@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((amount == null) ? 0 : amount.hashCode());
result = prime * result + ((sku == null) ? 0 : sku.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null) return false;
if (getClass() != obj.getClass()) return false;
CartItem other = (CartItem) obj;
if (sku == null) {
if (other.sku != null) return false;
} else if (!sku.getId().equals(other.sku.getId())) return false;
return true;
}