Setting up Swing worker

[Jarwulf]

I'm trying to set up a swing worker that does some file processing in the background while updating progress to a JtextArea.



From class X I call swingworker FileProcessor

{
JTextArea outerTextArea;
File selectedFile

FileProcessor task = new FileProcessor(selectedFile, outerTextArea);
selectedFileHolder = task.execute();
}

Fileprocessor Internals

class FileProcessor extends 
         SwingWorker<File, JTextArea> {
	
    
    
     FileProcessor(File INPUT, JTextArea innerTextArea) { 
         //initialize 
     }


@Override
public File doInBackground() {
  	File convertedFile = new File("convertedFile.txt");
	int counter=0;
	
	IoUtil.assertFileIsReadable(INPUT);

    
    final GenericFileReader reader = new GenericFileReader(INPUT);

while(somecondition==condition)
{
//processing stuff
counter++;
}

return convertedFile;

  }
}

A few questions

It keeps telling me INPUT isn't recognized in the FileProcessor class.

How do I get convertedFile in FileProcessor to be selectedFileHolder in Class X?

How would I get counter in FileProcessor to constantly update to outerTextArea in class X?

[keang]

It keeps telling me INPUT isn't recognized in the FileProcessor class.

Please use Java naming conventions ie don't use all upper case letters for variable names unless they are constants.

The problem is INPUT is a parameter in the doInBackground classes constructor and not a instance variable and so it is not visible in the doInBackground() method. In the constructor assign INPUT to an instance variable and use that to refer to the file.

How would I get counter in FileProcessor to constantly update to outerTextArea in class X?

You provide an implementation of the process(..) method to update the text area and call publish(..) from the doInBackground() to pass the data to display to the process() method.