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