This content originally appeared on DEV Community and was authored by Madhu
You know how every Spring Boot exception has its own personality?
Some are calm, some bark all day, and some will destroy your entire project because you missed one annotation 😩
So I decided to imagine what each of them would be — if they were dog breeds. Because if I can’t fix my exceptions, I might as well give them personalities.
🐕 1. NullPointerException: The Labrador
Always excited, always running, and then — BAM 💥 — crashes into the wall because something wasn’t initialized.
Description: Friendly and everywhere, but if you forget to check for null… it’ll take the whole app down.
🐕 2. BeanCreationException: The German Shepherd
Super loyal, but very strict about rules. If even one bean is missing or misconfigured, it’ll bark at you like:
“WHO REGISTERED THIS CLASS WITHOUT @Component?”
🐕 3. HttpMessageNotReadableException: The Chihuahua
Loud, angry, and usually triggered by something tiny — like an extra comma in your JSON.
Mood: “I can’t read this! What is this malformed request body you’ve sent me?!”
🐕 4. DataIntegrityViolationException: The Bulldog
Doesn’t move. Doesn’t care. Will not let you insert duplicate values into that column no matter how nicely you ask.
Vibe: “Primary key means ONE, hooman. ONE.”
🐕 5. CircularDependencyException: The Husky
Loves running in circles. You can fix it ten times, and it’ll still find another way to chase its own tail.
🐕 6. ApplicationContextException: The Dalmatian
You think you’ve seen them all, but every one looks slightly different.
Always appears right before you deploy something important. Spots everywhere (logs, stack traces, everything).
🐕 7. LazyInitializationException: The Beagle
Shows up late to the party, starts sniffing around the database long after the session is closed.
Quote: “Wait, where’s the EntityManager? I just wanted to fetch the relationships!”
🐕 8. ResourceNotFoundException: The Golden Retriever
Tries its best, runs the fetch query, comes back with nothing… still happy though.
Message: “Couldn’t find it, but I love you anyway ❤️”
Which one do you think should be here in the list? 😀
This content originally appeared on DEV Community and was authored by Madhu
Madhu | Sciencx (2025-10-15T07:05:58+00:00) 🐶Spring Boot, but Every Exception Is a Dog Breed. Retrieved from https://www.scien.cx/2025/10/15/%f0%9f%90%b6spring-boot-but-every-exception-is-a-dog-breed/
Please log in to upload a file.
There are no updates yet.
Click the Upload button above to add an update.