七星彩随机选号

 1 package 课上程序;
 2
 3 /**
 4  *
 5  * 七星彩选号
 6  * @author 王启文
 7  *
 8  */
 9
10 import java.util.Scanner;
11
12 public class qixincaixuanhao {
13     public static void main(String[] args) {
14         Scanner sc = new Scanner(System.in);
15         System.out.print("请输入您需要的注数：\n");
16         if (sc.hasNextInt()) {
17             int a = sc.nextInt();
18             if (a > 0) {
19                 for (int j = 1; j <= a; ++j) {
20                     System.out.printf("第%d注为：", j);
21                     for (int i = 1; i <= 7; ++i) {
22                         int b = (int) (Math.random() * 10);
23                         System.out.print("  " + b);
24                     }
25                     System.out.println();
26                 }
27             }
28         }
29         sc.close();
30     }
31 }