initLog4j
public static void initLog4j(java.io.File file)
Init log4j to write to a file. This is purely optional.
If log4j has already been initialized
this should not be called, although it should have no effect because
it first checks to see if there are existing root logger appenders
before doing anything else.
If there is no log4j configuration in effect already, then log4j will
be initialized to write to the console.