Fixing Multiple quality issues fix 1

[devFozgul]

Fixing several squids S1151 "switch case" clauses should not have too many lines S1319 Declarations should use Java collection interfaces such as "List" rather than specific implementation classes such as "LinkedList" S1213 The members of an interface declaration or class should appear in a pre-defined order ClassVariableVisibilityCheck: Class variable fields should not have public accessibility Fevzi Ozgul