Number Pattern 1 by do while loop

Code Box by do while loop
------------------------------
/*program to print number pattern square box by do while loop

  12345
  12345
  12345
  12345
  12345

*/

class npat1do
{
public static void main(String a[])
{
int n,i,j;
i=1;
n=Integer.parseInt(a[0]);

do
{j=1;
        do
 {
        System.out.print(j);
        j++;
 }
 while(j<=n);
        
System.out.print("\n");
i++;
}
while(i<=n);

}


}