Answer / debapriya

See HasMap is used when u want to use key value pair
If u r storing Any Objects the better u write ur code for
hascode implementation ,the better the the retrieval process is

Set maintains order,each time u add a object ,it checks
whether it exists or not calling equals which in turn calls
the hashcode method(x.equals(y) means x.hashcode==y.hashcode)

List --->in case if u use Vector or ArrayList since both of
them implenets RandomAccessInterface so retrieval is faster
but addition or deletion is slower

LinkedList --->deletion or insertion is faster but does not
implemet RandomAccess interface

Answer / prashanth

list

Answer / kamala

MAP

Answer / r.jainrocks@gmail.com

hi Debapriya,

can u send me some more info on collection...

i.e.

In which kind of application Set is better
In which kind of application Map is better
In which kind of application List is better

just named those kind of applications

thanks in advance...

Answer / pkj

List : storing of data is fast but retrieval is slow.
Map : Stroing of data is slow. But retrieval is slow.
Set : Stroing of data is slow. But retrieval is slow.

Depending on the req the collection can be used

Answer / anand

set

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