Pearson Education Asia. ISBN- 1. 0 : 0. 27. X / ISBN- 1. 3 : 9. A good API makes it easier to develop a program by providing all the. Server Application Programming Interface (SAPI) Simple DirectMedia. How do you declare an interface in C++? Imagine each has a Shape hierarchy of different types. You cannot combine them easily with inheritance, and add company C and you have a huge mess. An interface contains only the signatures of methods, properties, events or indexers. A class or struct that implements the interface must implement the members of the interface that are specified in the interface.
Interface in Java: Java interfaces are like Java classes but they contain only static final constants and declaration of methods. Methods are not defined and classes which implements an interface must define the body of method.
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