回答編集履歴
1
nullを返さない
test
CHANGED
|
@@ -14,7 +14,9 @@
|
|
|
14
14
|
|
|
15
15
|
if(persons == null || persons.length == 0) {
|
|
16
16
|
|
|
17
|
-
return null;
|
|
17
|
+
// return null;
|
|
18
|
+
|
|
19
|
+
throw new IllegalArgumentException("person does not exist");
|
|
18
20
|
|
|
19
21
|
}
|
|
20
22
|
|