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The DigitalClock doesn't flicker, but this illustrates the technique on a short example.
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public void class DigitalClock extends java.applet.Applet
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implements Runnable
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{ . . .
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Image offscreenImg;
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Graphics og;
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public void init ( )
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{ offscreenImg = createImage (getSize( ).width, getSize( ).height);
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og = offscreenImg.getGraphics ( );
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}
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public void paint ( Graphics g )
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{ og.setFont ( theFont );
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og.drawString ( theDate.toString ( ), 10, 50 );
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g.drawImage ( offscreenImg, 0, 0, this);
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}
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public void update ( Graphics g)
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{ paint ( g); }
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}
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