// usage:  java ReadInt 

// shows one way of reading an integer typed at the keyboard

import java.io.*;

public class ReadInt  

{  public static void main(String[] Args) throws IOException {

      System.out.println("enter an integer, and hit Enter");
      // in order to use readLine(), we must wrap System.in in 
      // InputStreamReader, and that in turn in BufferedReader
      BufferedReader B = 
         new BufferedReader(new InputStreamReader(System.in));
      // to simplify, no try/catch here; we just have "throws" above
      String S = B.readLine();
      int N = Integer.parseInt(S);
      System.out.println("you entered "+N);
    
   } 
}