Horizontally combine two 2D arrays in java -

i trying combine 2 2d arrays a, b horizontally such if:

a = [[1, 1],      [1, 1]] b = [[2, 2],      [2, 2]] 

then merged array c should like:

c = [[1, 1, 2, 2],      [1, 1, 2, 2]] 

it simple vertically combine this:

d = [[1, 1],      [1, 1],      [2, 2],      [2, 2]] 

but want horizontally combine them. idea on how accomplish 2 2d arrays have same dimension?

if dimensions of arrays , b same (i.e. positive integers x , y):

int[][] = new int[x][y]; int[][] b = new int[x][x]; 

then create new array as:

int[][] c = new int[2*x][y]; 

and use nested loops fill-in corresponding elements:

public class main {         public static void main(string[] args) {             int[][] = {{1,1},{1,1}};             int[][] b = {{2,2},{2,2}};          int[][] c = new int[2*a.length][a.length];          for(int = 0; < 2*a.length; i++) {             (int j = 0; j < a.length; j++) {                 if (i < a.length) {                     c[i][j] = a[i][j];                 } else {                     c[i][j] = b[i - a.length][j];                 }             }         }     }  }