public void warnv(String format, Object param1, Object param2, Object param3) {
        if (isEnabled(Level.WARN)) {
            doLog(Level.WARN, FQCN, format, new Object[] { param1, param2, param3 }, null);
        }
    }
public void warnv ( String format , Object param1 , Object param2 , Object param3 ) { if ( isEnabled ( Level . WARN ) ) { doLog ( Level . WARN , FQCN , format , new Object [ ] { param1 , param2 , param3 } , null ) ; } }
Issue a log message with a level of WARN using {@link java.text.MessageFormat}-style formatting.

@param format the message format string
@param param1 the first parameter
@param param2 the second parameter
@param param3 the third parameter