2d

System.out.print("[");

for(int i=0;i<outerArray.length;i++) {
  if(i+1 != outerArray.length && i != 0)
    System.out.print(", " + Arrays.toString(outerArray[i]));
  else
    System.out.print(Arrays.toString(outerArray[i]));
}
System.out.print("]");