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Sunday, 15 January 2012

JAVA : Difference between Vector and ArrayList?

Vector :
  1.               It's synchronized.
  2.               It's slower than ArrayList.
  3.               It's generally used in multithreading programs.

ArrayList :
  1.               It's unsynchronized.
  2.               It's faster than Vector.
  3.               It's generally used in single-thread programs.

14 Responses to “ JAVA : Difference between Vector and ArrayList? ”

chmod examples unix said...
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

Anonymous said...
15 April 2012 at 04:44

Nicely written

anij said...
15 April 2012 at 08:51

Thanks a lot my friend!!
thanks for commenting!!

Anonymous said...
27 April 2012 at 00:07

ArrayList does allow null. Stop posting wrong information.

Anonymous said...
8 May 2012 at 10:44

Vector is a part of collection frame work please go the 1.3 documentation of Oracle.

kuldeep said...
10 September 2012 at 03:27

we can specify the increment size with the vector and with arraylist we can't.

Hashtable vs HashMap said...
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

Anonymous said...
1 July 2014 at 15:20

It is introduced in java 1.2
It is thread safe
It is introduced in java 1.5
It is not thread safe

Arunava Saha said...
17 July 2014 at 10:04

One more -
Arraylist is more memory effective than vector because of the difference between their load factor.
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 )

Vikas said...
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.

Naviya Nair said...
24 October 2016 at 15:11

I have read your blog its very attractive and impressive. I like it your blog.

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