Nick Heiner Nick Heiner - 1 year ago 70
Java Question

When should a class be Comparable and/or Comparator?

I have seen classes which implement both Comparable and Comparator. What does this mean? Why would I use one over the other?

Dan Dan
Answer Source

The text below comes from Comparator vs Comparable


A comparable object is capable of comparing itself with another object. The class itself must implements the java.lang.Comparable interface in order to be able to compare its instances.


A comparator object is capable of comparing two different objects. The class is not comparing its instances, but some other class’s instances. This comparator class must implement the java.util.Comparator interface.

Recommended from our users: Dynamic Network Monitoring from WhatsUp Gold from IPSwitch. Free Download