//Sample20_32.java
class Sample20_32{

    public static void main(String[] args){

      String str1 = "123";
      String str2 = "456.25";

      Integer oi = Integer.valueOf(str1);
      Double od = Double.valueOf(str2);

      oi += 1;
      od += 11.25;

      System.out.println("oi = " + oi);
      System.out.println("od = " + od);
    }
}