Eclipse: no output to the console when run ant build

Solution:

to get the output in console. you should change the JRE option in the "Edit configuration and launch" for Ant run as to Run in same JRE as the workspace.

Refer to:
http://help.eclipse.org/juno/index.jsp?topic=%2Forg.eclipse.jdt.doc.user%2Freference%2Fviews%2Fdebug%2Fref-editlaunchconfig.htm  for instructions on how to open the "Edit Configuration and Launch".