Maximum size of an Java array

Question

What is the maximum number of elements that an array in Java can contain?

Answer 1

You can check it by using Integer.MAX_VALUE - 5.

public class Foo {

  public static void main(String[] args) {

    Object[] arr = new Object[Integer.MAX_VALUE - 4];

  }

}

It will throw an exception saying:

Exception in thread "main" java.lang.OutOfMemoryError:

  Requested array size exceeds VM limit

Hope this answer helps you!