An abstract class is a template definition of methods and variables in a specific class, or category of objects. In programming, objects are units of code, and each object is made into a generic class ...

The operations that may be performed on an ADT completely depend on the ADT’s purpose. For example, an ADT for a stack might include operations such as initialization, pushing data, popping data, ...

When designing applications, it is important to know when to use an abstract class and when to use an interface. Although abstract classes and interfaces seem similar in some ways, there are key ...