ajax-user

[ajax-user] (no subject)

[<Mor...@cs...>]

  Hello!
   Admitedly I'm somewhat of a Java 'newbie' but I'm having trouble getting 
 any of the Caramel classes to work. I can compile them just fine but most 
 likely my problem stems from not know how to use a jar utility file, so if 
 anyone of you would take a moment to point out a working example I'd be most 

 appreciative. An explicit usage of Caramel would be terrific but I'd be 
happy 
 as well if you could link me to an article discussing the typical way that 
 jar files without a 'main' method (such as Caramel) are used. My only 
 experience with jar files is the usual: java -jar jar_name which always had 
a 
 'main' entry point.
 
  Caramel looks like a fun set of classes but I simply don't know how to use 
 them, even after browsing the doc and reviewing my java textbooks.
 
 Thanks very much,
 Danny 

[ajax-user] (no subject)

[<Mor...@cs...>]

I get a NullerPointerException using the code below (java GetFilesByExt 
C:\\New txt). {Note: New.txt is a file under my C:\ directory}. I thought if 
I supply (1) a directory to a path and (2) an extension then the class would 
return all the file-names under that directory having such an extension. Is 
my interpretation incorect?

This is the code I'm executing:

import caramel.util.FileUtils;
import java.io.File;

public class GetFilesByExt {

public static void main(String[] args) {
if(args.length <2){
System.out.println("Usage: java GetFilesByExt <directory path> <file 
extension>");
System.exit(-1);
}
// Get files by extension

File[] files = FileUtils.findByExt(new File(args[0]), args[1]);

System.out.println("length of files array= " +files.length);
//System.out.println("files1= " +files[1]);

for(int i = 0;i <files.length;i++) {
System.out.println(files[i].getName());
}
}
}

I added the display of the 'files' array and it always comes back 0, which 
explains why the class returns nothing. 

Can anyone explain how I'm improperly using this class?

Thanks,
Danny

Re: [ajax-user] FileUtils.findByExt

[Gerald B. <ge...@va...>]

Hi Danny,

> I get a NullerPointerException using the code below
> (java GetFilesByExt 
> C:\\New txt). {Note: New.txt is a file under my C:\
> directory}. I thought if 
> I supply (1) a directory to a path and (2) an
> extension then the class would 
> return all the file-names under that directory
> having such an extension. Is 
> my interpretation incorect?

   You need to pass in the base directory as a first
argument and not the base name of a file, that is,
change c:\\New to c:\\  . That should work.

   If you don't pass in an existing directory, you
will end up with a NullPointer exception.

   - Gerald

Re: [ajax-user] How to use jars

[Gerald B. <ge...@va...>]

Servus Danny,

> Admitedly I'm somewhat of a Java 'newbie' but I'm
> having trouble getting 
> any of the Caramel classes to work. 

  Sorry, Danny there's nothing I can do for you.
Please, ask your friends or collegues to help you out.
This is the wrong forum. I can't teach you how to use
jars. Please, look elsewhere for help.

  - Gerald