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copied!<p><a href="https://stackoverflow.com/questions/1779589/1780062#1780062">Not a duplicate question... but my answer should help with your question</a>.</p> <p>Short summery, my preference would be to have the JFrame class not implement ActionListener and then have a number of named inner classes withing the JFrame that do implement the ActionListener.</p> <p>I would place the main in a class unto itself... and call it Main.</p> <p>Here is some sample code for the way I like to do it:</p> <pre><code>import javax.swing.JFrame; import javax.swing.SwingUtilities; public class Main { private Main() { } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); } private static void createAndShowGUI() { final FooFrame frame; frame = new FooFrame(); frame.setupGUI(); frame.pack(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } } </code></pre> <p>and then the GUI:</p> <pre><code>import java.awt.FlowLayout; import java.awt.LayoutManager; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; public class FooFrame extends JFrame { private final JButton incrementBtn; private final JButton decrementBtn; private int value; { incrementBtn = new JButton("++"); decrementBtn = new JButton("--"); } private class IncrementListener implements ActionListener { public void actionPerformed(final ActionEvent evt) { increment(); } } private class DecrementListener implements ActionListener { public void actionPerformed(final ActionEvent evt) { decrement(); } } public void setupGUI() { final LayoutManager layout; layout = new FlowLayout(); setLayout(layout); setupListeners(); addComponents(); } private void setupListeners() { incrementBtn.addActionListener(new IncrementListener()); decrementBtn.addActionListener(new DecrementListener()); } private void addComponents() { add(incrementBtn); add(decrementBtn); } private void increment() { value++; System.out.println("value = " + value); } private void decrement() { value--; System.out.println("value = " + value); } } </code></pre>

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