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What are Collections?

Posted Date: 18 Sep 2008 Resource Type: Code Snippets Category: Collections

Posted By: Ratnasri Member Level: Bronze
Rating:

Points: 5

Before going into Collections Just remember the Arrays Concept.
why because Collections are introduced to avoid the limitations with Arrays.
Limitations in Arrays are:
->Only similar data has to be stored
->There are no methods acting on arrays.....

Collections:
Array means group of similar Datatypes.Like that
Collection means an object contains group of similar/non-similar ObjectTypes.

In Arrays,we store only DATA.Similar to that In Collections, we store only OBJECT types.

If we want to store primitive data in a Collection then,that data has to be converted into object type and then store it into collection object.

There are number of predefined methods available for Collections.we can apply them on our data for processing

How No. of objects are stored in a single-object(Collection)?
Ans:Object references are stored in a Collection object.Not physically objects are stored.

Responses

Author: sri 01 Oct 2008

Member Level: Bronze Points : 1

HI

Thanks for sharing of the information
It is really usefull for me

PLEASE POST these type of articles , collections , codesnippets
and share the KNOWLEDGE with others

Once again Thank u

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