How to Control Text Wrapping in JOptionPane Dialogs?

Control Text Wrapping in JOptionPane Dialogs

Introduction

When displaying error messages in Swing applications using JOptionPane, the dialog width tends to extend proportionate to the message length. This can result in excessively wide dialogs.

Solution: Wrap Text with HTML

JOptionPane uses a JLabel to display text. Labels support HTML formatting. By setting the maximum width of the text using CSS, we can wrap the error message.

JOptionPane.showMessageDialog(
    this, 
    "<p></p>

In the above code, the width: 200px; style attribute sets the maximum width of the error message text to 200 pixels.

Reference

For more information on using HTML in Swing components, please consult the following resources:

• [How to Use HTML in Swing Components](https://docs.oracle.com/javase/tutorial/uiswing/components/example-htmlincomponents.html)
• [Simple HTML JLabel Example](https://www.codejava.net/java-se/swing/how-to-embed-html-in-jlabel)

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