Sunday, 15 January 2012
JAVA : Difference between Vector and ArrayList?
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Vector :
ArrayList :
- It's synchronized.
- It's slower than ArrayList.
- It's generally used in multithreading programs.
ArrayList :
- It's unsynchronized.
- It's faster than Vector.
- It's generally used in single-thread programs.
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24 Responses to “ JAVA : Difference between Vector and ArrayList? ”
28 March 2012 at 09:38
Good differences, nicely put in point format. another one is that vector was not member of collection framework prior to JDK 1.4 and later retrofitted into Collection API. see here for more differences between Vector and ArrayList
15 April 2012 at 04:44
Nicely written
15 April 2012 at 08:51
@Anonymous
Thanks a lot my friend!!
thanks for commenting!!
27 April 2012 at 00:07
ArrayList does allow null. Stop posting wrong information.
8 May 2012 at 10:44
Vector is a part of collection frame work please go the 1.3 documentation of Oracle.
10 September 2012 at 03:27
we can specify the increment size with the vector and with arraylist we can't.
27 September 2012 at 10:11
One more difference between ArrayList vs Vector is that later is a legacy class and initially not part of Collection API
1 July 2014 at 15:20
vector:
It is introduced in java 1.2
It is thread safe
ArrayList:
It is introduced in java 1.5
It is not thread safe
17 July 2014 at 10:04
One more -
Arraylist is more memory effective than vector because of the difference between their load factor.
Explanation:
Load Factor of Vector is 2 * old_value, means if a vector is sized 10 and it needs to re-size then it will be re-sized to 20 (2 * 10).
whereas load factor of ArrayList is (3 * old_value) / 2 + 1, means if an arraylist is sized 10 and needs to re-size then it will be re-sized to 16 ( (3*10) / 2 + 1 )
13 June 2015 at 22:11
There is one more option instead of vector, synchronized ArrayList, its better because Vector is too old and can be deprecated.
28 July 2018 at 17:21
uperb explanation & it's too clear to understand the concept as well, keep sharing admin with some updated information with right examples.Keep update more posts.java training
29 May 2019 at 11:03
Thanks for sharing this post.
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19 April 2020 at 19:36
Thanks for sharing the information between vector and arraylist, I want to Hire Java Developers for my newly settled organization. This difference will help during the interview of any developer's.
14 October 2021 at 17:17
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29 December 2021 at 12:19
Such a great blog! I am looking for these kinds of blogs for last many days. Keep it up. Thanks for sharing it with us
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