//  TextFileToNumbers.java  (c) 2005 Kari Laitinen

//  http://www.naturalprogramming.com

//  2005-08-03  File created.
//  2005-08-03  Last modification.

import java.io.* ;
import java.util.* ;

class TextFileToNumbers
{
   public static void main( String[] not_in_use )
   {
      Scanner keyboard = new Scanner( System.in ) ;

      System.out.print( "\n This program prints the contents of a text"
                     +  "\n file as hexadecimal numbers. Give file name: " ) ;

      String  file_name_from_user  =  keyboard.nextLine() ;

      try
      {
         BufferedReader file_to_print =
             new BufferedReader( new FileReader( file_name_from_user ) ) ;

         boolean  end_of_file_encountered  =  false ;

         while ( end_of_file_encountered  ==  false )
         {
            String text_line_from_file  =  file_to_print.readLine() ;

            if ( text_line_from_file  ==  null )
            {
               end_of_file_encountered  =  true ;
            }
            else
            {
               System.out.print( "\n" ) ;

               for ( int character_index  =  0 ;
                         character_index  <  text_line_from_file.length() ;
                         character_index  ++ )
               {
                  int character_code  =  text_line_from_file.charAt(
                                                      character_index ) ;
                  System.out.printf( "%02X ", character_code ) ;
               }

               //  Let's forge Windows-style line termination characters

               System.out.print( "0D 0A " ) ;
            }
         }

         file_to_print.close() ;
      }
      catch ( FileNotFoundException  caught_file_not_found_exception )
      {
         System.out.print( "\n \"" + file_name_from_user + "\" not found.\n" ) ;
      }
      catch ( IOException  caught_io_exception )
      {
         System.out.print( "\n\n  File reading error.  \n" ) ;
      }
   }
}