General code quality fix-1

[faisal-hameed]

This pull request is focused on resolving occurrences of Sonar rules squid:S1118 - Utility classes should not have public constructors. squid:S128 - Switch cases should end with an unconditional "break" statement. You can find more information about the issues here: https://dev.eclipse.org/sonar/rules/show/squid:S1118 https://dev.eclipse.org/sonar/rules/show/squid:S128

Please let me know if you have any questions.

Faisal Hameed