Database Connection in Advanced Java in Hindi

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

public class JDBCExample {
    public static void main(String[] args) {
        // Database connection details
        String url = "jdbc:mysql://localhost:3306/testdb"; // Database URL
        String user = "root"; // Database Username
        String password = "password"; // Database Password

        // JDBC Connection, Statement और ResultSet के लिए variables
        Connection con = null;
        Statement stmt = null;
        ResultSet rs = null;

        try {
            // 1. JDBC Driver Load करें
            Class.forName("com.mysql.cj.jdbc.Driver");

            // 2. Database से कनेक्शन बनाएं
            con = DriverManager.getConnection(url, user, password);
            System.out.println("Database connected successfully!");

            // 3. SQL Query तैयार करें और execute करें
            stmt = con.createStatement();
            String query = "SELECT id, name, email FROM users";
            rs = stmt.executeQuery(query);

            // 4. ResultSet से डेटा प्राप्त करें
            while (rs.next()) {
                int id = rs.getInt("id");
                String name = rs.getString("name");
                String email = rs.getString("email");

                System.out.println("ID: " + id + ", Name: " + name + ", Email: " + email);
            }
        } catch (ClassNotFoundException e) {
            System.out.println("JDBC Driver not found!");
            e.printStackTrace();
        } catch (SQLException e) {
            System.out.println("Database connection error!");
            e.printStackTrace();
        } finally {
            // 5. Resources को close करें
            try {
                if (rs != null) rs.close();
                if (stmt != null) stmt.close();
                if (con != null) con.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}