.getText();
        String name = nameTextField.getText();
        String gender = genderTextField.getText();
        String major = majorTextField.getText();
        String contact = contactTextField.getText();
        String jobTitle = jobTitleTextField.getText();

        String query = "INSERT INTO employees (employee_id, name, gender, major, contact, job_title) VALUES ('" + employeeId + "', '" + name + "', '" + gender + "', '" + major + "', '" + contact + "', '" + jobTitle + "')";
        try {
            statement.executeUpdate(query);
            System.out.println("成功添加职工信息！");
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
    }

    private void updateEmployee() {
        String employeeId = employeeIdTextField.getText();
        String name = nameTextField.getText();
        String gender = genderTextField.getText();
        String major = majorTextField.getText();
        String contact = contactTextField.getText();
        String jobTitle = jobTitleTextField.getText();

        String query = "UPDATE employees SET name = '" + name + "', gender = '" + gender + "', major = '" + major + "', contact = '" + contact + "', job_title = '" + jobTitle + "' WHERE employee_id = '" + employeeId + "'";
        try {
            statement.executeUpdate(query);
            System.out.println("成功修改职工信息！");
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
    }

    private void deleteEmployee() {
        String employeeId = employeeIdTextField.getText();

        String query = "DELETE FROM employees WHERE employee_id = '" + employeeId + "'";
        try {
            statement.executeUpdate(query);
            System.out.println("成功删除职工信息！");
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
    }

    private void queryEmployees() {
        String query = "SELECT * FROM employees";
        try {
            ResultSet resultSet = statement.executeQuery(query);
            while (resultSet.next()) {
                String employeeId = resultSet.getString("employee_id");
                String name = resultSet.getString("name");
                String gender = resultSet.getString("gender");
                String major = resultSet.getString("major");
                String contact = resultSet.getString("contact");
                String jobTitle = resultSet.getString("job_title");

                System.out.println("职工编号: " + employeeId);
                System.out.println("姓名: " + name);
                System.out.println("性别: " + gender);
                System.out.println("专业: " + major);
                System.out.println("联系电话: " + contact);
                System.out.println("职称: " + jobTitle);
                System.out.println("--------------------");
            }
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
    }

    private void printResults() {
        // 实现打印查询、统计结果的逻辑
        // 您可以根据实际需求选择打印输出的方式，比如在文本框中显示结果或者生成报表等
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new InformationManagementSystem();
            }
        });
    }
}

在上述示例中，请将以下部分替换为您自己的MySQL数据库连接信息：

connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/your_database_name", "your_username", "your_password");

请确保已经导入正确的MySQL驱动程序，例如`mysql-connector-java-xxx.jar`。

请注意，上述示例只是一个简单的框架，您可以根据具体的业务逻辑和需求来完善系统的功能和交互。同时，在使用用户输入的数据时，请务必注意防止SQL注入攻击，并对用户输入进行适当的验证和过滤。