AppyStack Interview Questions and Answers

OOP in Java stands for Object-Oriented Programming, a programming paradigm that uses objects to design and build applications.

• OOP focuses on creating objects that contain data and methods to manipulate that data.

• Key principles of OOP in Java include encapsulation, inheritance, and polymorphism.

• Example: Creating a class 'Car' with attributes like 'make', 'model', and methods like 'drive' and 'stop'.

Collection framework is a unified architecture for representing and manipulating collections of objects in Java.

• It provides interfaces (like List, Set, Map) and classes (like ArrayList, HashSet, HashMap) to store and manipulate groups of objects.

• It allows for easy manipulation, sorting, searching, and iteration of collections.

• Collections framework provides algorithms to operate on collections, such as sorting and searc...read more