java-exceptions

3 Posts

Suppressed Exceptions in Java: try-with-resources Explained

A Suppressed: block in a Java stack trace is a second exception thrown while closing a resource. How try-with-resources records it, and how to read it.

Custom Exception in Java: Write Ones That Explain Themselves

A custom exception in Java should tell you which value, which layer and why. How to write messages, chain causes and rethrow without losing the trace.

Caused by in Java Stack Traces: Finding the Root Cause

A Caused by in a Java stack trace is a wrapped second exception. How chains print, what '... N more' hides, and how to find the root cause every time.