2D array program in java

// 2D array program in java

class arrayD{
public static void main(String[] args) {


int [][] arr={ {10,20},{30,40}};


for(int i=0; i<arr.length;i++)
{
          for (int j=0;j<arr.length ;j++ ) {
          System.out.println(arr[i][j]);
          }


}

}


}