Java数组长度最大能有多大？

java.util.ArrayList

.Hashtable

.AbstractCollection

.PriorityQueue

.Vector

/**
* Some VMs reserve some header words in an array.
* Attempts to allocate larger arrays may result in
* OutOfMemoryError: Requested array size exceeds VM limit
*/
private static final int MAX_ARRAY_SIZE = Integer.MAX_VALUE - 8;