[ISSUE-3397] Fix checkstyle violations in quickstart examples #10045
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- Extracted magic numbers to named constants with Javadoc - Added private constructors to prevent instantiation - Fixed line length violations (80 character max) - Replaced lambda with explicit anonymous class for clarity - Added comprehensive Javadoc comments - Made method parameters final This addresses part of Issue apache#3397 by cleaning up the most visible example files first. Fixes approximately 30-40 checkstyle violations in Producer.java and Consumer.java. Related to apache#3397
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This PR addresses part of Issue #3397 by fixing checkstyle violations in the quickstart example module. I'm starting with the most visible files (Producer.java and Consumer.java) to establish a pattern for fixing the remaining ~1315 violations across all example files.
Changes made:
Producer.java:
Extracted magic numbers to named constants with Javadoc (SEND_TIMEOUT_MILLIS, ERROR_SLEEP_MILLIS)
Added private constructor to prevent instantiation
Fixed line length violations (80 character max)
Simplified message creation code for better readability
Consumer.java:
Extracted hardcoded strings to constants (TAG_FILTER)
Added private constructor
Made method parameters final
Replaced lambda with explicit anonymous class for educational clarity
Added missing imports and comprehensive Javadoc
Fixed line length violations
This fixes approximately 30-40 checkstyle violations in these two files.