Filenames as Command Line Arguments: How?

i need to create a program that involves taking in a file name as command line argument, reads the file and then displays its contents on the screen. it needs to work with any file with a .txt extension.
The only thing i dont fully understand is how to read the file name as a command line argument e.g.
"java FileReaderApp myfile.txt
----contents of file--------
Thanks in advance
Carl
P.S. I have lready read the various helps, utils etc for java and still dont really understand

Okay, first, it will help if you don't think of "filenames as command line args." The two concepts are totally independent.
Command line args are Strings. What you do with those Strings is up to you. Processing the command line args is the same, regardless of whether they represent file names or the turnons of the last 50 playmates.
The args array below contains the command line args.
public static void main(String[] args) {
// do stuff
} Files are generally referred to using the java.io.File. It takes a String for the file name. It doesn't matter where the String comes from.
Look at FileReader and BufferedReader to actually read the contents of the file.
http://java.sun.com/j2se/1.4.2/docs/api/java/io/FileReader.html
http://java.sun.com/j2se/1.4.2/docs/api/java/io/BufferedReader.html
For the basic command line arg stuff, one of the following should have some info and examples
http://java.sun.com/docs/books/tutorial/
http://java.sun.com/learning/new2java/index.html
http://javaalmanac.com
http://www.jguru.com
http://www.javaranch.com
Bruce Eckel's Thinking in Java
Joshua Bloch's Effective Java
Bert Bates and Kathy Sierra's Head First Java

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I'm very new to javadoc, and I'm trying to put together a set of guidelines for our developers to follow. One thing I came accross was command line arguments. If a main function is expecting command line arguments, how would this be documented, should @param be used? I didn't see anything about this in the guidelines sun has posted. Any help is greatly appreciated.

This is my own personal opinion, so don't treat it as a "fact", but I don't think Javadoc is best suited for specifying command line arguments. You could do the following:
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Jay,
Your question isn't very clear, hence Joerg's well meaning but irrelevant advise.
Do you mean:
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Here's my code:
package forums;
public class ArgsEchoer
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I'm using winblows shista, and it's cr@p.
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Start here: http://java.sun.com/developer/onlineTraining/new2java/

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Regards
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Filenames as Command Line Arguments: How?

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