Fix Checkstyle Errors and Unit Test Case Failure in case_resolver_jdbc Branch

[Jithendar12]

Issue #, if available:
case_resolver_jdbc branch have checkstyle errors and a failing unit test case in athena-saphana module, resulting in build failure.

Description of changes:
Fixed all Checkstyle errors and failing unit test case.

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Please upload report for BASE (case_resolver_jdbc@ac0155f). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
...ena/connectors/redshift/RedshiftRecordHandler.java	0.00%	2 Missing ⚠️

Additional details and impacted files

@@                  Coverage Diff                  @@
##             case_resolver_jdbc    #2671   +/-   ##
=====================================================
  Coverage                      ?   60.91%           
  Complexity                    ?     3892           
=====================================================
  Files                         ?      602           
  Lines                         ?    21928           
  Branches                      ?     2702           
=====================================================
  Hits                          ?    13357           
  Misses                        ?     7263           
  Partials                      ?     1308           

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