Question

Java Code. imagine you're working for a fast-food restaurant. get details returns name of the burger and getPrice return the price of the meal.

Using Decorator pattern make class BurgerToppings:

-Each topping is an extra $1 and the name provided in the constructor

-getTotalPrice: returns total price of burger + toppings

-getDetails: returns the burger name + name of topping with the word (extra)

Code:

public interface Burger{
    double C();
    String getDetails();
}

public class BigMac implements Burger{
    private String order;
    private double price ;

    public BigMac() {
        this.order= "Big Mac";
        this.price = 4.00;
    }

    @Override
    public double getPrice() {
        return price;
    }

    @Override
    public String getorder() {
        return name;
    }
}

Output expected:

Ordering BigMac + extra pickles+ extra cheese
Total price = 6.0

Answer 1

CODE :

Burger.java

package c15;
public interface Burger{
double getPrice();
String getorder();
}

BurgerToppings.java

package c15;

public class BurgerToppings {
private String name;
BurgerToppings(String n){
name = n;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}

BigMac.java
PROGRAM :

package c15;

import java.util.ArrayList;

public class BigMac implements Burger{
private String order;
private double price;
private ArrayList<BurgerToppings> toppings;

public BigMac() {
this.order= "Big Mac";
this.price = 4.00;
toppings = new ArrayList<BurgerToppings>();
}

void addTopping(String top) {
toppings.add(new BurgerToppings(top));
}
@Override
public double getPrice() {
// TODO Auto-generated method stub
return 0;
}

@Override
public String getorder() {
String topping="";
for(BurgerToppings t : toppings) {
topping += " Extra "+t.getName();
}
return order+topping;
}

public double getTotalPrice() {
double top=toppings.size();
return top+price;
}

public static void main(String[] args) {
BigMac mac = new BigMac();
mac.addTopping("Cheese");
mac.addTopping("pickles");
System.out.println("Ordering "+mac.getorder());
System.out.println("Total price = "+mac.getTotalPrice());
}
}

OUTPUT :
Ordering Big Mac Extra Cheeese Extra PiCkles
Total Price = 6.0