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Editorial Team
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Asked: 2026-05-13T11:50:06+00:00

I have a JButton that is constructed using an Action and this action has

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I have a JButton that is constructed using an Action and this action has a name that is contains html.

I then go about setting the mnemonic on the JButton by first parsing out html to get the first character in the name.

For example, the JButton name might be "<html>Test<br>Button</html>", so after parsing the html the mnemonic key should be “T”.

So now when the JButton is rendered I can push alt-T to activate the button, however the underline mnemonic indicator on the T is not present.

Would anyone know a way to get this to occur?

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1 Answer

  1. Editorial Team

    It is unclear to me what you mean by “setting the mnemomic on the JButton by parsing html”. The mnemonic can be set on a JButton by calling the method setMnemonic in the JButton class. I tried below piece of code and when I press Alt+P I get the message I am pressed printed in the console.

    public class HTMLButton extends JPanel implements ActionListener {
    JButton     b1;
    public HTMLButton() {
        super(new BorderLayout());
        b1 = new JButton("<html><b><u>P</u>ress</b></html>");
        b1.setMnemonic(KeyEvent.VK_P);
        b1.addActionListener(this);
        add(b1);
    }

    public void actionPerformed(final ActionEvent e) {
        System.out.println("I am pressed");
    }
}

    Also see the section How to Use HTML in Swing Components in the Java tutorial.

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