### Question:
StandardCategorySeriesLabelGenerator implements
    CategorySeriesLabelGenerator, Cloneable, PublicCloneable, Serializable { @Override public int hashCode() { int result = 127; result = HashUtils.hashCode(result, this.formatPattern); return result; } StandardCategorySeriesLabelGenerator();  StandardCategorySeriesLabelGenerator(String format); @Override String generateLabel(CategoryDataset dataset, int series); @Override Object clone(); @Override boolean equals(Object obj); @Override int hashCode(); static final String DEFAULT_LABEL_FORMAT; }### Answer:
@Test public void testHashCode() { StandardCategorySeriesLabelGenerator g1 = new StandardCategorySeriesLabelGenerator(); StandardCategorySeriesLabelGenerator g2 = new StandardCategorySeriesLabelGenerator(); assertEquals(g1, g2); assertEquals(g1.hashCode(), g2.hashCode()); }