### Question:
ClusteredXYBarRenderer extends XYBarRenderer implements Cloneable, PublicCloneable, Serializable { @Override public boolean equals(Object obj) { if (obj == this) { return true; } if (!(obj instanceof ClusteredXYBarRenderer)) { return false; } ClusteredXYBarRenderer that = (ClusteredXYBarRenderer) obj; if (this.centerBarAtStartValue != that.centerBarAtStartValue) { return false; } return super.equals(obj); } ClusteredXYBarRenderer();  ClusteredXYBarRenderer(double margin, 
            boolean centerBarAtStartValue); @Override int getPassCount(); @Override Range findDomainBounds(XYDataset dataset); @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 boolean equals(Object obj); @Override Object clone();  }### Answer:
@Test public void testEquals() { ClusteredXYBarRenderer r1 = new ClusteredXYBarRenderer(); ClusteredXYBarRenderer r2 = new ClusteredXYBarRenderer(); assertEquals(r1, r2); assertEquals(r2, r1); r1 = new ClusteredXYBarRenderer(1.2, false); assertFalse(r1.equals(r2)); r2 = new ClusteredXYBarRenderer(1.2, false); assertEquals(r1, r2); r1 = new ClusteredXYBarRenderer(1.2, true); assertFalse(r1.equals(r2)); r2 = new ClusteredXYBarRenderer(1.2, true); assertEquals(r1, r2); }