public void errorf(Throwable t, String format, Object... params) {
        doLogf(Level.ERROR, FQCN, format, params, t);
    }
public void errorf ( Throwable t , String format , Object ... params ) { doLogf ( Level . ERROR , FQCN , format , params , t ) ; }
Issue a formatted log message with a level of ERROR.

@param t the throwable
@param format the format string, as per {@link String#format(String, Object...)}
@param params the parameters