How to Test "NoSuchFieldException" Using if {} else{}?

Question

I have a line of code in a loop:
Field column = DownloadChildClassColumns.class.getDeclaredField(id);The above code throws "NoSuchFieldException" for certain "id"s in the "getDeclaredField" method. If it happens, I have to get the Field from another class:
Field column = DownloadParentClassColumns.class.getDeclaredField(id);How do I test using if {...} else {...}. That is, if a certain Field is unavailable in one class, then get that Field in another class?
Thank you for your guidance.

Answer 1

JavaLaptop wrote:
I might not get the idea. Sorry, my head is as hard as a stone sometimes.
If I use the "getDeclaredField( id )", I still can get the "NoSuchFieldException".
My problem is "how" to test out if certain Field is not in one class then I go to another class to get it.Do the second test in the catch clause dependant on the first e.g.
Field field = null;
try  {
    field = class1.getField("fieldName");
  } catch(NoSuchFieldException ex) {
     try {
       field.class2.getField("fieldName");
      } catch(NoSuchFieldException ex2) {
         log.error("No such field as fieldName");
         throw new IllegalStateException("fileName not found in either class");
   }