Conocer los drivers disponibles a partir de una aplicación

for (Enumeration e = DriverManager.getDrivers(); e.hasMoreElements();){ 
  Driver driver = (Driver)e.nextElement(); 
  int majorVersion = driver.getMajorVersion(); 
  int minorVersion = driver.getMinorVersion(); 
  System.out.println("Driver = "+driver.getClass()+ " 
      v"+majorVersion+"."+minorVersion); 
}