### 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); }