Handler i worker

//Kod opdpowiadający za handlowanie xD
public static class ValueExportTransferHandler extends TransferHandler {

        public static final DataFlavor SUPPORTED_DATE_FLAVOR = DataFlavor.stringFlavor;
        private String value;

        public ValueExportTransferHandler(String value) {
            this.value = value;
        }

        public String getValue() {
            return value;
        }

        @Override
        public int getSourceActions(JComponent c) {
            return DnDConstants.ACTION_COPY_OR_MOVE;
        }

        @Override
        protected Transferable createTransferable(JComponent c) {
            Transferable t = new StringSelection(getValue());
            return t;
        }

        @Override
        protected void exportDone(JComponent source, Transferable data, int action) {
            super.exportDone(source, data, action);
            // Decide what to do after the drop has been accepted
        }

    }

    public static class ValueImportTransferHandler extends TransferHandler {

        public static final DataFlavor SUPPORTED_DATE_FLAVOR = DataFlavor.stringFlavor;

        public ValueImportTransferHandler() {
        }

        @Override
        public boolean canImport(TransferHandler.TransferSupport support) {
            return support.isDataFlavorSupported(SUPPORTED_DATE_FLAVOR);
        }

        @Override
        public boolean importData(TransferHandler.TransferSupport support) {
            boolean accept = false;
            if (canImport(support)) {
                try {
                    Transferable t = support.getTransferable();
                    Object value = t.getTransferData(SUPPORTED_DATE_FLAVOR);
                    if (value instanceof String) {
                        Component component = support.getComponent();
                        if (component instanceof JLabel) {
                            ((JLabel) component).setText(value.toString());
                            accept = true;
                        }
                    }
                } catch (Exception exp) {
                    exp.printStackTrace();
                }
            }
            return accept;
        }
    }
}




//Kod z przykładowym jbuttonem, który można przeciągnąć do monday1
File work4 = new File("C:\\GRAFIK\\Pracownik4.txt");
            BufferedReader reader4 = null;
            try {
            	reader4 = new BufferedReader(new FileReader(work4));
            	String txt4 = null;
            	String savetext4 = "";

            	while ((txt4 = reader4.readLine()) != null) {
            		savetext4 += txt4;
            	}
            	worker4.setText(savetext4);
            }
            catch (Exception e) {
                System.out.println("Exception while reading file: " + e);
            }

            worker4.setTransferHandler(new ValueExportTransferHandler(worker4.getText()));
            worker4.addMouseMotionListener(new MouseAdapter() {
            	@Override
                public void mouseDragged(MouseEvent e) {
            		JButton worker44 = (JButton) e.getSource();
                    TransferHandler handle = worker44.getTransferHandler();
                    handle.exportAsDrag(worker44, e, TransferHandler.COPY);
                }
            });