Java Reference
In-Depth Information
Display 14.5
A Generic Ordered Pair Class
(part 2 of 2)
37
public boolean
equals(Object otherObject)
38 {
39
if
(otherObject = =
null
)
40
return false;
41
else if
(getClass() != otherObject.getClass())
42
return false
;
43
else
44 {
45 Pair<T> otherPair = (Pair<T>)otherObject;
46
return
(first.equals(otherPair.first)
47 && second.equals(otherPair.second));
48 }
49 }
50 }
Terminology
The terms
generic class
and
parameterized class
mean the same thing, namely a class with
one or more type parameters.
Display 14.6
Using Our Ordered Pair Class
(part 1 of 2)
1
import
java.util.Scanner;
2
public class
GenericPairDemo
3 {
4
public static void
main(String[] args)
5 {
6 Pair<String> secretPair =
7
new
Pair<String>("Happy", "Day");
8
9 Scanner keyboard =
new
Scanner(System.in);
10 System.out.println("Enter two words:");
11 String word1 = keyboard.next();
12 String word2 = keyboard.next();
13 Pair<String> inputPair =
14
new
Pair<String>(word1, word2);
15
if
(inputPair.equals(secretPair))
16 {
17 System.out.println("You guessed the secret words");
18 System.out.println("in the correct order!");
(continued)
