do stage3 add the functionality

do stage3 add the functionality


add Actionliseners


add exceptions


add binary file to store and read from


You can not use JavaFX .


You can not use Scene Builder


you can not use FXML


you can not use absoulte layout


you can add/delete component and windows but change the general look of them only if you think its better


you can only use what is in the slides and the book


for the files the program should store all of the user information


in the last window (checkout) if the user clicks on pay the total amount of his order should be collect it,and if the user clicks on (order information) his order information should be read from the file


note: in stage one the classes discription is not updated

do stage3 add the functionality

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