This class is defined as an abstract mixin class. It must be implemented by subclassing it or inheriting from it as a mixin. Many of the methods in this class are abstract and must be overridden or they will throw a syntax error when invoked.
The class InputStream subclasses (specializes) The Object Class and is a mixin class (it can be inherited by other classes). The following class inherits (specializes) this mixin class: