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problem in switch case

Nittin singla
Greenhorn

Joined: Jul 02, 2011
Posts: 24
In the following code, final int is considered as a constant but final Integer isnt considered so...So it results in a compile time error...Acc to me, final Integer is also a constant..Can someone please tell em the reason why compile time error comes?
John Jai
Bartender

Joined: May 31, 2011
Posts: 1776
Nittin singla wrote:but final Integer isnt considered so...So it results in a compile time error...

Can you tell how you think it's not considered and wat is the error you receive
John Jai
Bartender

Joined: May 31, 2011
Posts: 1776
Sorry nitin - i deciphered your question wrongly. Case does not allow wrapper ( or any other object). only primitives
Henry Wong
author
Sheriff

Joined: Sep 28, 2004
Posts: 18507
    
  40

Nittin singla wrote:In the following code, final int is considered as a constant but final Integer isnt considered so...So it results in a compile time error...Acc to me, final Integer is also a constant..Can someone please tell em the reason why compile time error comes?


In addition to John's answer, a constant, specifically a compile time constant, is defined by the Java Language Specification. And in the current version of the specification, Integer instances are not to be considered as compile time constants.

Henry

Books: Java Threads, 3rd Edition, Jini in a Nutshell, and Java Gems (contributor)
Rob Spoor
Sheriff

Joined: Oct 27, 2005
Posts: 19649
    
  18

Currently, Strings are the only non-primitive compile-time constants.


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