How to Assign Shortcut Keys to JButtons in Java Using Keyboard Input?

How to Assign Shortcut Keys to JButtons in Java

Assigning shortcut keys to JButtons allows users to trigger button actions through keyboard presses, enhancing the user experience and efficiency.

Solution:

To add a shortcut key to a JButton, you need to perform the following steps:

1. Create an Action object that defines the action associated with the shortcut key.
2. Register the Action as a KeyStroke listener for the JButton using getInputMap() and getActionMap().
3. Bind the KeyStroke to the Action using put(KeyStroke, Action).

Example:

Consider the following code snippet:

<code class="java">// Create an Action for the button
Action action = new AbstractAction() {
    @Override
    public void actionPerformed(ActionEvent e) {
        // Perform the button's action
    }
};

// Register the Action as a KeyStroke listener
button.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(KeyStroke.getKeyStroke(KeyEvent.VK_DELETE, 0), "delete");
button.getActionMap().put("delete", action);</code>

In this example, the Action is triggered when the Delete key is pressed while the button has focus.

Additional Resources:

• [Swing Tutorial: How to Use Actions](https://docs.oracle.com/javase/tutorial/uiswing/misc/actionlistener.html)
• [Swing Tutorial: How to Use Key Bindings](https://docs.oracle.com/javase/tutorial/uiswing/misc/keybinding.html)

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