JHFilter implements BufferedImageOp { @Override public RenderingHints getRenderingHints() { return null; }  @Override BufferedImage createCompatibleDestImage(BufferedImage src, ColorModel dstCM); @Override Rectangle2D getBounds2D(BufferedImage src); @Override Point2D getPoint2D(Point2D srcPt, Point2D dstPt); @Override RenderingHints getRenderingHints(); int[] getRGB(BufferedImage image, int x, int y, int width, int height, int[] pixels); void setRGB(BufferedImage image, int x, int y, int width, int height, int[] pixels);  }
@Test public void test_getRenderingHints() { final TestFilter filter = new TestFilter(); Assertions .assertThat(filter.getRenderingHints()) .isNull(); }