I\'m using Ant 1.7.0 and installed java 1.6 which is in JAVA_HOME.
I want to build a project using java 1.5, so I\'ve exported JAVA_HOME to be my java 1.5 directory.
According to the Ant Documentation, set JAVACMD environment variable to complete path to java.exe of the JRE version that you want to run Ant under.
JAVACMD
java.exe