when to implement comparable and when to implement equals in Java -


in java, when should implement comparable<something> versus implementing equals method? understand every time implement equals have implement hash code.

edit

based on answers getting below:

is safe if implement comparable don't need implement equals , hashcode? in: whatever can accomplish equal included in compareto? example, want able compare 2 bsts equality. implementing hashcode seems daunting; comparable sufficient?

if ever need compare them equality (or put them in hashmap or hashset same) need implement equals , hashcode.

if objects have implicit order , indend sort them (or put them in treemap or treeset sorting) must implement comparable or provide comparator.


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