获取已删除的JtextField文本

Question

我已经实现了一个keylistener：

    txtAddress.addKeyListener(new java.awt.event.KeyAdapter() {
        public void keyPressed(java.awt.event.KeyEvent e) {
            System.out.println("keyPressed " + e.getKeyCode() + " delete " + KeyEvent.VK_DELETE + " backspace " + KeyEvent.VK_BACK_SPACE);
            if (e.getKeyCode() == KeyEvent.VK_DELETE || e.getKeyCode() == KeyEvent.VK_BACK_SPACE) {


                StringSelection theValue = new StringSelection(txtAddress.getText());
                deleteSubscriber(theValue);


            }
        }
    });

我需要获取已删除的文本进行处理。 theValue是字段的当前文本，而不是要删除的选定文本。