code: public static final String extractSimpleClassName(String className) {
  		if (className == null) {
  			throw new NullPointerException();
  		}
  		
  		final int idx = className.lastIndexOf('.');
  		if (idx == -1) {
  			return className;
  		} else {
  			return className.substring(idx + 1);
  		}
  	}
docs: Extract the simple class name from a fully qualified  (normalized) class name, i.e.: converts
  "java.lang.Object" to "Object".
  
  @param className
  @return