import java.io.*;
import java.text.*;

public class RDTest{  //we will read in a double 
     public static void main(String[] args){
       System.out.println("Enter a double precision number");
       double x; // we shall use x for our number
       try { InputStreamReader isr = new InputStreamReader(System.in);
             BufferedReader br = new BufferedReader(isr);
             String s = br.readLine();
             DecimalFormat df = new DecimalFormat();
             Number n = df.parse(s);
             x = n.doubleValue();
       } // end try
       catch(IOException e) {x = 0;} 
       catch(ParseException e) {x = 0;} 
       x = x + 2;
       System.out.println("Your number plus 2 is " +  x);
     } // end main
 } // end class