@Override
public void flip(int x1, int y1, int x2, int y2, BufferCapabilities.FlipContents flipAction) {
final BufferedImage buffer = (BufferedImage) getBackBuffer();
if (buffer == null) {
throw new IllegalStateException("Buffers have not been created");
}
final Graphics g = getGraphics();
try {
g.drawImage(buffer, x1, y1, x2, y2, x1, y1, x2, y2, null);
} finally {
g.dispose();
}
if (flipAction == BufferCapabilities.FlipContents.BACKGROUND) {
final Graphics2D bg = (Graphics2D) buffer.getGraphics();
try {
bg.setBackground(getBackground());
bg.clearRect(0, 0, buffer.getWidth(), buffer.getHeight());
} finally {
bg.dispose();
}
}
}
