Java Debugging

Tips for analysis and debugging regarding stack traces.

This is usually enough to see the actual error and the immediate call chain.

For example:

• NullPointerException
• BeanCreationException
• SQLException

For example:

at com.myapp.service.UserService...

This is often more useful than dozens of Spring framework lines.

In Spring Boot, the real root cause is often 1-3 exceptions deeper.

Copy around 50-100 lines, but do not automatically copy the entire stack trace if it is several hundred lines long.

Beginning of the exception
+ all "Caused by:" sections
+ the first lines pointing to your own code

= about 30-60 lines

This is usually ideal for analysis and debugging.