question: public String toStringMatrix ( ) { StringBuffer result ; String [ ] [ ] cells ; int i ; int n ; result = new StringBuffer ( ) ; cells = toArray ( ) ; for ( i = 0 ; i < cells . length ; i ++ ) { for ( n = 0 ; n < cells [ i ] . length ; n ++ ) { if ( n > 0 ) result . append ( "," ) ; result . append ( Utils . quote ( cells [ i ] [ n ] ) ) ; } result . append ( "\n" ) ; } return result . toString ( ) ; }
target:  returns the matrix in CSV format.