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    <p>What you need is use a <a href="http://java.sun.com/javase/6/docs/api/java/util/Timer.html" rel="noreferrer">Timer</a> which changes the state of your component ( in this case the cellular growth ) and then call <code>JComponent.repaint()</code> </p> <p>This timer can be <a href="http://java.sun.com/javase/6/docs/api/java/util/Timer.html#cancel%28%29" rel="noreferrer">cancelled</a> to make the pause and then to restart it, you just create a new one:</p> <p>So you could define the following two methods:</p> <pre><code>private Timer timer; ... public void startPaiting() { timer = new Timer(); timer.schedule( new TimerTask(){ public void run(){ changeState(); repaint(); } },0, 10000 ); // 10 s. } public void pause(){ timer.cancel(); } </code></pre> <p>And then in your "Pause/Resume" button invoke this "pause/startPaiting" methods:</p> <pre><code>if( e.getActionCommand().equals("Pause")){ growPanel.pause(); setText("Resume"); } else { growPanel.startPaiting(); setText("Pause"); } </code></pre> <p><a href="http://www.vimeo.com/8849389" rel="noreferrer">http://img512.imageshack.us/img512/7119/capturadepantalla201001.png</a></p> <p>Here's the complete source code to see it running: </p> <pre><code>import javax.swing.*; import java.awt.Graphics; import java.awt.Point; import java.awt.event.*; import java.util.Timer; import java.util.TimerTask; public class Grow { public static void main( String [] args ) { JFrame frame = new JFrame(); final GrowPanel growPanel = new GrowPanel(); frame.add( growPanel ); frame.add( new JPanel(){{ add( new JButton("Pause"){{ addActionListener( new ActionListener(){ public void actionPerformed( ActionEvent e ){ if( e.getActionCommand().equals("Pause")){ growPanel.pause(); setText("Resume"); } else { growPanel.startPaiting(); setText("Pause"); } } }); }});}}, java.awt.BorderLayout.SOUTH ); frame.setSize( 400, 300 ); frame.setVisible( true ); } } class GrowPanel extends JComponent { private int x; private int y; private Timer timer; GrowPanel() { x = 10; y = 10; startPaiting(); } public void startPaiting() { timer = new Timer(); timer.schedule( new TimerTask(){ public void run(){ changeState(); repaint(); } },0, 100 ); // or 10000 which is 10 s. } public void pause(){ timer.cancel(); } public void paintComponent( Graphics g ){ g.fillOval( x, y, 10, 10 ); } private void changeState(){ x+=10; if( x &gt;= 400 ) { y+=10; x = 0; } if( y &gt;= 300 ){ y = 10; } } } </code></pre>
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    1. COThank you, this is exactly what I need. I am having a little trouble getting it to work in my code because its set up a bit differently than yours. But 'll work on it Thanks
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    2. CO@Luke, I'm glad. You can mark my answer as accepted ( I'm telling you this because you're new to StackOverflow :P )
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    3. COHAha, alright. Is there a way I can send you my code? I am having the worst time figuring out how to get what you gave me into my code? I understand thats a lot to ask of a stranger, so no worries if thats too much.
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