Someone please help and teach me , based on the java source code given , how can i add a feature of "virtual payment transfer "in this program.
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package orderingsystem;
import java.util.Scanner;
public class Orderingsystem {
public static Scanner input = new Scanner(System.in);
public static String again;
public static int choose,quantity=1;
public static double total=0,pay;
public static void menu(){
System.out.println("\t\t\t\t+=======================================+");
System.out.println("\t\t\t\t+ Food Menu +");
System.out.println("\t\t\t\t+ 1. Aloe vera RM 45 +");
System.out.println("\t\t\t\t+ 2. Appple Juice RM 40 +");
System.out.println("\t\t\t\t+ 3. Banana Juice RM 49 +");
System.out.println("\t\t\t\t+ 4. Cancel +");
System.out.println("\t\t\t\t+=======================================+");
}
public static void order (){
System.out.println("Press 1 to Aloe vera ,Press 2 to Appple Juice ,Press 3 to Banana Juice,Press 4 to cancel");
System.out.println("what you want to buy " );
choose= input.nextInt();
if(choose==1){
System.out.println("You choose Aloe vera");
System.out.println("How many Aloe vera you want to buy");
quantity = input.nextInt();
total = total + (quantity*45);
System.out.println("You want to buy again");
System.out.println("Press Y for Yes and N for No :");
again = input.next();
if(again.equalsIgnoreCase("Y")){
order();
}else{
System.out.println("Enter a payment");
pay = input.nextDouble();
if(pay <=total){
System.out.println("Not enough payment");
}else{
total = pay - total;
System.out.println("Total price is"+total);
}
}
}else if(choose==2){
System.out.println("You choose Appple Juice");
System.out.println("How many Appple Juice you want to buy");
quantity = input.nextInt();
total = total + (quantity*40);
System.out.println("You want to buy again");
System.out.println("Press Y for Yes and N for No :");
again = input.next();
if(again.equalsIgnoreCase("Y")){
order();
}
else{
System.out.println("Enter a payment");
pay = input.nextDouble();
if(pay <=total){
System.out.println("Not enough payment");
}else{
total = pay - total;
System.out.println("Total price is"+total);
}
}
}else if(choose==3){
System.out.println("You choose Banana Juice");
System.out.println("How many Banana Juice you want to buy");
quantity = input.nextInt();
total = total + (quantity*49);
System.out.println("You want to buy again");
System.out.println("Press Y for Yes and N for No :");
again = input.next();
if(again.equalsIgnoreCase("Y")){
order();
}
else{
System.out.println("Enter a payment");
pay = input.nextDouble();
if(pay <=total){
System.out.println("Not enough payment");
}else{
total = pay - total;
System.out.println("Total change is = RM "+total);
}
}
}
else if(choose==4){
System.exit(0);//close program
}
else{
System.out.println("Choose 1 to 4 only!");
order();
}
}
public static void main(String[] args) {
menu();
order();
}
}
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