Re: Strange Error (help please)

Hi,

Michael Deninger wrote:
> Hi,
> 
> I have been developing an app under MacOS X 10.4 and am trying to  
> deploy on MacOS X Server 10.2.8.
> 
> Most everything works properly with one exception (literally) as  follows:
> 
> com.webobjects.foundation.NSForwardException  
> [java.lang.NoSuchMethodError]  
> com.webobjects.foundation.NSMutableArray.contains(Ljava/lang/Object;)Z
> 
> The exception only occurs upon the deployment server on one specific  
> component page. The exception gives no additional information and the  
> log files don't show anything either.
> 
> The only difference I can see between the machines (from a java  
> standpoint) is:
> 
> Server:$ java -version
> java version "1.4.1_01"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1_01-69.1)
> Java HotSpot(TM) Client VM (build 1.4.1_01-24, mixed mode)
> 
> Development Machine $ java -version
> java version "1.4.2_09"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_09-232)
> Java HotSpot(TM) Client VM (build 1.4.2-54, mixed mode)
> 
> which is not significant as far as I know. The applications runs fine  
> under the development environment.
> 
> Can anyone enlighten me with respect to this? The component in  question 
> is not doing anything my other components don's successfully  do!
> 
> Regards,
> 
> Michael Deninger RPh. Ph.D.
> Partner, Towncrest Pharmacy
> 2306 Muscatine Ave.
> Iowa City, IA 52240
> Ph: 319 337-3526
> Fax: 319 337-5271
> [email protected]
> 
> 


The error is saying that NSMutableArray and its superclasses do not 
implement the contains(Object o) method.

Looking at the api for WO 5.2.3 there is a containsObject(Object o) 
method in the class hierachy of NSMutableArray but no
contains(Object o).

Looking at,

http://developer1.apple.com/documentation//WebObjects/Reference/API/changes.html

Says that in 5.2.4 the interface for java.util.List has been added to 
NSArray, which does have a contains(Object o) method.

Therefore, I would guess that you are developing using the jars from WO 
5.2.4 and deploying on < 5.2.4.

cheers,
  - shaun