Print series in java

Java series 

 Write a program to display the following series.

1

2          2

3          3          3

4          4          4          4

5          5          5          5          5

6          6          6          6          6          6

7          7          7          7          7          7          7

8          8          8          8          8          8          8          8

9          9          9          9          9          9          9          9          9

class Programno2

{

      public static void main(String args[])

     {

         int j,i=1;

        do

          {

                     for(j=0;j<i;j++)

                       {

                             System.out.print(i);

                       }

                     System.out.println("");

                     i++;

          }

      while(i<10);

   }

}

 Output