Question

我有一个JOptionPane，是的，没有按钮。但是，无论你点击它的哪个按钮仍然存在。救命！下面是代码：

int dialogButton = JOptionPane.YES_NO_OPTION;
            JOptionPane.showConfirmDialog (null, "Are you sure?","WARNING", dialogButton);
            if(dialogButton == JOptionPane.YES_OPTION) {
                System.exit(0);
            if(dialogButton == JOptionPane.NO_OPTION) {
                  remove(dialogButton);
                }
              }

Answer 1

您应该从选项窗格中获取结果：

dialogButton = JOptionPane.showConfirmDialog (null, "Are you sure?","WARNING", dialogButton);

否则，它仍然设置为JOptionPane.YES_NO_OPTION。

清洁工将是：

if (JOptionPane.showConfirmDialog(null, "Are you sure?", "WARNING",
        JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION) {
    // yes option
} else {
    // no option
}

虽然，我不确定在发布的代码中该行应该做什么：remove(dialogButton);。

有关详细信息和示例，请查看How to Make Dialogs教程。

Answer 2

int dialogButton = JOptionPane.showConfirmDialog (null, "Are you sure?","WARNING",JOptionPane.YES_NO_OPTION);

if(dialogButton == JOptionPane.YES_OPTION) {
System.exit(0);}else {remove(dialogButton);}

这是正确的！

Answer 3

将代码更改为

int dialogButton = JOptionPane.showConfirmDialog (null, "Are you sure?","WARNING", dialogButton);

Answer 4

if(dialogButton == JOptionPane.YES_OPTION) { // <<< start
    System.exit(0);
        if(dialogButton == JOptionPane.NO_OPTION) {
            remove(dialogButton);
        }
}// <<< stop

结果是由于外部if包含其他if语句，请确保您不在if语句旁边，它应如下所示： -

if(dialogButton == JOptionPane.YES_OPTION) {
    System.exit(0);
}else {
    remove(dialogButton);
}

另一件事就是这一行int dialogButton = JOptionPane.YES_NO_OPTION;，将其改为

int dialogButton = JOptionPane.showConfirmDialog (null, "Are you sure?","WARNING", dialogButton);

Answer 5

如果你希望JOptionPane消失，那么你可以：

optionPane.setVisible(false);

如果不这样做，请查看其他答案。

Answer 6

if (JOptionPane.showConfirmDialog(this, "sfd", "sd", JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION) {
    jProgressBar1.setValue(jProgressBar1.getValue() + 10);
    jProgressBar1.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
}
else {
    System.exit(0);
}

JOptionPane是没有选项

6 个答案: