OOPS - inner classes

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inner classes

What are advantages of inner class

Total Answers and Comments: 2

Last Update: September 14, 2009 Asked by: jrcheenu

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Best Rated Answer

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Submitted by: ssalguti

Logical grouping of classes—If a class is useful to only one other class, then it is logical to embed it in that class and keep the two together. Nesting such "helper classes" makes their package more streamlined.

Increased encapsulation—Consider two top-level classes, A and B, where B needs access to members of A that would otherwise be declared private. By hiding class B within class A, A's members can be declared private and B can access them. In addition, B itself can be hidden from the outside world.

More readable, maintainable code—Nesting small classes within top-level classes places the code closer to where it is used.

Above answer was rated as good by the following members:
getravi2k, talktoatish

April 25, 2008 15:37:47

ssalguti

Member Since: April 2008 Contribution: 1

RE: inner classes

Logical grouping of classes—If a class is useful to only one other class then it is logical to embed it in that class and keep the two together. Nesting such "helper classes" makes their package more streamlined.

Increased encapsulation—Consider two top-level classes A and B where B needs access to members of A that would otherwise be declared private. By hiding class B within class A A's members can be declared private and B can access them. In addition B itself can be hidden from the outside world.

More readable maintainable code—Nesting small classes within top-level classes places the code closer to where it is used.

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September 14, 2009 00:08:04

goksn

Member Since: May 2009 Contribution: 94

RE: inner classes

Defining a class within another class is known as nested class.

If class B is defined within class A then B is known to A but not outside of A.

Class B has access to the members including private members of the Class A.

However the class A does not have access to the members of Class B.

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