Interface In Java

An interface can be considered as the blueprint of a class. Methods and variables are provided in an interface and its implementations are done in a class. Till java 7 no method body remained in an interface. An instance of the interface cannot be created, unlike the abstract methods.

Properties of an Interface :

Some of the common properties are as follows:

• All methods of an interface are public static and final by default.
• Mechanism of abstraction in Java can be achieved using abstraction.
• The instance of an interface cannot be created, unlike the abstract class.
• Till Java 7 method bodies were not provided in an interface.
• Since Java 8 default and static methods can be provided in an interface.

The format for using interface:

Interfaces are declared using interface keyword. All the methods in an interface are public, static and final by default due to which total it provided abstraction in Java.

interface interfaceName{          /* code data */        }

Changes in Java 8:

Since Java 8 one can declare static and default methods in an interface. Discussion regarding this change will be done in the separate tutorial.

☛ Next >> Mouse Pointer Random Movement In Java

                    Nowadays in some office, it is required to stay on your desk and work for offi...