Help creating a MatchingTask

[Mark McKay]

I'm trying to create a custom ant task that I can call from my build 
scripts.  Right now I'm just trying to figure out how to write a task 
that can accept a fileset and iterate through all valid files.  My best 
guess so far is below.

Unfortunately, this is giving me errors that I have not encountered in 
Java before.  What does 'cannot be applied to ()' mean?  Could anyone 
suggest what I could do to fix my program?

Thanks.
Mark McKay
=========================
Error:
com/kitfox/anttask/MyAntTask.java [26:1] 
getDirectoryScanner(org.apache.tools.ant.Project) in 
org.apache.tools.ant.types.AbstractFileSet cannot be applied to ()
       DirectoryScanner scanner = fs.getDirectoryScanner();
                                    ^
1 error
Errors compiling MyAntTask.

=========================
package com.kitfox.anttask;
import org.apache.tools.ant.*;
import org.apache.tools.ant.taskdefs.*;
import org.apache.tools.ant.types.*;
/**
*
* @author  kitfox
*/
public class MyAntTask extends MatchingTask {
  
   /** Creates a new instance of MyAntTask */
   public MyAntTask() {
   }
  
   public void execute() throws BuildException
   {
       FileSet fs = getImplicitFileSet();
       DirectoryScanner scanner = fs.getDirectoryScanner();
      
       scanner.scan();
      
       String[] files = scanner.getIncludedFiles();
       for (int i = 0; i < files.length; i++) {
           System.out.println(files[i]);
       }
   }
  
}


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