Conetion jdbc

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

public class MyDataAcces {

	private String _usuario="root";
	private String _pwd= "root";
	private static String _bd="empresa";
	static String _url = "jdbc:mysql://localhost/"+_bd;
	private Connection conn = null;

	public MyDataAcces() {

		try{
			Class.forName("com.mysql.jdbc.Connection");
			conn = (Connection)DriverManager.getConnection(_url, _usuario, _pwd);
			if(conn != null)
			{
				System.out.println("Conexi-n a base de datos "+_url+" . . . Ok");
			}
		}
		catch(SQLException ex)
		{
			System.out.println("Hubo un problema al intentar conecarse a la base de datos"+_url);
		}
		catch(ClassNotFoundException ex)
		{
			System.out.println(ex);
		}
	}