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Given the following application.properties settings:

medium📝 component behavior Q4 of 15
Spring Boot - Logging
Given the following application.properties settings:
logging.level.com.example=DEBUG
logging.level.com.example.service=ERROR
What will be the effective log level for the class com.example.service.UserService?
AWARN
BDEBUG
CINFO
DERROR
Step-by-Step Solution
Solution:

  1. Step 1: Understand package-level log level precedence

    More specific package settings override less specific ones.

  2. Step 2: Identify the most specific match for the class

    com.example.service.UserService matches both com.example and com.example.service, but com.example.service is more specific.

  3. Final Answer:

    ERROR -> Option D

  4. Quick Check:

    More specific package log level overrides general [OK]
Quick Trick: More specific package log level wins [OK]
Common Mistakes:
  • Assuming parent package level applies always
  • Ignoring more specific package settings
  • Confusing log levels order

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