TRUNK-5030 Collection.isEmpty() should be used to test for emptiness

[reubenvarghese1]

Description

Replaced all the other ways of checking if size is 0 by using isEmpty() function

Related Issue

see https://issues.openmrs.org/browse/TRUNK-5030

Checklist:

• My pull request only contains one single commit.
• My pull request is based on the latest master branch
  git pull --rebase upstream master.
• I ran mvn clean package right before creating this pull request and
  added all formatting changes to my commit.
• My code follows the code style of this project.
• I have read the CONTRIBUTING document.
• All existing tests passed.

[mention-bot]

@reubenvarghese1, thanks for your PR! By analyzing the history of the files in this pull request, we identified @bmamlin, @suniala and @dkayiwa to be potential reviewers.

[teleivo]

@reubenvarghese1 can you fix the formatting here please

[reubenvarghese1]

@teleivo I wonder why this test is failing now.I had tested the build before creating the PR.I'll look into it and the formatting :)

[reubenvarghese1]

I just tried running that test in my PC and it compiled without any errors , now i'm kinda clueless regarding the error out here.Any ideas?

[teleivo]

thanks @reubenvarghese1 👍

[teleivo]

@reubenvarghese1 please squash your two commits into one

[coveralls]

Coverage increased (+0.03%) to 55.725% when pulling 24f555d on reubenvarghese1:master into 6c60380 on openmrs:master.

[coveralls]

Coverage increased (+0.03%) to 55.728% when pulling 221fe59 on reubenvarghese1:master into 6c60380 on openmrs:master.

[reubenvarghese1]

@teleivo Squashed the commits .I think we are good to go :-)

[teleivo]

@reubenvarghese1 looks good to me, @dkayiwa :)

[dkayiwa]

Thanks @reubenvarghese1 for working on it and thanks @teleivo for reviewing! 😊

[teleivo]

thank you @reubenvarghese1 technical debt went down :)
see https://ci.openmrs.org/sonar/dashboard/index/1865?did=1

[reubenvarghese1]

Anytime @teleivo .I'm glad my contribution was of use :-)