@Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; SimilarityScore other = (SimilarityScore) obj; if (item == null) { if (other.item != null) return false; } else if (!item.equals(other.item)) return false; if (score == null) { if (other.score != null) return false; } else if (!score.equals(other.score)) return false; return true; }