Sorted - i didn't have the bcel.jar in my lib folder. Added it and it
works fine. 

Sooooooooooo - Nicolas, *if* you have bcel.jar installed, you can use
the example below to get your version string out of your file!

(but you shouldn't ;)

/t 

>-----Original Message-----
>From: RADEMAKERS Tanguy 
>Sent: Tuesday, September 20, 2005 8:26 PM
>To: 'Ant Users List'
>Subject: RE: Extracting application version from Java file
>
>Hello List,
>
>I was going to reply to Nicolas that, whilst i agree with the 
>other two replies (you should pass the version in somehow and 
>not read it from the java source file), you *can* achieve what 
>he is trying to do using the <loadproperties> task with a 
>nested <classconstants> filterchain. But i can't seem to get 
>it to work. I've posted my example below, can anybody see what 
>i'm doing wrong?
>
>------mytest.java----
>public class mytest
>{
>   public static final String VERSION = "XX.YY.ZZ";
>
>   public static void main(String[] args)
>   {
>      System.out.println("Hello, World!");
>   }
>}
>
>------build.xml----
><project name="test" default="main" basedir=".">
>
>    <target name="main">
>
>        <javac srcdir="." 
>               destdir="." 
>               includes="mytest.java"/>
>       
>        <loadproperties srcfile="mytest.class">
>            <filterchain>
>                <classconstants/>
>            </filterchain>
>        </loadproperties>
>
>        <echo>${VERSION}</echo>
>
>    </target>
>
></project>
>
>i get a "Unable to load file: java.io.IOException" message. 
>I've tried putting a static properties file and loading that - 
>no probs. I've tried copying the class to a properties file by 
>using the classconstants filterchain... didn't work (same error). 
>
>/t

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