问题:

Is it possible to align the text to the right in JOptionPane? (I don't want to use JDialog) because I want to write some sentences in Arabic

回答1:

Create a JPanel, align your text in your JPanel and then add the JPanel as the Object parameter of the JOptionPane. Or use a JDialog (why the desire not to use one of these?).

回答2:

 String message = "<html><body><div width='200px' align='right'>This is some text!</div></body></html>";
 JLabel messageLabel = new JLabel(message);
 JOptionPane.showConfirmDialog(null, messageLabel);

回答3:

Try using a JLabel on the JOptionPane and then use HTML to align it.

You can find more about using HTML with Swing components here

Hope this helps.

回答4:

As stated by ... Hovercraft Full Of Eels, you perfectly can use a JComponent as message in a JOptionPane#showMessageDialog. As a consequence, create a JPanel using a GridBagLayout, put a JLabel in it with your text, use the righ set of GridBagConstraints to ensure the text is right-align, and voila ! A JOptionPane with a right-aligned text.