Java / Collections
Difference between Comparable and Comparator interface.
| Comparable. | Comparator. |
| Class whose objects to be sorted must implement this interface and to implement compareTo(Object) method. | Class whose objects to be sorted do not need to implement this interface. Instead a third class can implement this interface to sort and implement compare method. |
| Sorting logic must be in same class whose objects are being sorted. Hence this is called natural ordering of objects. | Sorting logic is in separate class. Hence we can write different sorting based on different attributes of objects to be sorted. |
| Collections.sort(List). Objects will be sorted on the basis of CompareTo method. | Collections.sort(List, Comparator). Objects will be sorted based on the Compare method in Comparator. |
| Comparable located in Java.lang package. | Comparator located in Java.util package. |
Dogecoin! Earn free bitcoins up to $250 now by signing up.
Earn bitcoins upto $250 (free), invest in other Cryptocurrencies when you signup with blockfi. Use the referral link: Signup now and earn!
Using BlockFi, don't just buy crypto - start earning on it. Open an interest account with up to 8.6% APY, trade currencies, or borrow money without selling your assets.
Join CoinBase! We'll both receive $10 in free Bitcoin when they buy or sell their first $100 on Coinbase! Available in India also.
Use the referral Join coinbase!
Invest now!!! Get Free equity stock (US, UK only)!
Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.
The Robinhood app makes it easy to trade stocks, crypto and more.
Webull! Receive free stock by signing up using the link: Webull signup.
More Related questions...
