java - 使用向上/向下键导航后，jTable 的行号错误

Question

为了获取 jTable 中选定的行，我使用了 MouseEvent (MouseClicked)。这工作正常，并在单击表格后给我正确的行号。

为了在 jTable 中导航，我添加了一个新的监听器 (KeyPressed)。如果我按向上键，则行号不会增加。如果我再次按向上键，行数将会更新，但它是之前的行数。

private void jTable1KeyPressed(java.awt.event.KeyEvent evt) { 
    if(evt.getKeyCode() == evt.VK_UP){
     System.out.println("Key UP" + jTable1.getSelectedRow()); 
    } 

    if(evt.getKeyCode() == evt.VK_DOWN){ 
    System.out.println("Key DOWN" + jTable1.getSelectedRow()); 
    }
}

这是简单的代码。如果我单击表的第一行并按向下键，则输出为“Key DOWN0”。但第二行被选择，输出应该是“Key DOWN1”。

Answer 1

To get the selected row in a jTable, I used a MouseEvent (MouseClicked). That works fine and give me the correct rownumber after clicking into the table.

To navigate trough the jTable, I added a new Listener (KeyPressed). If I press the up key, the rownumber is not been increased. If I press the up key again, the rowcount will be updated, but it is the rowcount from previously

.

我认为你需要

• 添加ListSelectionListener to JTable

• 更改 ListSelectionMode