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From "Martin Gainty" <>
Subject RE: ant can't find javac compiler
Date Thu, 22 Sep 2005 11:50:00 GMT
2 things that I would look for

move "$JAVA_HOME\bin" to front of $PATH

make sure your JRE and JDK(SDK) are the same version
javac -version
java -version
SHOULD report the same version

Anyone else ???

Martin Gainty
(mobile) 617-852-7822

>I am using ant to compile my struts webapp. I am using Linux 2.4.27 and 
>running ant (1.5.2-26) from my shell which is bash. My environment 
>variables which I set in my .bash_profile are:
>Here is my problem. When I compile my classes using the default compiler 
>for my system (kjc) I get this error:
>error: Can't find default package `java.lang'. Check the CLASSPATH 
>environment variable and the access to the archives
>Which I can live with (even though my CLASSPATH variable is probably 
>correct) since I really ought to be using the jdk1.5.0_02 compiler. If I 
>set the compiler attribute of <javac> task in my build.xml to modern, it 
>should use the javac compiler that comes with my JDK. When I do I get this 
>Unable to find a javac compiler;
> is not on the classpath.
>Perhaps JAVA_HOME does not point to the JDK
>If I run the javac command manually from the command prompt, something like 
>javac -cp MY/VERY/LONG/CLASSPATH/ src/uk/co/webotech/myproject/
>It compiles fine... By the way, typing "which javac" in my shell returns 
>/usr/java/jdk1.5.0_02/bin/javac. How can I get ant to find javac?
>Any help with this would be greatly appreciated!
>Paul Mackinlay (PhD, MEng)
>Tel: +44(0)7050 699971
>Fax: +44(0)7050 699972
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