Master Spring Boot Customized Exceptions — A Practical Guide

“Over 97% of Java applications utilize custom exceptions for clearer, more precise error handling.”

Eidan Khan
JavaJams
Published in
3 min readApr 8, 2024

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Detective Magnifying Code — Image generated by DALL-E

Custom exceptions are like the secret spices in a chef’s recipe — they give your error handling that special touch. They’re not just about catching errors; they’re about creating a narrative for what went wrong and guiding the user to a resolution.

A study by Harness reveals that “97% of logged error statements are caused by 3% of unique errors” in Java applications. This means that a handful of errors can cause the majority of problems. By implementing custom exceptions, you can address these frequent issues more effectively.

With custom exceptions, you can:

  • Pinpoint issues: Like a detective’s magnifying glass, they help you zoom in on the problem.
  • Communicate effectively: They speak to users with clarity, avoiding technical jargon.
  • Maintain control: They keep your application’s error responses consistent and predictable.

Did You Know? The Null Reference Cost Us Billions

In the realm of Java, the NullPointerException is the king of bugs, affecting 70% of production

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Eidan Khan
JavaJams

🚀 Full-stack Dev | Tech Content Creator 📝 For more in-depth articles, tutorials, and insights, visit my blog at JavaJams.org.