Deleting a character in a pgm

Deleting a character

public class Main

{

   public static void main(String args[])

   {

      String str = "this is Java";

      System.out.println(removeCharAt(str, 3));

    }

   public static String removeCharAt(String s, int pos)

  {

      return s.substring(0, pos) + s.substring(pos + 1);

   }

}