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java - formatting text in jdialog box

问题描述:

I have a JOptionPane:

JOptionPane.showMessageDialog(null, text);

The text is a sting:

String text = "Hello world."

What I want to do is change the color of the text, specifically a single word, lets say 'Hello'. SO what I've tried is:

String t1 = "Hello";

String t2 = "world."

Font serifFont = new Font("Serif", Font.BOLD, 12);

AttributedString as = new AttributedString(t1);

as.addAttribute(TextAttribute.FONT, serifFont);

as.addAttribute(TextAttribute.FOREGROUND, Color.red);

JOptionPane.showMessageDialog(null, as+t2);

I'm not familiar with attributedtext() and this wont work. It does this:

"[email protected]"

Is there a step I'm missing? Is this not the right way? Any suggestions?

网友答案:

It should be possible to use html to solve this, ie

String t = "<html><font color=#ffffdd>Hello</font> world!";

See http://docs.oracle.com/javase/tutorial/uiswing/components/html.html for more info.

网友答案:

You can pass a Component to JOptionPane in the message parameter and will use that to display your message.

Something like a JLabel or a JPanel with labels on it.

UPDATED

JLabel, JPanel and HTML text examples

public class TestOptionPane {

    public static void main(String[] args) {

        JLabel label = new JLabel("Hello");
        label.setForeground(Color.RED);

        JOptionPane.showMessageDialog(null, label);

        JPanel pnl = new JPanel(new GridBagLayout());
        pnl.add(createLabel("The quick"));
        pnl.add(createLabel(" brown ", Color.ORANGE));
        pnl.add(createLabel(" fox "));

        JOptionPane.showMessageDialog(null, pnl);

        String text = "<html>The Quick <span style='color:green'>brown</span> fox</html>";
        JOptionPane.showMessageDialog(null, text);

    }

    public static JLabel createLabel(String text) {

        return createLabel(text, UIManager.getColor("Label.foreground"));

    }

    public static JLabel createLabel(String text, Color color) {

        JLabel label = new JLabel(text);
        label.setForeground(color);

        return label;

    }

}

On the Mac-

On Windows -

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