question: private static String addQuotes ( String s ) { int n = s . length ( ) ; int i ; char c ; StringBuffer result = new StringBuffer ( n + 2 ) ; result . append ( '\"' ) ; for ( i = 0 ; i < n ; ++ i ) { c = s . charAt ( i ) ; if ( c == '\"' ) { result . append ( '\\' ) ; } result . append ( c ) ; } result . append ( '\"' ) ; return result . toString ( ) ; }
target:  Returns a version of the string surrounded by quotes and with interior quotes preceded by a backslash.