//  Keyboard.java  (c) 2003 Kari Laitinen

//  www.naturalprogramming.com

//  2000-11-03  File created.
//  2004-10-11  Last modification.

//  The methods provided in this file are not used in
//  the programs of my Java book. The Java version 1.5
//  provides a class named Scanner with which it is possible
//  to read the keyboard in a rather convenient manner.

//  This file defines a class named Keyboard that contains
//  public static methods to read various data items from
//  the keyboard. This file is necessary because Java does
//  not provide simple standard methods to use the keyboard
//  in programs that are executed in the command prompt
//  window.

//  To use the methods of this class, you need to have
//  this file in the same directory (folder) as the
//  .java file that contains your program.

//  Note that at the beginning of your studies you do not
//  need to understand the inner structure of the methods
//  in this file. You just should learn how these methods
//  can be used in Java programs.

import java.io.* ;

class Keyboard
{
   public static String get_string()
   {
      String  string_from_keyboard  =  new  String() ;

      try
      {
         BufferedReader  stdin  =  new BufferedReader(

            new InputStreamReader( System.in ) ) ;

         string_from_keyboard  =  stdin.readLine() ;

      }
      catch (IOException ignored )
      {
      }

      return  string_from_keyboard ;
   }

   //  Method trim() removes white space from
   //  both ends of a string.

   public static byte get_byte()
   {
      return  Byte.parseByte( get_string().trim() ) ;
   }

   public static short get_short()
   {
      return  Short.parseShort( get_string().trim() ) ;
   }


   public static int get_int()
   {
      return  Integer.parseInt( get_string().trim() ) ;
   }

   public static int get_int_binary()
   {
      return  Integer.parseInt( get_string().trim(), 2 ) ;
   }

   public static int get_int_hexadecimal()
   {
      return  Integer.parseInt( get_string().trim(), 16 ) ;
   }


   public static long get_long()
   {
      return  Long.parseLong( get_string().trim() ) ;
   }

   public static char get_char()
   {
      String  string_from_keyboard  =  get_string() ;

      return  string_from_keyboard.charAt( 0 ) ;
   }

   public static float get_float()
   {
      return  Float.parseFloat( get_string().trim() ) ;
   }

   public static double get_double()
   {
      return  Double.parseDouble( get_string().trim() ) ;
   }

   public static void main( String[] command_line_parameters )
   {
      System.out.print("\n\n Let's test class Keyboard. Type something:  "  ) ;

      String  given_string  =  get_string() ;

      System.out.print( "\n\n  This I got: "  +  given_string ) ;

      /*******

      System.out.print("\n\n Type in a short integer:  "  ) ;

      short  given_short_integer  =  get_short() ;

      System.out.print( "\n\n  This I got: "  +  given_short_integer ) ;

      System.out.print("\n\n Type in an int integer:  "  ) ;

      int  given_integer  =  get_int() ;

      System.out.print( "\n\n  This I got: "  +  given_integer ) ;

      *******/

      System.out.print("\n\n Type in a binary int integer:  "  ) ;

      int  binary_integer  =  get_int_binary() ;

      System.out.print( "\n\n  This I got: "  +  binary_integer ) ;

      System.out.print("\n\n Type in a hexadecimal int integer:  "  ) ;

      int  hexadecimal_integer  =  get_int_hexadecimal() ;

      System.out.print( "\n\n  This I got: "  +  hexadecimal_integer ) ;




      /*******

      System.out.print("\n\n Type in a double number:  "  ) ;

      double  given_double_number  =  get_double() ;

      System.out.print( "\n\n  This I got: "  +  given_double_number ) ;

      System.out.print("\n\n Type in a float number:  "  ) ;

      float  given_float_number  =  get_float() ;

      System.out.print( "\n\n  This I got: "  +  given_float_number ) ;
      *******/

   }
}