Fixing squids: squid:1160 Public methods should throw at most one checked exception

[devFozgul]

This pull request is focused on resolving occurrences of Sonar rule squid:S1160 - “Public methods should throw at most one checked exception”. squid: S1170 -"public final fields should not be merely final." You can find more information about the issue here: https://dev.eclipse.org/sonar/rules/show/squid:S1160 https: https://dev.eclipse.org/sonar/rules/show/squid:S1170 Please let me know if you have any questions. Fevzi Ozgul