code: public static <O extends Object> void notEmpty(O[] arr)  {
  		if(!validation) return;
  		notNull(arr);
  		if(arr.length == 0)
  			throw new ParameterException(ErrorCode.EMPTY);
  	}
docs: Checks if the given array is empty.
  @param arr The array to validate.
  @throws ParameterException if the given array is empty.