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Vector , Map ,set

Indu mathy

Joined: Jun 08, 2000
Posts: 8
Can anyone help me on how does vector,Map,set classes work on.
A detail explaination is needed

Ranch Hand

Joined: Nov 22, 2008
Posts: 18944
hi Indu,
what ever i know regarding vector,set and Map. to my knowlede,
hope so they are almost correct.
vector - this is class implementing from list interface,and can
increase size dynamically ,this is safe in use of threads as it supports for synchronization.this will give U in order(not soreted).allows duplicate of elements.
Set is an interface extending from Collection interface,doesnot allow duplicacy of elements.and this was not ordered.(it allow
a null value i think this is not sure).
Map is an interface ,which has both keys and values .
keys are not allowed for duplication,but values are allowed.
(null key and null value are allowed i think ).this is not ordered.but this is mainly used for fast retrival of data.
hope this can understand u, a litle more knowledge is reqired
that is also i was looking for.
for a specific key U get corresponding value.
Indu mathy

Joined: Jun 08, 2000
Posts: 8
will there be questions on Vector,Map and Set in Java2 exam
I agree. Here's the link:
subject: Vector , Map ,set
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