ArrayIndexOutOfBoundsException

In short: An array was addressed with an index outside its range.

In more detail: Valid indices are 0 to length−1.

In Depth

Possible causes

• Loop runs to <= instead of <.
• Empty array.
• Wrong index calculation.

Solutions

1. Check loop bounds.
2. Test the length before access.
3. Work with for-each (iterate).

See also: Iterate, Java