Why does ANT tell me that JAVA_HOME is wrong when it is not?

Question

I get the error:

C:\\dev\\ws\\springapp\\build.xml:81: Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not

Answer 1

It is common to get this issue. I cannot set any specific Java home in my system as I have 2 different version of Java (Java 6 and Java 7) for different environment. To resolve the issue, I included the JDK path in the run configuration when opening the build.xml file. This way, 2 different build files use 2 different Java version for build. I think there might be a better solution to this problem but at least the above approach avoid setting the JAVA_HOME variable.