Answer / chandu

Simply you can say "to achieve multiple inheritance"

Answer / chinju

interface is used for multiple inheritance.all methods in
the interfaces must be implemented in the child class

Answer / mohammed ameem

Interfaces are used for defining the set of members which
need to be implemented. Interfaces allows calling methods of
object which may be remotely located or instantited. Thus,
Interface act as interface between the distributed
applications. Hence the name opts

Answer / sunil mahla

In big companies, project manager understand the client
requirement and make interfaces. These interfaces are then
distributed to the under developers.
Since interfaces are just outline of the method, so
developers must use them in there class and code them.
Developer need only concentration on coding. He need not
worry about which methods he use to achieve client requirement.

So interfaces provide only outline to the developer to get
the goal.

Answer / pradip kr sen

Basic Purpose is to use the defined structure/Pattern of
common implementation on the child location.

For example , in a straightline interface you defined
{x1,y1} and {x2,y2} as a parameter.
So while constructing triangle class with the help of
straighline interface(through inheritance) , you need to
follow the same number of parameter defined
on 'Straighline' Interface.

Answer / mohit jethva

1. Interface is use for follow the some coding standard
2. If we create interface then each and every devloper has
to implement all the methods.
3. For e.g. If we are creating application for Vichele then
we need to create one interface for two wheeler and one
interface for four wheeler. When any of devloper is going
to extend it then he/she has to implement every method like
Break , Gear , Liver etc....
4. Force to implement all the methods from interface.
5. Multiple inheritance.

Answer / amit

interface is used for multiple inheritance.all methods in
the interfaces must be implemented in the child class

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