code: public static Object getFieldValue(Object instance, String fieldName) {
  		try {
  			return PropertyUtils.getProperty(instance, fieldName);
  		} catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
  			JK.throww(e);
  			return null;
  		}
  	}
docs: Gets the field value.
  
  @param instance  the instance
  @param fieldName the field name
  @return the field value