question: public static void expandReal ( String numberString , WordRelation wordRelation , Item tokenItem ) { int stringLength = numberString . length ( ) ; int position ; if ( numberString . charAt ( 0 ) == '-' ) { wordRelation . addWord ( tokenItem , "minus" ) ; expandReal ( numberString . substring ( 1 , stringLength ) , wordRelation , tokenItem ) ; } else if ( numberString . charAt ( 0 ) == '+' ) { wordRelation . addWord ( tokenItem , "plus" ) ; expandReal ( numberString . substring ( 1 , stringLength ) , wordRelation , tokenItem ) ; } else if ( ( position = numberString . indexOf ( 'e' ) ) != - 1 || ( position = numberString . indexOf ( 'E' ) ) != - 1 ) { expandReal ( numberString . substring ( 0 , position ) , wordRelation , tokenItem ) ; wordRelation . addWord ( tokenItem , "e" ) ; expandReal ( numberString . substring ( position + 1 ) , wordRelation , tokenItem ) ; } else if ( ( position = numberString . indexOf ( '.' ) ) != - 1 ) { String beforeDot = numberString . substring ( 0 , position ) ; if ( beforeDot . length ( ) > 0 ) { expandReal ( beforeDot , wordRelation , tokenItem ) ; } wordRelation . addWord ( tokenItem , "point" ) ; String afterDot = numberString . substring ( position + 1 ) ; if ( afterDot . length ( ) > 0 ) { expandDigits ( afterDot , wordRelation , tokenItem ) ; } } else { expandNumber ( numberString , wordRelation , tokenItem ) ; } }
target:  Expands the given number string as a real number.