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。 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。

你好！对于你的需求，我可以为你提供一个简单的Java Swing系统示例，该系统可以连接MySQL数据库并实现基本信息录入、修改、查询等功能。以下是一个基本的示例代码：

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

public class InformationSystem extends JFrame {
    private JTextField projectNumberField, projectNameField, typeField, participantsField, projectFundingField, implementationTimeField;
    private JButton addButton, updateButton, deleteButton, searchButton;
    private JTextArea outputArea;

    private Connection connection;
    private Statement statement;

    public InformationSystem() {
        setTitle("Information System");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(500, 400);
        setLocationRelativeTo(null);

        JPanel inputPanel = new JPanel(new GridLayout(7, 2));

        inputPanel.add(new JLabel("Project Number:"));
        projectNumberField = new JTextField();
        inputPanel.add(projectNumberField);

        inputPanel.add(new JLabel("Project Name:"));
        projectNameField = new JTextField();
        inputPanel.add(projectNameField);

        inputPanel.add(new JLabel("Type:"));
        typeField = new JTextField();
        inputPanel.add(typeField);

        inputPanel.add(new JLabel("Participants:"));
        participantsField = new JTextField();
        inputPanel.add(participantsField);

        inputPanel.add(new JLabel("Project Funding:"));
        projectFundingField = new JTextField();
        inputPanel.add(projectFundingField);

        inputPanel.add(new JLabel("Implementation Time:"));
        implementationTimeField = new JTextField();
        inputPanel.add(implementationTimeField);

        addButton = new JButton("Add");
        addButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                addInformation();
            }
        });
        inputPanel.add(addButton);

        updateButton = new JButton("Update");
        updateButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                updateInformation();
            }
        });
        inputPanel.add(updateButton);

        deleteButton = new JButton("Delete");
        deleteButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                deleteInformation();
            }
        });
        inputPanel.add(deleteButton);

        searchButton = new JButton("Search");
        searchButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                searchInformation();
            }
        });
        inputPanel.add(searchButton);

        add(inputPanel, BorderLayout.NORTH);

        outputArea = new JTextArea();
        JScrollPane scrollPane = new JScrollPane(outputArea);
        add(scrollPane, BorderLayout.CENTER);

        try {
            connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/database_name", "username", "password");
            statement = connection.createStatement();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    private void addInformation() {
        String projectNumber = projectNumberField.getText();
        String projectName = projectNameField.getText();
        String type = typeField.getText();
        String participants = participantsField.getText();
        String projectFunding = projectFundingField.getText();
        String implementationTime = implementationTimeField.getText();

        String query = "INSERT INTO projects (project_number, project_name, type, participants, project_funding, implementation_time) " +
                "VALUES ('" + projectNumber + "', '" + projectName + "', '" + type + "', '" + participants + "', '" + projectFunding + "', '" + implementationTime + "')";
        
        try {
            statement.executeUpdate(query);
            outputArea.setText("Information added successfully!");
        } catch (SQLException e) {
            e.printStackTrace();
            outputArea.setText("Failed to add information.");
        }
    }

    private void updateInformation() {
        // Similar to addInformation(), but with an UPDATE query
        // Use WHERE clause to specify the project to update
    }

    private void deleteInformation() {
        // Similar to addInformation(), but with a DELETE query
        // Use WHERE clause to specify the project to delete
    }

    private void searchInformation() {
        // Perform SELECT query based on search criteria
        // Display the results in the outputArea
    }

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

请注意，上面的代码只是一个基本示例，没有包括完整的错误处理、输入验证、连接关闭等。你需要根据实际情况进行修改和完善。

你需要将代码中的 `"database_name"`, `"username"` 和 `"password"` 替换为你自己的MySQL数据库的相关信息。

此外，你还需要创建一个名为 "projects" 的表，该表应包含与项目信息相关的列（例如，project_number、project_name等）。

希望这个示例对你有所帮助！如有任何问题，请随时提问。