.In this article, I am going to show you how to start services and broadcast them through Intent class. Here, there is one single interface and three buttons named startService stopService and broadcast.

Inheritance is the one of the most important concept in object oriented programming. Inheritance is used to share properties and method between the related classes.

If an inner class is declared with a public access modifier, it can be instantiated from outside the scope of its enclosing class.

To create a static nested class, we use the static keyword in front of the class declaration, the same way we declare a static field or a method within the enclosing class.

In the previous post, we created a standard interface to get the fuel efficiency of a car. A car has many such standard functions that could be defined in terms of interfaces.

It is possible to extend an existing interface. The purpose behind doing so is to add more declarations, both constants and methods, to an existing interface.

Suppose we are asked to develop communication software such as an FTP (File Transfer Protocol) or Telnet program that uses a modem.

Interfaces define properties, methods, and events, which are the members of the interface. Interfaces contain only the declaration of the members. It is the responsibility of the deriving class to define the members.