Our Series

Null checks in programs are often overlooked by programmers causing serious bugs in program's code leading to NullPointerExceptions. Java 8 introduces a new class called Optional, a container that either contains a value or "empty".

This series covers Object Oriented Programming (OOP) in Java with example. Learn about Abstraction, Encapsulation, Inheritance, Polymorphism, also about Association, Aggregation, and Composition in this series