Buildfile: E:\HelloWorld\build.xml
prepare:
   [delete] Deleting directory E:\HelloWorld\build
    [mkdir] Created dir: E:\HelloWorld\build
compile:
    [javac] Compiling 3 source files to E:\HelloWorld\buildBUILD FAILED
E:\HelloWorld\build.xml:22: 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.
It is currently set to "C:\Program Files\Java\jre6"