java - How to fetch variables from a third party class without in-build methods

Question

I am using a third party Java class to fetch an instance of the class. However, only a few variables can be fetched using respective methods. I can see other variables when I print the instance and I would like to fetch some of them. Is there a Java way to do that.

Answer 1

As it was pointed out in comment. You can refer to this answer. And use reflection in this way:

Field f = thirdPartyObject.getClass().getDeclaredField("hiddenString"); //NoSuchFieldException
f.setAccessible(true);
String hiddenString = (String) f.get(thirdPartyObject); //IllegalAccessException