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What helloworld means is that you can have your object that has the string in it implement Comparable. After that all you need to do is Collections.sort(listOfObjectsHere) and it will automatically...

Well, using Collections.sort passing in a list of Strings it will automatically sort them alphabetically because thats how strings are sorted naturally just like ints would be 0,1,2,3,4 etc.

What...

You could create your own comparator and do it.

What are your sorting rules?

// Json

So lets say all items in the list are strings, this is what we do.



final List<String> letters = Arrays.asList(new String[] { "f", "g", "e", "o", "a", "y", "r" });
...