Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 3 at arraydekla.main(arraydekla.java:19) C:\Users\acer\AppData\Local\NetBeans\Cache\8.2\executor-snippets\run.xml:53: Java returned: 1 BUILD FAILED (total time: 0 seconds)
My code:
2 Answers
Arrays in Java are 0-based.
This means that you start counting indexes from 0. Thus, an array of size 2 will contain elements at indexes number 0, and 1. An array of size 3 will contain elements at indexes 0, 1, and 2.
In your code, you are accessing the element at [0,3] on line 19, and [2, 0] on line 23. Lines 23 and 27 contain the same type of error.
For more info:
1 Comment
azbarcea
I also suggest you add the following reference: stackoverflow.com/questions/24841172/…
ArrayIndexOutOfBoundsException is thrown to indicate that an array is accessed with an illegal index. Index of an array always starts with zero.
As the array is of size [2][3], we can only access the array elements [0][0], [0][1], [0][2], [1][0], [1][1], [1][2].
We cannot access [2][3], [1][3] as the index is greater than the size of the array.
3is not a valid index as you've made an array of size two by three, the max index of your inner arrays will be2(valid indexes are:0, 1, 2for an array of size 3)