Diffrence between arraylist and hashmap

Question Posted / anuradha

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Diffrence between arraylist and hashmap..

Answer / srikanth

arraylist is used for storing collection of elements with
duplicates
they can store only keys
it is extending list interface

hashmap
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hashmap is used for storing collection of elements with key
value pair without duplicates in unordered way

it is extending map interface

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6 Yes

0 No

Diffrence between arraylist and hashmap..

Answer / srikanth

Arraylist is an ordered collection.of objects
they store their elements in index.rotation
Duplicate values are also allowed.
they show their elements in order ie... added order

But in hashmap is also ordered collection but don't contain
duplicate values.
Hashmap use key value for any object access.
hashmap allow null values

Is This Answer Correct ?

3 Yes

2 No

Diffrence between arraylist and hashmap..

Answer / billuyadav208

Arraylist is an ordered collection.
User access elements by their interger index.
Duplicate values are also allowed.
But in hashmap is also ordered collection but don't contain
duplicate values.
Hashmap use key value for any object access.

Is This Answer Correct ?

4 Yes

4 No

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