java – 如何更改JOptionPane的背景颜色？

我已经在我的应用程序中添加了JOptionPane,但是我不知道如何将背景颜色更改为白色？

`int option = JOptionPane.showConfirmDialog(bcfiDownloadPanel,new Object[]{"Host: " + source,panel},"Authorization required",JOptionPane.OK_CANCEL_OPTION,JOptionPane.PLAIN_MESSAGE
    );

    if (option == JOptionPane.OK_OPTION) {                  }`

解决方法

通过使用 UIManager课

import javax.swing.UIManager;

 UIManager UI=new UIManager();
 UI.put("OptionPane.background",new ColorUIResource(255,0));
 UI.put("Panel.background",0));

要么

UIManager UI=new UIManager();
 UI.put("OptionPane.background",Color.white);
 UI.put("Panel.background",Color.white);

 JOptionPane.showMessageDialog(null,"Text","SetColor",JOptionPane.informatION_MESSAGE);

原文地址：https://www.jb51.cc/java/120535.html