destreamer | Save Microsoft Stream videos for offline enjoyment

public class Actualizacion extends SwingWorker{
    
    private final String cmd;
    private final JTextArea jTextArea1;
    
    public Actualizacion (String c, JTextArea j){
        
        cmd = c;
        jTextArea1 = j;
        
    }

    @Override
    protected Void doInBackground() throws Exception {
        Process powerShellProcess = Runtime.getRuntime().exec(cmd);
                        // Getting the results
        powerShellProcess.getOutputStream().close();
        String line;
        BufferedReader stdout = new BufferedReader(new InputStreamReader(
                powerShellProcess.getInputStream()));

        while ((line = stdout.readLine()) != null) {
            publish(line + "\n");
            //System.out.println("" + line);
        }

        stdout.close();

        BufferedReader stderr = new BufferedReader(new InputStreamReader(
                powerShellProcess.getErrorStream()));
        while ((line = stderr.readLine()) != null) {
            publish(line + "\n");
            //System.out.println("" + line);
        }
        stderr.close();
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }
    
    @Override
    protected void done(){
        
        
        publish("\nDone");
        try {
            get();
        } catch (InterruptedException | ExecutionException e) {
            e.printStackTrace();
        }
        
        
    }
    
    @Override
    protected void process(List lines){
        
       lines.forEach((String line) -> {
       
           jTextArea1.append(line);
       
       });
        
    }
    
}