java - 如何删除 JOptionPane 中的问号？

Question

如何摆脱 JOptionPane 左上角的任何标记？

int result = JOptionPane.showConfirmDialog(null, myPanel, 
                   "Please Enter X and Y Values", JOptionPane.OK_CANCEL_OPTION);

这工作正常，但我想删除?左上角的讨厌。

Answer 1

使用PLAIN_MESSAGE消息类型

JOptionPane.showConfirmDialog(null, "Help",
    "Please Enter X and Y Values", 
    JOptionPane.OK_CANCEL_OPTION, 
    JOptionPane.PLAIN_MESSAGE);

Answer 2

有一个覆盖方法 showConfirmDialog() 如下

/**
 * Brings up a dialog where the number of choices is determined
 * by the <code>optionType</code> parameter, where the
 * <code>messageType</code>
 * parameter determines the icon to display.
 * The <code>messageType</code> parameter is primarily used to supply
 * a default icon from the Look and Feel.
 *
 * @param parentComponent determines the <code>Frame</code> in
 *                  which the dialog is displayed; if <code>null</code>,
 *                  or if the <code>parentComponent</code> has no
 *                  <code>Frame</code>, a
 *                  default <code>Frame</code> is used.
 * @param message   the <code>Object</code> to display
 * @param title     the title string for the dialog
 * @param optionType an integer designating the options available
 *                   on the dialog: <code>YES_NO_OPTION</code>,
 *                  <code>YES_NO_CANCEL_OPTION</code>,
 *                  or <code>OK_CANCEL_OPTION</code>
 * @param messageType an integer designating the kind of message this is;
 *                  primarily used to determine the icon from the pluggable
 *                  Look and Feel: <code>ERROR_MESSAGE</code>,
 *                  <code>INFORMATION_MESSAGE</code>,
 *                  <code>WARNING_MESSAGE</code>,
 *                  <code>QUESTION_MESSAGE</code>,
 *                  or <code>PLAIN_MESSAGE</code>
 * @return an integer indicating the option selected by the user
 * @exception HeadlessException if
 *   <code>GraphicsEnvironment.isHeadless</code> returns
 *   <code>true</code>
 * @see java.awt.GraphicsEnvironment#isHeadless
 */
public static int showConfirmDialog(Component parentComponent,
    Object message, String title, int optionType, int messageType)
    throws HeadlessException {
    return showConfirmDialog(parentComponent, message, title, optionType,
                            messageType, null);
}

如您所见，第 5 个参数是您可以设置的int messageType 。有多种消息类型，例如

1. 错误信息
2. INFORMATION_MESSAGE
3. 警告信息
4. QUESTION_MESSAGE
5. PLAIN_MESSAGE

您可以选择符合您要求的一种。