1 /*
 2  * Modeling a pair.
 3  */
 4 package alist;
 5 
 6 /**
 7  *
 8  * @author notebook
 9  */
10 public class Pair<A, B> implements PairADT<A, B> {
11 
12     private A a;
13     private B b;
14 
15     public Pair(A a, B b) {
16         this.a = a;
17         this.b = b;
18     }
19 
20     @Override
21     public A a() {
22         return a;
23     }
24 
25     @Override
26     public B b() {
27         return b;
28     }
29 
30     public String toString() {
31         return "(" + a + "," + b + ")";
32     }
33 }
34