java creating a set code example

Example 1: java create a set with values

Set<String> set = new HashSet<>(Arrays.asList("a", "b", "c"));

Example 2: set in java

SET: Can only store unique values, 
     And does not maintain order
- HashSet can have null, order is not guaranteed
- LinkedHashSet can have null and keeps the order 
- TreeSet sorts the order and don't accept null