Here's a quick look at the three types of class loaders and everything you need to know to work with them in your Java programs.

Object-oriented systems are usually partitioned into layers of related responsibilities and only dependencies in one direction are allowed, from higher layers (more specific, less reusable) to lower ...

OOPJ = Object Oriented Programming in Java 3rd course of the specialization BY University of California, San Diego Course Goal: Author a class in Java and explain how objects are constructed, how they ...

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.

Member access rules, super uses, using final with inheritance, polymorphism- method overriding, abstract classes, the Object class.