如何将“JOptionPane.showConfirmDialog”弹出窗口的默认焦点从“确定”按钮更改为“文本字段”？ [复制]

Question

如何将JOptionPane.showConfirmDialog 弹出窗口的默认焦点从Ok 按钮更改为textfield？

我的代码：

public String userPassword() {

    Box box = Box.createHorizontalBox();

    JLabel j1 = new JLabel("Password: ");
    box.add(j1);

    JPasswordField jpf = new JPasswordField(24);
    box.add(jpf);

    JOptionPane.showConfirmDialog(null, box, "Enter your password", JOptionPane.OK_CANCEL_OPTION);
    char[] input = jpf.getPassword();

    String password = String.valueOf(input);
    return password;

}

Answer 1

您可以使用JOptionPane 代替JOptionPane.showConfirmDialog 来创建所需的对话框，如下所示：

JOptionPane optionPane = new JOptionPane(box, JOptionPane.QUESTION_MESSAGE, JOptionPane.OK_CANCEL_OPTION)
{
    @Override
    public void selectInitialValue()
    {
        jpf.requestFocusInWindow();
    }
};

optionPane.createDialog(null, "Title").setVisible(true); // pass your parent if possible and and define your title

Answer 2

JOptionPane.showConfirmDialog(...) 本身 调用 JOptionPane.showOptionDialog(...) 那么您可以像下面这样简单地使用 JOptionPane.showOptionDialog(...)

JOptionPane.showOptionDialog(null,
                box,
                "My Message Dialog",
                JOptionPane.OK_CANCEL_OPTION,
                JOptionPane.INFORMATION_MESSAGE,
                null, new Object[]{"Ok", "Cancel"}, box);