How to fill all the fields in the class?

Question

Suppose I have a class that has a lot of different fields. This class is a DTO and for testing purposes, I do not care about actual values, just it exists. Is there any tool

Answer 1

Write a method with Introspector.getBeanInfo(object.getClass()).getPropertyDescriptors() in a small loop to fill fields as needed. You can recursively call this method to fill classes, collections etc.

Other way is a XML deserialization using JAXB, XStream or Abraxas.