question: public static String toString ( Object [ ] objects , Displayable renderer ) { if ( objects == null ) return "" ; StringBuffer buffer = new StringBuffer ( 10 ) ; for ( int i = 0 ; i < objects . length ; i ++ ) { if ( i > 0 ) buffer . append ( ", " ) ; buffer . append ( renderer . displayString ( objects [ i ] ) ) ; } return buffer . toString ( ) ; }
target:  Converts an array of Objects into String. 