How Can I Assign a Shortcut Key to a JButton Using an Action in Java?

How to Use a Shortcut Key for a JButton in Java

When assigning a shortcut key to a JButton, you want the button to respond when a certain key is pressed without the mouse. This can be achieved by creating an Action for the button. The Action is then configured by the ActionListener, and connected to a KeyStroke.

Refer to the Swing tutorial for a wide range of resources, including sections on:

• How to Use Actions
• How to Use Key Bindings

Example:

<code class="java">import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;

public class CalculatorPanel extends JPanel
{
// Use Action here
    private JTextField display;

    public CalculatorPanel()
    {
// Implement Action here
        Action numberAction = new AbstractAction()
        {
            @Override
            public void actionPerformed(ActionEvent e)
            {
                display.replaceSelection(e.getActionCommand());
            }
        };

        setLayout( new BorderLayout() );

        display = new JTextField();
        display.setEditable( false );
        display.setHorizontalAlignment(JTextField.RIGHT);
        add(display, BorderLayout.NORTH);

        JPanel buttonPanel = new JPanel();
        buttonPanel.setLayout( new GridLayout(0, 5) );
        add(buttonPanel, BorderLayout.CENTER);

        for (int i = 0; i </code>

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