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

@param format the message format string
@param param1 the sole parameter