Spring Full-Stack Practical Cases

Feb 23, 2026 · Backend Development

8 Essential Null‑Handling Rules for Spring Boot 3 to Prevent NPEs

This article presents eight concrete rules for handling null values in Spring Boot 3 applications, illustrating common pitfalls with code snippets, explaining production‑impact risks, and offering best‑practice solutions such as using empty collections, explicit null checks, proper Optional usage, and consistent API design.