DbConnect.java

package com.db;

import java.sql.*;

public class DbConnect {

    private static final String URL = "jdbc:mysql://localhost:3306/hospital";
    private static final String USERNAME = "root";
    private static final String PASSWORD = "root";
    private static final String DRIVER_CLASS = "com.mysql.cj.jdbc.Driver";

    static {
        try {
            Class.forName(DRIVER_CLASS);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
            throw new RuntimeException("Error loading MySQL JDBC Driver", e);
        }
    }

    public static Connection getConnection() {
        try {
            return DriverManager.getConnection(URL, USERNAME, PASSWORD);
        } catch (SQLException e) {
            e.printStackTrace();
            throw new RuntimeException("Error connecting to the database", e);
        }
    }

    public static void close(Connection connection, PreparedStatement stmt, ResultSet rs) {
        if (connection != null) {
            try {
                connection.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}