JDBC.java

import java.sql.*;
public class JDBC {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/testdb";
        String user = "root";
        String password = "password";

        try (Connection conn = DriverManager.getConnection(url, user, password);
             Statement stmt = conn.createStatement()) {

            // Insert data
            String insertQuery = "INSERT INTO students (id, name, age) VALUES (1, 'John', 20)";
            stmt.executeUpdate(insertQuery);

            // Retrieve data
            String selectQuery = "SELECT * FROM students";
            ResultSet rs = stmt.executeQuery(selectQuery);
            while (rs.next()) {
                System.out.println("ID: " + rs.getInt("id") + ", Name: " + rs.getString("name") + ", Age: " + rs.getInt("age"));
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}