java - 识别用户在 Joptionpane 中选择是或否

Question

我有一个框架，当用户想要删除记录时，应该显示一个警告窗格。

但是，现在我必须认识到，如果用户选择是，然后我删除选定的行，如果选择否，不要删除它！

如何？

if (e.getSource() == deleteUser) {
JOptionPane.showConfirmDialog(rootPane, "Are You Sure To Delete?", "Delete User", WIDTH);

// if yes, Then remove
}

Answer 1

从 JavaDocs...

public static int showConfirmDialog(Component parentComponent,
                    Object message,
                    String title,
                    int optionType)
                             throws HeadlessException

Brings up a dialog where the number of choices is determined by the optionType parameter.

Parameters:
    parentComponent - determines the Frame in which the dialog is displayed; if null, or if the parentComponent has no Frame, a default Frame is used
    message - the Object to display
    title - the title string for the dialog
    optionType - an int designating the options available on the dialog: YES_NO_OPTION, YES_NO_CANCEL_OPTION, or OK_CANCEL_OPTION
Returns:
    an int indicating the option selected by the user

返回类型将取决于您传递给optionType参数的值

这建议你应该做类似的事情......

int result = JOptionPane.showConfirmDialog(rootPane, "Are You Sure To Delete?", "Delete User", JOptionPane.YES_NO_OPTION);
if (result == JOptionPane.YES_OPTION) {
    // Do something here
}

查看如何制作对话框以获取更多详细信息...