20 lines
598 B
Java
20 lines
598 B
Java
// collections/SetOfInteger.java
|
|
// (c)2017 MindView LLC: see Copyright.txt
|
|
// We make no guarantees that this code is fit for any purpose.
|
|
// Visit http://OnJava8.com for more book information.
|
|
import java.util.*;
|
|
|
|
public class SetOfInteger {
|
|
public static void main(String[] args) {
|
|
Random rand = new Random(47);
|
|
Set<Integer> intset = new HashSet<>();
|
|
for(int i = 0; i < 10000; i++)
|
|
intset.add(rand.nextInt(30));
|
|
System.out.println(intset);
|
|
}
|
|
}
|
|
/* Output:
|
|
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
|
|
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29]
|
|
*/
|