code: @Override
  	public void printf(String fmt, Object ... vars) {
  		if(log.isLoggable(level)) {
  			log.log(level,String.format(fmt,vars));
  		}
  	}
docs: /* (non-Javadoc)
  @see com.att.inno.env.LogTarget#printf(java.lang.String, java.lang.String[])