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    <p>This example shows how to create a grid button that knows its location on the grid. The method <code>getGridButton()</code> shows how to obtain a button reference efficiently based on its grid coordinates, and the action listener shows that the clicked and found buttons are identical.</p> <p><img src="https://i.stack.imgur.com/Cm9MP.png" alt="GridButtonPanel"></p> <pre><code>package gui; import java.awt.EventQueue; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.ArrayList; import java.util.List; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; /** * @see http://stackoverflow.com/questions/7702697 */ public class GridButtonPanel { private static final int N = 5; private final List&lt;JButton&gt; list = new ArrayList&lt;JButton&gt;(); private JButton getGridButton(int r, int c) { int index = r * N + c; return list.get(index); } private JButton createGridButton(final int row, final int col) { final JButton b = new JButton("r" + row + ",c" + col); b.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { JButton gb = GridButtonPanel.this.getGridButton(row, col); System.out.println("r" + row + ",c" + col + " " + (b == gb) + " " + (b.equals(gb))); } }); return b; } private JPanel createGridPanel() { JPanel p = new JPanel(new GridLayout(N, N)); for (int i = 0; i &lt; N * N; i++) { int row = i / N; int col = i % N; JButton gb = createGridButton(row, col); list.add(gb); p.add(gb); } return p; } private void display() { JFrame f = new JFrame("GridButton"); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.add(createGridPanel()); f.pack(); f.setLocationRelativeTo(null); f.setVisible(true); } public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { @Override public void run() { new GridButtonPanel().display(); } }); } } </code></pre>
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    1. POHow to get X and Y index of element inside GridLayout?
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    1. COhow easy that should be, for some of answers is unjust that my limit is only one up-vote
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    2. COAhha, a quick question PLEASE, I just learned one thing with this that in order to use `this` inside `Anonymous Classes` we can use the `ClassName.this`, but does that mean that `this` is static ? Hope I am not looking stupid, when I asked this question :-)
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    3. CONo, just the opposite. The first [*qualified `this`*](http://docs.oracle.com/javase/specs/jls/se7/html/jls-15.html#jls-15.8.4) refers to the enclosing instance of `GridButtonPanel`, while the second refers to the enclosing instance of `GridButton`.
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