Thanks Steve, and Jim Idle who replied off-list. I guess I'll have to stick to 
Antlr v2 until my project drops the JDK 1.4 requirement. Messing around with 
retro-weaver sounds dubious and I need to restrict my third-party dependencies.

-----Original Message-----
From: Steve Ebersole [mailto:steven.ebers...@gmail.com] On Behalf Of Steve 
Ebersole
Sent: August 31, 2009 6:26 PM
To: Gordon Tyler
Cc: antlr-inter...@antlr.org
Subject: Re: [antlr-interest] Using Antlr v3 with JDK 1.4

I ran into the same issue when first looking at Antlr3.  I was told the
intention was to not have the Antlr runtime rely on JDK 1.5; but
unfortunately some JDK 1.5 features ended up getting exposed.  

The outcome of my queries, iirc, was that it would just remain JDK 1.5
compatible.  You could probably use a retro-weaver though to make it 1.4
compatible.  Did not try...


On Mon, 2009-08-31 at 14:25 -0700, Gordon Tyler wrote:
> Is it possible to use the Antlr v3 runtime with JDK 1.4? I’m getting
> this error when compiling generated parser code using JDK 1.4, which
> indicates that the runtime is compiled with JDK 1.5:
> 
>  
> 
> NewTransformLexer.java:11: cannot access org.antlr.runtime.Lexer
> 
> bad class file: lib
> \antlr-runtime-3.1.3.jar(org/antlr/runtime/Lexer.class)
> 
> class file has wrong version 49.0, should be 48.0
> 
>  
> 
> Is it just a matter of a recompile of the runtime or does the runtime
> use Java 5 features?
> 
>  
> 
> Thanks,
> 
> Gordon
> 
>  
> 
> ---
> 
> Gordon Tyler (Software Developer)
> 
> Quest Software <http://www.quest.com/>
> 
> 260 King Street East, Toronto, Ontario M5A 4L5, Canada
> 
> Voice: (416) 933-5046 | Fax: (416) 933-5001
> 
>  
> 
> 
> List: http://www.antlr.org/mailman/listinfo/antlr-interest
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-- 
Steve Ebersole <st...@hibernate.org>
Hibernate.org


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