如何通过按键盘上的DELETE删除JTable中的一行

Question

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

编辑:

我试过这个,但它不起作用:

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
    }
}

Answer 1

KeyListeners的一个问题是被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.

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
     }
  });