EPAM Systems Interview Question

Java OOP principles Overload VS Override Java collections: base usage (List, Map) Interface and Abstract class, access modifiers Java loops Java collections: practical usage of most Collections classes (List, Set, Map) Static, final (class, method, variable) Object methods(equals()/hashCode()/toString()) Exceptions hierarchy, exception handling (try/catch/finally, try with resources) Stream API methods, lambda expressions Functional interfaces Service Locator/Singleton/Factory patterns Java collections: implementation and comparing of different Collections classes Comparator knowledge Implementation of custom exception