虽然int自动绑定到Integer，int []不自动绑定到Integer []。

Although int is autoboxed to Integer, int[] is not Autoboxed to Integer[].

数组不是装箱的，只是类型本身。

The arrays are not boxed, just the types themselves.

请参阅：如何将int []转换为列表与LT;整数>在Java中？为解决方法和潜在的原因。

See this: How to convert int[] into List<Integer> in Java? for workarounds and the underlying reasons.