This post explains how to use classes in Java to build objects and organize your code. Also learn: constructors, static methods, and more!

We did this by placing the keyword abstract at the beginning of the Animal class definition. The ability of descendant classes to override methods of their base class is known as polymorphism.

Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...