ArrayIndexOutOfBoundsException

https://docs.oracle.com/javase/8/docs/api/?java/lang/ArithmeticException.html 

Java Platform SE 8

 

Thrown to indicate that an array has been accessed with an illegal index. The index is either negative or greater than or equal to the size of the array.

잘못된 인덱스를 사용하여 배열에 액세스했음을 나타냅니다. 인덱스가 음수이거나 배열 크기보다 크거나 같습니다.