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Postsdbo
PO
 

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    <p>your code isn't runnable, </p> <p>1) don't mixing AWT Frame with Swing JComponents, not sure (never tested) but I think that <a href="http://docs.oracle.com/javase/tutorial/uiswing/misc/trans_shaped_windows.html" rel="nofollow">AWTUtilities</a> is only for Swing JComponent, then </p> <pre><code>public class GameView extends Frame </code></pre> <p>could be </p> <pre><code>public class GameView extends JFrame </code></pre> <p>2) </p> <pre><code>this._boardview = new BoardView(); </code></pre> <p>must be </p> <pre><code>BoardView _boardview = new BoardView(); </code></pre> <p>3) for why reason is there code line, </p> <pre><code>RepaintManager.currentManager(null).setDoubleBufferingEnabled(true); </code></pre> <p>I saw code for printing where is for faster printing turn double buffering off, but value <code>currentManager(null)</code>, simply doesn't make me any sence</p> <p>4) never use <code>public void update(Graphics g)</code>, this method is used internally in the API, use <code>paintComponent</code> instead</p> <p>5) for moving with <code>JComponents</code> use <a href="http://docs.oracle.com/javase/tutorial/uiswing/misc/timer.html" rel="nofollow">Swing Timer</a> with calling <code>repaint()</code></p> <p>6) <a href="http://docs.oracle.com/javase/tutorial/uiswing/components/label.html" rel="nofollow">JLabel</a> is transparent by default remove <code>this.setOpaque(false);</code></p> <p>7) <a href="http://docs.oracle.com/javase/tutorial/uiswing/components/label.html" rel="nofollow">JLabel</a> haven't got imlemented any <a href="http://docs.oracle.com/javase/tutorial/uiswing/layout/index.html" rel="nofollow">LayoutManager</a>, remove <code>this.setLayout(null);</code></p>
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    1. POChange location JLabel on JPanel repaint
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    1. USmKorbel
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    1. COI know my code isn't runnable. It's a example so you may understand how we build it. 1. Frame of JFrame doens't make a difference 2. this._boardview is correct because i got a global variable BoardView _boardview. It is just isn't there in the example 3. okay 4. i tried paintComponent also but that didn't change anything as well 5. i will check that out 6. okay 7. okay
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    2. CObut it still isn't a answer to my question and that is why that trail of white is shown.
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    3. CO@yohannesdedope there isn't any another answer depends od code posted here
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