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Re: Java Error on startup of App
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Re: Java Error on startup of App


  • Subject: Re: Java Error on startup of App
  • From: Patrick Middleton <email@hidden>
  • Date: Tue, 30 May 2006 12:14:38 +0100


On 30 May 2006, at 11:43, Gino Pacitti wrote:

Hi All

I have been running an app on Tiger server + latest Webobjects run environment and recently updated development to the latest XCode 2.3

Now I have tried to build an existing running app and when I try to start it I get a error - this runs on the client but problem is when I upload to the server:

java.lang.UnsupportedClassVersionError: Application (Unsupported major.minor version 49.0)


Any ideas what this could be?

Gino

The JVM on the target machine has encountered a classfile in JDK 1.5 format. This most likely means you built using the JDK 1.5 compiler, which became the default after a recent software update, and the machine on which you are trying to deploy is still using the 1.4.2 JRE. Since WebObjects has not (yet?) been qualified for Java 5, you are best off rebuilding using JDK 1.4*, see also http:// docs.info.apple.com/article.html?artnum=75505 , as per Cliff Tuel's email "Re: Java 1.5 & WO?' of Tue, 25 Apr 2006 16:07:21 -0700 (PDT).


-- Patrick

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  • Follow-Ups:
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      • From: Gino Pacitti <email@hidden>
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      • From: "Wiktor Moskwa" <email@hidden>
References: 
 >Java Error on startup of App (From: Gino Pacitti <email@hidden>)

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