### Question:
CategoricalPrediction extends Prediction { @Override public boolean equals(Object o) { if (!(o instanceof CategoricalPrediction)) { return false; } CategoricalPrediction other = (CategoricalPrediction) o; return Arrays.equals(categoryCounts, other.categoryCounts); } CategoricalPrediction(int[] categoryCounts);  CategoricalPrediction(double[] categoryCounts); double[] getCategoryCounts(); double[] getCategoryProbabilities(); int getMostProbableCategoryEncoding(); @Override FeatureType getFeatureType(); @Override void update(Example train); synchronized void update(int encoding, int count); @Override boolean equals(Object o); @Override int hashCode(); @Override String toString();  }### Answer:
@Test public void testEquals() { int[] counts = { 0, 1, 3, 0, 4, 0 }; CategoricalPrediction prediction = new CategoricalPrediction(counts); assertNotEquals(prediction, new CategoricalPrediction(new int[] { 1, 2, 4, 5, 6, 7 })); }