private void run_use_listener() {

        SwingWorker<Void,Void> worker = new SwingWorker<Void, Void>() {
            @Override
            protected Void doInBackground() throws Exception {
                //throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
               //System.out.println("SHIZZZZZZZZZZZZZ");
                ServerSocket ss = new ServerSocket(3333);
                Socket sss = ss.accept();
                DataInputStream dis = new DataInputStream(sss.getInputStream());

                int fb_stop = dis.readInt();
                if(fb_stop==1){
                    //System.out.println("SHIZZZZZZZZZZZZZ");
                    PC_1.setBackground(Color.RED);
                    pc_stat1_lbl.setText("Used");
                    vacant[1]=0;
                    reserved[1]=0;
                    used[1]=1;
                    ss.close();
                }

                return null;
            }
        };
        worker.execute();

    }