1    package model; 
2     
3    import java.util.List; 
4    import java.util.LinkedList; 
5     
6    class Dispenser { 
7        List<String> items = new LinkedList<>(); 
8         
9        void addIngredient(String i) 
10       { 
11           items.add(i); 
12       } 
13        
14       void dispense() { 
15           System.out.println(""); 
16           System.out.println("Dispensing:"); 
17           for(String s : items) { 
18               System.out.println("  " + s); 
19           } 
20           System.out.println(""); 
21           items.clear(); 
22       } 
23    
24       void cancel() { 
25           items.clear(); 
26       } 
27   }