Question

Design a phone purchase program in JOptionPane.

Select model ( can be made up 2 models minimum)

Color selection( 2 options minimum)

Storage Selection( 2 options minimum)

Accessories (2 options minimum)

Payment Plan or one time purchase

Prices can be made up

Print out price. Allow user termination. Create a class and test programs.

Answer 1

Code:

import java.util.ArrayList;
import javax.swing.JOptionPane;
class market {
 public static void main(String[] args) {

    int MenuList;  
    String myOrder = "No order currently set";     //if no any item purchsed then print this message 
        do{  
                System.out.println("---MENU---");
                //here there are 3 options availabel 1 is for purchase 2 is for print purchased order 3 is for exit  
                String[] menu = {"[1]Purchase Phone","[2]print","[3]exit"};  
                        
                for (int i=0;i<3;i++) {    //display 3 options in command prompt
                        System.out.println(menu[i]);
                }

                String MenuString = JOptionPane.showInputDialog(null, " Choose number: ");   //get selected option
                MenuList = Integer.parseInt(MenuString);

                int price = 0;
                if(MenuList==1) {       //if option is 1 then go for purchase program
                        System.out.println();
                        String[] model = {"iPhone11","iPhone12"};
                        String[] color = {"Red","Black","Green"};
                        String[] storage = {"64GB","128GB"};
                        String[] acc = {"Airpods","Covor"};
                        String[] payment = {"Cash","Card"};

                        myOrder = "";
                        
                        //here you can choose one by one options first you have to select model then color then storage then accessories then payment option
                        String Model = (String) JOptionPane.showInputDialog(null,"Select Model", "Welcome " +  "!",JOptionPane.QUESTION_MESSAGE, null, model, "iPhone11");
                        String Color = (String) JOptionPane.showInputDialog(null,"Select Color","",JOptionPane.QUESTION_MESSAGE, null, color, "Black");
                        String Storage = (String) JOptionPane.showInputDialog(null,"Select Storage","",JOptionPane.QUESTION_MESSAGE, null, storage, "64GB");
                        String Acc = (String) JOptionPane.showInputDialog(null,"Select Accessories ","",JOptionPane.QUESTION_MESSAGE, null, acc, "Covor");
                        String pay = (String) JOptionPane.showInputDialog(null,"Select payment method","",JOptionPane.QUESTION_MESSAGE, null, payment, "Cash");
                        
                        //here it calculate total price of item
                        if(Model=="iPhone11")
                                price+=50000;
                        else
                                price+=60000;   
                        if(Storage=="64GB")
                                price+=5000;
                        else
                                price+=8000;
                        if(Acc=="Airpods")
                                price+=5000;
                        else
                                price+=500;
                        
                        //for display a selected options and total price of item
                        myOrder="Your model is: "+Model+"\nYour Color is: "+Color+"\nYour Storage is: "+Storage+"\nYour Accessories is: "+Acc+"\nYour Payment method is: "+pay;
                        myOrder+="\n\nYour total price is: "+price;
                } else if(MenuList==2) {      //if option is 2 then and any item is purchased then print purchased item otherwise print default message
                        JOptionPane.showMessageDialog(null,myOrder);
                } else if(MenuList==3) {
                        JOptionPane.showMessageDialog(null,"Exit,Bye");   //if option is 3 selected then exit
                } else {
                        System.out.print("Invalid");
                }
        }while(MenuList != 3);   //it go untill you select option 3
 }
}

Output:

It display 3 option. then if you want go for purchase program then enter 1.

Then enter 2 for print select item and price.

Then enter 3 for exit.