在JAVA中，有如下代码:

 1 public class SwitchTest {
 2     public static void main (String[] args) {
 3         System.out.println ("value =" + switchIt(4));
 4     }
 5     public static int switchIt(int x) {
 6         int j = 1;
 7         switch (x) {
 8         case 1: j++;
 9         case 2: j++;
10         case 3: j++;
11         case 4: j++;
12         case 5: j++;
13         default:j++;
14         }
15         return j + x;
16     }
17}

第 3 行的输出结果是什么？(     )