java:在main方法中使用3d数组from方法

int[][][] array = new int[x][y][z];

public static int[][][] from(int[][][] source) {
    int[][][] newArray = new int[source.length][source[0].length][source[0][0].length];
    for (int i = 0; i < source.length; i++) {
        for (int j = 0; j < source[0].length; j++) {
            for (int k = 0; k < source[0][0].length; k++) {
                newArray[i][j][k] = source[i][j][k];
            }
        }
    }
    return newArray;
}