@Override public boolean equals(Object o) { if (this == o) return true; if (o == null || getClass() != o.getClass()) return false; Child child = (Child) o; if (id != null ? !id.equals(child.id) : child.id != null) return false; if (name != null ? !name.equals(child.name) : child.name != null) return false; return true; }