如何更改 joptionpane 的大小和字体? [英] How do you change the size and font of a joptionpane?

问题描述

你能改变 JOptionPane 文本的字体和大小吗?我试过了，只有当我在那个特定的 java 类上运行文件"时它才有效.如果您启动整个项目，它不会更改字体.我只想更改特定的 JOptionPane 而不是全部.

Can you change the font and size of the text of a JOptionPane? I tried it and it works only if I "run file" on that specific java class. If you start the whole project it does not change the font. I only want to change only a specific JOptionPane not all of them.

代码如下:

 UIManager.put("OptionPane.messageFont", new FontUIResource(new Font(  
          "Arial", Font.BOLD, 18)));       
 JOptionPane.showMessageDialog(null,"MESSAGE","ERROR",JOptionPane.WARNING_MESSAGE);         

推荐答案

这真的很容易.JOption 窗格不仅接受字符串，还接受组件.因此，您可以创建一个标签，设置其字体并将其用作消息.

It's really easy. JOption pane accepts not only strings but also components. So you can create a label set its font and use it as message.

JLabel label = new JLabel("MESSAGE");
label.setFont(new Font("Arial", Font.BOLD, 18));
JOptionPane.showMessageDialog(null,label,"ERROR",JOptionPane.WARNING_MESSAGE);

我不明白为什么之前没有人回答这个问题

I don't understand why nobody answered this question before

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