ICICI Bank Consultant Interview Questions and Answers

OOPS Concepts of Java include Inheritance, Polymorphism, Encapsulation, and Abstraction.

• Inheritance allows a class to inherit properties and behavior from another class.

• Polymorphism allows objects to be treated as instances of their parent class.

• Encapsulation hides the internal state of an object and only allows access through methods.

• Abstraction focuses on the essential qualities of an object rather than specific deta

Collections hierarchy in Java includes interfaces like List, Set, Map and their implementations like ArrayList, HashSet, HashMap.

• Java collections framework provides interfaces like List, Set, Map

• List interface allows duplicate elements and maintains insertion order, examples are ArrayList, LinkedList

• Set interface does not allow duplicate elements, examples are HashSet, TreeSet

• Map interface stores key-value pairs, examp