Changing the way data is read into a program

Question

Hi,
I have created a program which reads in the contents of a specified file, in this case aboutme.txt, displays the file contents on screen and counts the number of words in the file.
I would like to be able to read data from any program specified by the user when the program is executed at the linux console
e.g.
java WordCounter myfile.txt
How can i edit the code so that it will do this?
Here is the code that i have done already, which works ok
import java.io.*;
import java.util.*;
class WordCounterApp
     public static InputStreamReader input =
          new InputStreamReader(System.in);
     public static BufferedReader keyboardInput =
          new BufferedReader(input);
     public static void main(String[] args) throws IOException
          FileReader file = new FileReader("aboutme.txt");
          BufferedReader MyFile = new BufferedReader(file);
          StringTokenizer TokenizeMe;
          int NumberOfTokens = 0;
          int NumberOfWords = 0;
          TokenizeMe = new StringTokenizer(MyFile.readLine());
          NumberOfTokens = TokenizeMe.countTokens();
          while (NumberOfTokens != 0)
               for (int WordsInLine=1; WordsInLine<=NumberOfTokens;
                         WordsInLine++)
                    System.out.print(TokenizeMe.nextToken()+" ");
               System.out.println();
               NumberOfWords += NumberOfTokens;
               TokenizeMe = new StringTokenizer(MyFile.readLine());
               NumberOfTokens = TokenizeMe.countTokens();
          System.out.println("\nThere are " + NumberOfWords + " words in the file");
          MyFile.close();
thanks
Carl

Answer 1

Ok, heres what i have. This removes the error message but it only prints two of the three lines of text in my test file, the first and the last. so now when i run the program i get this:
java Document myfile.txt
This is my file
It is quite small, for a file
There are 11 words in the file
Whereas, it should say this:
java Document myfile.txt
This is my file
It contains several lines of text
It is quite small, for a file
There are 17 words in the file
Here is the code i now have
import java.io.*;
import java.util.*;
class Document
              public static InputStreamReader input =
                          new InputStreamReader(System.in);
              public static BufferedReader keyboardInput =
                          new BufferedReader(input);
              public static void main(String[] args) throws IOException
                          FileReader file = new FileReader(args[0]);
                          BufferedReader MyFile = new BufferedReader(file);
                          StringTokenizer TokenizeMe;
                           int NumberOfTokens = 0;
                           int NumberOfWords = 0;
               TokenizeMe = new StringTokenizer(MyFile.readLine());
               NumberOfTokens = TokenizeMe.countTokens();
               while (NumberOfTokens != 0)
                           for (int  WordsInLine=1; WordsInLine<=NumberOfTokens;
                                                                                 WordsInLine++)
                                      System.out.print(TokenizeMe.nextToken()+" ");
                          System.out.println();
                          NumberOfWords += NumberOfTokens;
                         String line = MyFile.readLine();
                         if (line==null) break;
                         TokenizeMe = new StringTokenizer(line);
                         TokenizeMe = new StringTokenizer(MyFile.readLine());
                         NumberOfTokens = TokenizeMe.countTokens();
             System.out.println("\nThere are " + NumberOfWords + " words in the file");
             MyFile.close();
}I really appreaciate the help given so far, but this is the final piece really, so a suggestion would be appreciated
thanks
Carl