title: How can I configure a Hudson job to use a specific JDK?
body: <p>I have a number of projects running on a Hudson slave. I'd like one of them to run Ant under Java6, rather than the default (which is Java5 in my environment).</p>
  
  <p>In the project configuration view, I was hoping to find either:</p>
  
  <ul>
  <li>An explicit option allowing me to set a custom JDK location to use for this project.</li>
  <li>A way to set custom environment variables for this project, which would allow me to set 
  JAVA_HOME to the JDK6 location. The would make Ant pick up and run on Java6 as desired.</li>
  </ul>
  
  <p>Is there a way to do either of the above? If one of those facilities is available, I can't see how to access it. I'm running on Hudson 1.285.</p>
  
  <p>I would rather avoid using an "execute shell" operation instead of the "invoke Ant" operation if possible: my slave is on z/OS and Hudson doesn't seem to create the temporary shell scripts properly on this platform (probably an encoding issue).</p>