Two Dimension Array in PL/SQL

A Simple Example of 2D Array in PL/SQL 

create or replace type Arr1D_Type is table of Number(2);

create or replace type Arr2D_Type is table of Arr1D_Type;

declare
 Arr2D Arr2D_Type;
begin
 Arr2D := new Arr2D_Type(
  Arr1D_Type( 1,2,3,4 ),
  Arr1D_Type( 5,6,7,8 ),
  Arr1D_Type( 9,10,11,12 ),
  Arr1D_Type( 13,14,15,16 )
    );

 DBMS_OUTPUT.PUT_LINE('     OUTPUT     ');
 DBMS_OUTPUT.PUT_LINE('----------------');
 
 for x in 1..Arr2D.Count
 loop
  for y in 1..Arr2D(x).Count
  loop
   DBMS_OUTPUT.PUT(rpad(Arr2D(x)(y),4));
  end loop;
  DBMS_OUTPUT.PUT_LINE('');
 end loop;
end;
/

OUTPUT
----------------
1   2   3   4
5   6   7   8
9   10  11  12
13  14  15  16