I get this error:

"non-static method isAlive() cannot be referenced from a static context"

what's wrong with this code..please.

I'd like to detect if the thread is alive... Any help in terms of code will be highly appreciated..thanks max

class RecThread extends Thread {

    public void run() {

        recFile = new File("recorded_track.wav");
        // Output file type
        AudioFileFormat.Type fileType = null;
        fileType = AudioFileFormat.Type.WAVE;

        // if rcOn =1 thread is alive 
        int rcOn;

        try {
            // starts recording
            targetDataLine.open(audioFormat);


            targetDataLine.start();


            AudioSystem.write(new AudioInputStream(targetDataLine),
fileType, recFile);

            if (RecThread.isAlive() == true) {
            rcOn =1;
        }
        else {
        rcOn =0;
    }



        } catch (Exception e) {
            showException(e);
        }

        // update actions

        recAction.setEnabled(true);
        stopRecAction.setEnabled(false);

    }
}