将动作侦听器添加到JList [英] Adding an ActionListener to a JList

问题描述

我有一个包含字符串数组的JList.基本上，它显示餐厅菜单. 在JList旁边，我有另一个为空的JList.每当用户双击第一个JList(显示菜单的地方)中的字符串时，我都希望它显示在它旁边的下一个JList中.

I have a JList with an array of strings. Basically it displays a restaurant menu. right next to the JList i have another JList which is empty. Whenever a user double clicks on a string in the first JList (where the menu is displayed) I want it to show up on the next JList which is right next to it.

我该怎么做?

推荐答案

您可以尝试

final JList list = new JList(dataModel);
MouseListener mouseListener = new MouseAdapter() {
    public void mouseClicked(MouseEvent e) {
        if (e.getClickCount() == 2) {


           String selectedItem = (String) list.getSelectedValue();
           // add selectedItem to your second list.
           DefaultListModel model = (DefaultListModel) list2.getModel();
           if(model == null)
           {
                 model = new DefaultListModel();
                 list2.setModel(model);
           }
           model.addElement(selectedItem);

         }
    }
};
list.addMouseListener(mouseListener);

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