Data being retrieved even though MySQL driver is not loaded

[RajivAwadhesh kumar]

I am not able to understand how the below code works even
though I have not loaded the MySQL driver?

package com.rajiv;

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

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;

public class TestDB {

	public static void main(String[] args) {
		readDataFromDB();
		
	}

	static void readDataFromDB() {
		Connection connection = null;
		Statement stmt = null;
		ResultSet rs = null;
		try {
			//Class.forName("com.mysql.jdbc.Driver");

			String serverName = "localhost";
			String mydatabase = "rajiv";
			String url = "jdbc:mysql://" + serverName + "/" + mydatabase;
			System.out.println("url=" + url);

			String username = "root";
			String password = "root";
			int empId;
			String empName;

			connection = DriverManager.getConnection(url, username, password);
			stmt = connection.createStatement();
			rs = stmt.executeQuery("select * from rajiv.emp");

			while (rs.next()) {
				empId = rs.getInt(1);
				empName = rs.getString(2);
				System.out.println("empId=" + empId);
				System.out.println("empName=" + empName);
			} // end while

		}
//		catch (ClassNotFoundException cnfe) {
//			cnfe.printStackTrace();
//		}
		catch (SQLException sqe) {
			sqe.printStackTrace();
		} finally {
			try {
				if (null != connection) {
					connection.close();
				}
				if (null != stmt) {
					stmt.close();
				}
				if (null != rs) {
					rs.close();
				}
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}

	

}

[Horst Stieg]

You are probably using a JDBC 4.0 driver.

See here:

Any JDBC 4.0 drivers that are found in your class path are automatically loaded. (However, you must manually load any drivers prior to JDBC 4.0 with the method Class.forName.)