Run ant task in different jvm

Question

Our ant build is run using Java 1.7.0 for JAVA_HOME. This way javac and all other Java dependent targets use the correct Java by default.

But 1 ant target from an ex

Answer 1

To make Jeanne Boyarsky's suggestion of using the exec Ant task concrete, the following example wraps the exec task in a macro to simplify calling targets with various JVMs. Notice that the JVM is set using the Ant environment variable JAVACMD.

Example Project

Output

test:
     [exec] Buildfile: /home/your/project/build.xml
     [exec] 
     [exec] echo-java-version:
     [exec]      [echo] Java version: 1.7.0
     [exec] 
     [exec] BUILD SUCCESSFUL
     [exec] Total time: 0 seconds
     [exec] Buildfile: /home/your/project/build.xml
     [exec] 
     [exec] echo-java-version:
     [exec]      [echo] Java version: 1.6.0
     [exec] 
     [exec] BUILD SUCCESSFUL
     [exec] Total time: 0 seconds

BUILD SUCCESSFUL
Total time: 2 seconds