Does a primitive type multi dimensional array gets casted to Object type in Java?

问题

How come

int[] arr = new int[5];

Object[] obj = arr;

produces a compilation error while

int[][] arr = new int[5][5];

Object[] obj = arr;

doesn't?

回答1:

int[] is an Object, so array of int[] is an array of Object.

来源：https://stackoverflow.com/questions/62435112/does-a-primitive-type-multi-dimensional-array-gets-casted-to-object-type-in-java