如何通过按键盘上的DELETE删除JTable中的一行

问题描述

我知道我可以使用KeyListener来检查是否按下DELETE （char）127 ，但是如何将keyListener添加到JTable中的selectedRow？

I know that I can use KeyListener to check if DELETE (char) 127 is pressed or not, but how can I add keyListener to the selectedRow in JTable?

编辑：

我试过这个但它不起作用：

I have tried this but it doesn't work:

myTable.addKeyListener(this);
...
public void keyPressed(KeyEvent e)
{
    if(e.getKeyCode() == 127 && myTable.GetSelectedRow() != -1)
    {
        btnRemove.doClick(); // this will remove the selected row in JTable
    }
}

推荐答案

KeyListeners的一个问题是，正在侦听的组件必须具有焦点。解决这个问题的一种方法是使用Key Bindings。

One issue with KeyListeners is that the component being listened to must have the focus. One way to get around this is to use Key Bindings.

例如，

  // assume JTable is named "table"
  int condition = JComponent.WHEN_IN_FOCUSED_WINDOW;
  InputMap inputMap = table.getInputMap(condition);
  ActionMap actionMap = table.getActionMap();

  // DELETE is a String constant that for me was defined as "Delete"
  inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_DELETE, 0), DELETE);
  actionMap.put(DELETE, new AbstractAction() {
     public void actionPerformed(ActionEvent e) {
        // TODO: do deletion action here
     }
  });

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