javac problem compiling a new .deb

[Paolo Ariano <paolo.ariano@unito.it>]

Hi *

i'm trying to pack a new .deb based on java software but the dpkg-build 
return me:

cd source && /usr/java/jdk1.5.0_01/bin/java -classpath 
/usr/share/ant1.6/lib/ant.jar:/usr/share/ant1.6/lib/ant-launcher.jar  
-Dant.home=/usr/share/ant1.6 org.apache.tools.ant.Main 
-Dcompile.debug=true -Dcompile.optimize=true  build
Buildfile: build.xml

compile:
   [mkdir] Created dir: /home/paolo/Devel/imagej-1.33/source/build
   [javac] Compiling 221 source files to 
/home/paolo/Devel/imagej-1.33/source/build

BUILD FAILED
/home/paolo/Devel/imagej-1.33/source/build.xml:9: Unable to find a javac 
compiler;
com.sun.tools.javac.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK

Total time: 4 seconds
make: *** [debian/stamp-ant-build] Error 1
____________________________________________________________________________________________

can't understand were is the problem i've installed sun-j2sdk1.5debian 
and all
seems to be ok /usr/bin/java and javac in my debian/rules there is:

#!/usr/bin/make -f
# debian/rules for imagej (uses CDBS)

# Uncomment this to turn on verbose mode.
export DH_VERBOSE=1

include /usr/share/cdbs/1/rules/debhelper.mk
include /usr/share/cdbs/1/class/ant.mk
include /usr/share/cdbs/1/rules/simple-patchsys.mk

DEB_BUILDDIR                    := source
DEB_ANT_BUILD_TARGET := build
#JAVA_HOME                      := /usr/java/jdk1.5.0_01
#JAVA_HOME_DIRS               := /usr/java/jdk1.5.0_01
JAVACMD                             := /usr/bin/java
ANT_HOME                          := /usr/share/ant1.6
DEB_CLASSPATH               := 
$(ANT_HOME)/lib/ant.jar:$(ANT_HOME)/lib/ant-launcher.jar

common-install-impl::
   /usr/bin/install -m 644 $(DEB_BUILDDIR)/ij.jar \
     debian/imagej/usr/share/java/
   /usr/bin/install -m 755 debian/imagej.sh \
     debian/imagej/usr/bin/imagej
___________________________________________________________________________________________


and the build.xml contain:

<project name="ImageJ" default="run">

 <target name="compile" description="Compile everything.">
   <!-- First, ensure the build directory exists. -->
   <mkdir dir="build" />
   <!-- Build everything; add debug="on" to debug -->
   <javac srcdir="." destdir="build" optimize="on" debug="on" target="1.1">
     <!-- The plugins directory only needs to be present at runtime,
          not at build time. -->
     <exclude name="plugins/*" />
   </javac>
 </target>

can't understand where is the problem
thanks
paolo