انا عضو جديد ارجومن كم شرح هذا الكود

public void startThread()

{

if(thread == null){

thread = new Thread(this);

thread.start();

}

}

public void stopThread()

{

if(thread != null){

thread.stop();

thread = null;

}

}

public void run()

{

while(true){

repaint();

try{ thread.sleep(1); }

catch( InterruptedException e ){}

}

}

public void update(Graphics g)

{

Dimension size = getSize();

if (doubleBuffer == null ||

doubleBuffer.getWidth(this) != size.width ||

doubleBuffer.getHeight(this) != size.height)

{

doubleBuffer = createImage(size.width, size.height);

}

if (doubleBuffer != null)

{

// paint to double buffer

Graphics g2 = doubleBuffer.getGraphics();

paint(g2);

g2.dispose();

// copy double buffer to screen

g.drawImage(doubleBuffer, 0, 0, null);

}

else{

// couldn’t create double buffer, just paint on screen

paint(g);

}

}