Formatter Example

import java.util.Scanner;
import java.util.Formatter;

public class FormatExample {
  public static void main(String[] args) {
    Scanner in = new Scanner(System.in);
    int a = 0;
    try {
      a = new Integer(in.next());
    }
    catch (Exception e) {
    }
    in.close();
    Formatter formatter = new Formatter();
    formatter.format("%02d", a);
    System.out.println(formatter);
  }
}