The article demonstrates how to implement a nameof-like expression in Java by introspecting bytecode at runtime, avoiding hardcoded parameter names in exceptions. While solving a minor convenience issue, it offers an educational deep dive into JVM bytecode and local variable names. The technique relies on compiling with -parameters and runtime stack manipulation rather than compile-time annotation processing.
Background
Java lacks a built-in nameof expression found in languages like C#, forcing developers to manually specify parameter names in error messages. This article explores a runtime bytecode-based workaround that examines JVM debug information to retrieve identifier names.
- Source
- Lobsters
- Published
- Aug 13, 2026 at 12:03 AM
- Score
- 6.0 / 10