//  Fileput.java  Copyright (c) 2005 Kari Laitinen

//  http://www.naturalprogramming.com

//  2005-05-09   File created.
//  2005-05-09   Last modification.

import java.util.* ;
import java.io.* ;  // Classes for file handling.
import java.util.regex.* ;

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

      System.out.print( "\n This program allows you to store text in a"
                      + "\n text file. First give a file name: " ) ;

      String  file_name_from_user  =  keyboard.nextLine() ;

      try
      {
         PrintWriter output_file  =  new  PrintWriter(
                           new  FileWriter( file_name_from_user ) ) ;

         System.out.print( "\n Please, start typing in text from the keyboard."
                         + "\n Type in Ctrl-A and Enter to finish. \n\n" ) ;

         //  The Pattern.DOTALL flag specifies that also line-termination
         //  characters are matched by the regular expression "."
   
         Pattern match_all_characters  =  Pattern.compile( ".", 
                                                            Pattern.DOTALL ) ;

         //  We'll read one character at a time from the keyboard, but
         //  but we must use a String object to store the single character.
   
         String character_from_keyboard  =  keyboard.findInLine( 
                                                  match_all_characters ) ;

         while( character_from_keyboard.charAt( 0 )  !=  '\u0001'  )
         {
            output_file.print( character_from_keyboard.charAt( 0 ) ) ;

            character_from_keyboard  =   keyboard.findInLine( 
                                                  match_all_characters ) ;
         }

         output_file.close() ;
      }
      catch ( Exception caught_exception )
      {
         System.out.print( "\n Cannot write to file " + file_name_from_user ) ;
      }
   }
}