ClassCastException when casting to the same class

Question

I have 2 different Java projects, one has 2 classes: dynamicbeans.DynamicBean2 and dynamic.Validator.

On the other project, I load both of

Answer 1

I was getting this problem after adding a dependency to spring-boot-devtools in my Springboot project. I removed the dependency and the problem went away. My best guess at this point is that spring-boot-devtools brings in a new classloader and that causes the issue of class casting problems between different classloaders in certain cases where the new classloader is not being used by some threads.

Reference: A dozer map exception related to Spring boot devtools