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Main.class
import java.util.Scanner;
public class Juice_ordering {
public static void main(String [] args){
Food[] foodArray = new Food[4];
foodArray[0] = new Juice("Apple","C01",5.00, "Which is very popular juice in our shop.","Apple",1);
foodArray[1] = new Juice("Orange","I02",8.00, "Which is very popular juice in our shop.","Orange",2);
foodArray[2] = new Snack("Cheez-It","SC001",15.00, "Which is very popular juice in shop.","tin","small");
foodArray[3] = new Snack("Cheez-It","SC002",18.00, "Nice snack.","tin","medium");
boolean loopagain = true;
while(loopagain){
System.out.println("1.\t Display Food");
System.out.println("2.\t Order Food");
System.out.println("3.\t Add Food");
System.out.println("4.\t Delete Food");
System.out.println("0.\t To Exit");
double total=0;
Scanner in = new Scanner(System.in);
System.out.println("Please enter your choice:");
int choice=in.nextInt();
switch (choice) {
case 1:
System.out.println("1.\t Display Fruit Juice Order");
System.out.println("2.\t Display Snack Order");
System.out.println("Please enter your choice:");
Scanner on = new Scanner(System.in);
int food_choice=on.nextInt();
switch(food_choice){
case 1:displayJuice(foodArray);
break;
case 2:displaySnack(foodArray);
}
break;
case 2:Scanner ordercode = new Scanner(System.in);
System.out.println("Enter the Food Code that wanted to order:");
String code = ordercode.nextLine();
double price=orderprocess(foodArray,code);
if (price == -1)
System.out.println("Invalid Order Code");
else
System.out.println("Price =Rm " +price +"\n");
total+=price;
break;
case 3:Scanner addcode = new Scanner(System.in);
System.out.println("Enter the Food Code that wanted to add order:");
String add = addcode.nextLine();
double addprice=addorderprocess(foodArray,add);
if (addprice == -1)
System.out.println("Invalid Order Code");
else
System.out.println("Price =Rm " +addprice +"\n");
total+=addprice;
break;
case 4: Scanner dltcode = new Scanner(System.in);
System.out.println("Enter the Food Code that wanted to delete order:");
String dlt = dltcode.nextLine();
double dltprice=dltorderprocess(foodArray,dlt);
if (dltprice == -1)
System.out.println("Invalid Order Code");
else
System.out.println("You have delete an item");
total-=dltprice;
break;
case 0: System.out.println("Bye");
loopagain=false;
break;
default: System.out.println("Invalid choice");
}
}
}
public static void displayJuice(Food[] foodArray){
for (int i = 0; i < foodArray.length; ++i) {
if (foodArray[i] instanceof Juice){
System.out.println("\nJuice\n============");
System.out.println(foodArray[i]);
}
}
}
public static void displaySnack(Food[] foodArray){
for (int i = 0; i < foodArray.length; ++i) {
if (foodArray[i] instanceof Snack){
System.out.println("\nSnack\n============");
System.out.println(foodArray[i]);
}
}
}
public static double orderprocess(Food[] foodArray,String code){
for (int i = 0; i < foodArray.length; ++i) {
if(foodArray[i].getcode().compareTo(code)==0){
return foodArray[i].getprice();
}
}return -1;
}
public static double addorderprocess(Food[] foodArray,String add){
for (int a = 0; a < foodArray.length; ++a) {
if(foodArray[a].getcode().compareTo(add)==0){
return foodArray[a].getprice();
}
}return -1;
}
public static double dltorderprocess(Food[] foodArray,String dlt){
for (int b = 0; b < foodArray.length; ++b) {
if(foodArray[b].getcode().compareTo(dlt)==0){
return foodArray[b].getprice();
}
}return -1;
}
}
Snack.class
public class Snack extends Food{
private String packing;
private String size;
public Snack(){
}
public Snack(String name, String code, double price,String description ,String packing,String size ){
super(name, code,price,description);
this.packing= packing;
this.size= size;
}
public String toString(){
return super.toString() + "\nPacking: " + packing + "\nSize: " + size;
}
}
Juice.class
public class Juice extends Food{
private String flavor;
private int cup ;
public Juice(){
}
public Juice(String name, String code, double price,String description, String flavor,int cup){
super(name,code,price,description);
this.flavor = flavor;
this.cup = cup;
}
public String toString(){
return super.toString() + "\nFlavor: " + flavor+ "\nCup: " + cup;
}
}
Food.class
public abstract class Food{
private String name;
private String code;
private double price;
private String description;
public Food(){
}
public Food(String name ,String code,double price,String description){
this.name = name ;
this.code = code ;
this.price = price ;
this.description =description ;
}
public void setname(String name){
this.name = name;
}
public void setcode(String code){
this.code = code;
}
public void setprice(Double price){
this.price = price;
}
public void setdescription(String description){
this.description = description;
}
public String getname(){
return name;
}
public String getcode(){
return code;
}
public Double getprice(){
return price;
}
public String getdescription(){
return description;
}
public String toString(){
return "Name: " + name + "\nCode: " + code + "\nPrice: " + price + "\nDescription: " + description;
}
}
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