Write a java code to print following pattern

1
23
456

Solution:

class printPattern
{
     public static void main(String abc[])
     {
        int counter=1;    
        for(int i=1;i<4;i++)
        {                    
            for(int j=1;j<=i;j++)
              {
                System.out.print(counter);
                counter++;
              }
              System.out.println();
         }
     }
}