多维数组问题Java

Question

whenever i am passing two 1-d array as argument to a 2-d array it is working fine, but when i try to pass three 1-d arrays to a 3-d array argument method then it is giving error but same works fine when i pass three 1-d array to 2-d array.

What is the reason behined this behaviour ?

Two 1-d array to a 2-d method:-

int[] c=new int[] {4,50};
        m1(new int[]{10,20},c);


    public static void m1(int[]... a)]

Three 1-d array to a 3-d method :- , error - The method m1(int[][]...) in the type Asd is not applicable for the arguments (int[], int[], int[])

    int[] b=new int[] {3,50};
int[] c=new int[] {4,50};
        m1(new int[]{10,20},c,new int[] {4,50});


    public static void m1(int[][]... a)

Three 1-d array to 2-d array:-

int[] c=new int[] {4,50};
        m1(new int[]{10,20},c,new int[] {4,50});
    }

    public static void m1(int[]... a)

Answer 1

The ellipsis (...) is just an array.

int[]...a <=> int[][] a

int[][]...a <=> int[][][] a

in the second exemple the m1 method wait for a 3d array OR a list of 2d array, but you call it with a list of 1d array

the good call is :

m1(new int[][], new int[][] , ...)

and in the m1 method the a arg is of type int[][][]