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What will make better efficient?

arun mahajan
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Joined: Dec 07, 2001
Posts: 305
If I write the following class in two style:
Style A:

Style B

Which is better way of decalring xx object and why? or this is soley depend upon the requirement?
[ April 04, 2002: Message edited by: Cindy Glass ]
Corey McGlone
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Joined: Dec 20, 2001
Posts: 3271
It's important to remember that initialization of instance variables is not the same as executing a constructor. In the case you gave, the results would probably be the same either way. However, consider what would happen if you had multiple constructors:

In such a case, it would probably be better to initialize the member xx outside of the constructors because, otherwise, you're simply creating extra code.

SCJP Tipline, etc.
Corey McGlone
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Joined: Dec 20, 2001
Posts: 3271
Just as a side-note, there a many intricacies to initializing a class. Take a look at the JLS, §12.4 Initialization of Classes and Interfaces or do a search in the Programmer Certification Forum to get all sorts of juicy details.
Hope that helps,
I agree. Here's the link:
subject: What will make better efficient?
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