Win a copy of The Java Performance Companion this week in the Performance forum!
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic

Array vs Vector

 
Larry Lai
Ranch Hand
Posts: 44
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi everyone,
What's the difference between array and vector?
What's the advantage and disadvantage of them?
thanks
Larry
 
Robert Ziel
Greenhorn
Posts: 28
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
look at the api's '
array cannot get larger vectors can
vector contains objects not primitives..
if you want to store primitives you should use a wrapper etc....
but then again look at the
Api
[ May 21, 2002: Message edited by: Robert Ziel ]
 
Thomas Paul
mister krabs
Ranch Hand
Posts: 13974
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Vectors can only store objects so you always need to cast when you take the object out of the vector. Arrays can be created to hold a specific type of object (Button[] b = new Button[10] . Arrays are almost always faster than vectors. Vectors are synchronized.
 
Cindy Glass
"The Hood"
Sheriff
Posts: 8521
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
"Behind every Vector is a good array"
In real life a Vector is a lot of bells and whistles and functionality around an array.
If you want the functionality provided for you - use Vector and accept the overhead.
If you uses are simple or you want to use primitives without putting them in wrappers - use arrays.
From the source code for Vector:
 
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic