0到29之间的

public class SetOfinterger {

	public static void main(String[] args) {
		
		Random random = new Random();
		Set<Integer> list = new HashSet<Integer>();
		for (int i = 0; i < 10000; i++) {
			Integer num = random.nextInt(30);
			list.add(num);
			//System.out.println(i);
			
		}
      System.out.println(list);
	}

0到29之间的