This is kind of true but not quite. If you don't want to deal with any exceptions in your function you can declare that it just throws java.lang.Exception or pu

This is kind of true but not quite. If you don't want to deal with any exceptions in your function you can declare that it just throws java.lang.Exception or put a verbose list of exception types in your method signature. On the other hand, you're also free to catch and process some and only propagate a subset outside of the function or even wrap the ones you want to process and throw a different exception type from within your function that wraps the existing ones. It's not mandated but pretty idiomatic in Java that any Exception type you define should be able to accept a different exception as its 'cause' in your exception's constructor signature.