### Question:
XYBarRenderer extends AbstractXYItemRenderer implements XYItemRenderer, Cloneable, PublicCloneable, Serializable { @Override public Object clone() throws CloneNotSupportedException { XYBarRenderer result = (XYBarRenderer) super.clone(); if (this.gradientPaintTransformer != null) { result.gradientPaintTransformer = ObjectUtils.clone(this.gradientPaintTransformer); } return result; } XYBarRenderer();  XYBarRenderer(double margin); static XYBarPainter getDefaultBarPainter(); static void setDefaultBarPainter(XYBarPainter painter); static boolean getDefaultShadowsVisible(); static void setDefaultShadowsVisible(boolean visible); double getBase(); void setBase(double base); boolean getUseYInterval(); void setUseYInterval(boolean use); double getMargin(); void setMargin(double margin); boolean isDrawBarOutline(); void setDrawBarOutline(boolean draw); GradientPaintTransformer getGradientPaintTransformer(); void setGradientPaintTransformer(
            GradientPaintTransformer transformer); ItemLabelPosition getPositiveItemLabelPositionFallback(); void setPositiveItemLabelPositionFallback(
            ItemLabelPosition position); ItemLabelPosition getNegativeItemLabelPositionFallback(); void setNegativeItemLabelPositionFallback(
            ItemLabelPosition position); XYBarPainter getBarPainter(); void setBarPainter(XYBarPainter painter); boolean getShadowsVisible(); void setShadowVisible(boolean visible); double getShadowXOffset(); void setShadowXOffset(double offset); double getShadowYOffset(); void setShadowYOffset(double offset); double getBarAlignmentFactor(); void setBarAlignmentFactor(double factor); @Override XYItemRendererState initialise(Graphics2D g2, Rectangle2D dataArea,
            XYPlot plot, XYDataset dataset, PlotRenderingInfo info); @Override LegendItem getLegendItem(int datasetIndex, int series); @Override void drawItem(Graphics2D g2, XYItemRendererState state,
            Rectangle2D dataArea, PlotRenderingInfo info, XYPlot plot,
            ValueAxis domainAxis, ValueAxis rangeAxis, XYDataset dataset,
            int series, int item, CrosshairState crosshairState, int pass); @Override Range findDomainBounds(XYDataset dataset); @Override Range findRangeBounds(XYDataset dataset); @Override Object clone(); @Override boolean equals(Object obj);  }### Answer:
@Test public void testCloning() throws CloneNotSupportedException { XYBarRenderer r1 = new XYBarRenderer(); XYBarRenderer r2 = (XYBarRenderer) r1.clone(); assertNotSame(r1, r2); assertSame(r1.getClass(), r2.getClass()); assertEquals(r1, r2); }