**What is the difference between Comparator and Comparable**
___


| Comparable interface | Comparator interface |
| ------------ | ------------ |
|  Present in **java.lang package** |Present in **java.util package**   |
|  Defines one important method i.e. <br> public int **compareTo**(Object obj); |Defines 2 method i.e.; <br>public int **compare**(Object obj1, Object obj2);<br> public boolean **equals**(Object object);|
| It is basically used for default **natural sorting order**  | This is preferred for **customized sorting order** |
|  This interface need to be implemented in the same class for which sorting is required | Separate class is required to implement Comparator interface  |
| Elements of List can be sorted using comparable interface using sort(); method of Collections class, as shown below<br>**Example**: Collection.sort(listItems);  |   Elements of List can be sorted using comparator interface using sort(); method of Collections class, as shown below<br>**Example**: Collection.sort(listItems, comparator);|
|  String & wrapper classes’ like Integer, Double, etc implement comparable interface |   There are very few classes’ which implements Comparator interface|