java连接mysql工具类

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class MySQLConnectionUtil {
    private static final String URL = "jdbc:mysql://localhost:3306/mydatabase";
    private static final String USER = "username";
    private static final String PASSWORD = "password";

    static {
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
        } catch (ClassNotFoundException e) {
            throw new RuntimeException("Failed to load MySQL JDBC driver", e);
        }
    }

    public static Connection getConnection() throws SQLException {
        return DriverManager.getConnection(URL, USER, PASSWORD);
    }

    public static void closeConnection(Connection connection) {
        if (connection != null) {
            try {
                connection.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }

    public static void main(String[] args) {
        Connection connection = null;
        try {
            connection = MySQLConnectionUtil.getConnection();
            System.out.println("Connected to MySQL database!");
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            MySQLConnectionUtil.closeConnection(connection);
        }
    }
}