What is an interface?

Answer 1

An interface is the place where two different things meet and interact. This term often comes up with regard to computers. Data processing takes place inside the computer, and thoughts take place inside the user of the computer, and they meet at an interface, which is a keyborad and a monitor screen (and usually speakers as well).

Normally, the term interface most commonly used in networking world.Every networking equipments of the world are connected through interfaces in order to make intelligible communications such as-routers, switches, hubs-these devices has interfaces. One important characteristics of interface is that they they should have the combination of input and output.

Made a very important ( revolutionary and unpublished ) discovery - invention-the1.first practical device for reading human thoughts / human mind reading machine / Brain Computer Interface. In particular, I have created a means for people with Locked - in Syndrome ( LiS ) and ALS ( such as British physicist Stephen Hawking or Steve Gleason problem ). Another unit called human Speech Generating Device. Discovery is not published. I invite partnership. Russia. Thank you. Сурен Акопов. email : tyristcheget@gmail.com / About the problem look :

Jack Gallant, Tom Mitchell and Marcel Just, John - Dylan Haynes, human mind reading machine.

Answer 2

An interface in the Java programming language is an abstract type that is used to specify an interface (in the generic sense of the term) that classes must implement. Interfaces are declared using the interface keyword, and may only contain method signatures and constant declarations (variable declarations which are declared to be both static and final). An interface may never contain method definitions. As interfaces are implicitly abstract, they cannot be directly instantiated except when instantiated by a class which implements the said interface. The class must implement all of the methods described in the interface, or be an abstract class. Object references in Java may be specified to be of an interface type; in which case they must either be null, or be bound to an object which implements the interface. One benefit of using interfaces is that they simulate multiple inheritance. All classes in Java (other than java.lang.Object, the root class of the Java type system) must have exactly one base class; multiple inheritance of classes is not allowed. However, a Java class/interface may implement/extend any number of interfaces.

Answer 3

An interface is a group of related methods with empty bodies, so that some class will be able to implement it in the future.