Java 数组有最大大小吗? [英] Do Java arrays have a maximum size?

问题描述

Java 数组可以包含的元素数量有限制吗?如果是，那是什么?

Is there a limit to the number of elements a Java array can contain? If so, what is it?

推荐答案

还没看到正确答案，虽然很容易测试.

Haven't seen the right answer, even though it's very easy to test.

在最近的 HotSpot VM 中，正确答案是 Integer.MAX_VALUE - 5.一旦你超越了这个:

In a recent HotSpot VM, the correct answer is Integer.MAX_VALUE - 5. Once you go beyond that:

public class Foo {
  public static void main(String[] args) {
    Object[] array = new Object[Integer.MAX_VALUE - 4];
  }
}

你得到:

Exception in thread "main" java.lang.OutOfMemoryError:
  Requested array size exceeds VM limit

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