Question

I need help writing the code for a GUI calculator that uses 4 Radio Buttons (+. -, * , /). Only one button can be selected at a time. I also have to group the buttons for this i am importing the ToggleGroup and using that. The user also need to select one function to begin with or an "Error" message will show if they select the calculate button. I would really like to know what needs to be used to make the buttons functional to and have a result when the calculate button is selected. setOnAction seems to be of importance I am just not sure where to use it. Please note that the radio buttons have no initial selection but once a user makes a choice only one option is available.

No java.awt, javax.swing, or JOptionPane

also no extending of another class.

Thanks.

Answer 1

t version tue Dec 2014 矢 printe TTome hame: private Jtabef tota Piate Telotkbor dis ount prate ト@ Pavan catatng to ,3padu脇 catalog to une a pra catalog Janut 岆 1 C cotolog) croate conpoenA

arapicar compren tv to@u.de%,thiomba Pivata voiol Creata. componenti t rhbel to diplay upate tokal ) A卬,rmg a bulk discount the entive 3h0ppin private vois ypate tat

private sktie voYa center (tlarleo wee oot k g faut TodkC).gef Deea ise cy Dimen Scroe 자궁P , s at otic priate Jtert pietd text Field Pub tic det layout toenj Howo

label :np Goldl (text Fied) a d d tlabet upthtec): textpiel d e text (tex) ant quanti ty0 quantity-Fateae·parent t tear); Purdaie dareれHall) tex Fie

Answer 2

t version tue Dec 2014 矢 printe TTome hame: private Jtabef tota Piate Telotkbor dis ount prate ト@ Pavan catatng to ,3padu脇 catalog to une a pra catalog Janut 岆 1 C cotolog) croate conpoenA

arapicar compren tv to@u.de%,thiomba Pivata voiol Creata. componenti t rhbel to diplay upate tokal ) A卬,rmg a bulk discount the entive 3h0ppin private vois ypate tat

private sktie voYa center (tlarleo wee oot k g faut TodkC).gef Deea ise cy Dimen Scroe 자궁P , s at otic priate Jtert pietd text Field Pub tic det layout toenj Howo

label :np Goldl (text Fied) a d d tlabet upthtec): textpiel d e text (tex) ant quanti ty0 quantity-Fateae·parent t tear); Purdaie dareれHall) tex Fie