为什么每个的左侧尺寸不等于右侧？

Question

The declared size in for-each is always less than the size of the array.why ?

int[][][] c = {{{1,2,3}}};
for(int [][] z : c )
    //code

c is a 3D array so should z, right? like:

int[][][] c = {{{1,2,3}}};
for (int[][][] z : c) // which is syntactically wrong
    //code

Thank you in advance.

The answer as I understand it from the comments and the below answer: the declaration inside for-each

in the 3D array for-each considers every 2D array as an element,

in the 2D array for-each considers every 1D array as an element and so on..

in the 1D array it takes the elements of the array directly as elements.

Answer 1

Read that construct as the for-each loop. In this case, for each int[][] in the int[][][] . Another example, for-each int in an int[] .

int[] arr = {1,2,3};
for (int i : arr) {
    System.out.println(i);
}