import compiler settings when build Ant java project via cmd

[dror]

Hi all,
Im looking for a way to import a compiler's preferences, when i build an Ant java project via command line.
For example: i need to set compiler's preferences like this:
unusedObjectAllocation=warning
redundantNullCheck=warning
unusedDeclaredThrownException=warning
fallthroughCase=error
It's possible to import a preferences file ( .epf ) via Eclipse, but how can i do this Ant project's building via command line? somebody know? Thanks, Dror.