如何在 Swing JOptionPane 中制作红色消息？

Question

我想让我的错误消息变成红色，这是使用 Swing 制作的：

JOptionPane.showMessageDialog(null,
 "Welcome\nTo\nJava\nProgramming!", "subject", JOptionPane.ERROR_MESSAGE);

但是这段代码会出现一个黑色对话框，请问有什么方法可以让它变成红色？

Answer 1

您可以在 HTML 的帮助下实现它，如下所示：

JOptionPane.showMessageDialog(null ,
     "<html><div color=red>Welcome<br/>To<br/>Java<br/>Programming!" , "subject" , JOptionPane.ERROR_MESSAGE);

Answer 2

public void showColoredMessageDialog(String message, Color color){
        //The label to show your message
        JLabel l = new JLabel(message);
        //the color for your message
        l.setForeground(color);
        //show JOptionPane.showMessageDialog with your custom color message
        JOptionPane.showMessageDialog(this, l);
    }

//You can call this method like for ex:
String msg = "hello world!";
//display this message with red color
showColoredMessageDialog(msg, Color.red);

//or you can also pass messages with variable values

int count = 10;
String msg2 = "the value of count is : " + count;

//display this message but this time with green color
showColoredMessageDialog(msg2, Color.green);

如何在 Swing JOptionPane 中制作红色消息？

How to make a red message in Swing JOptionPane?

java

swing

joptionpane