Instantiating a interface CharSequence

Question

CharSequence[] items = { “Google”, “Apple”, “Microsoft” };

if CharSequence is an interface then, in the above example aren't we instantiating a interface?

Answer 1

You're instantiating a String array and then assigning it to variable that has a CharSequence array type. This works because String is assignable to (implements) CharSequence. Here's a couple more examples:

CharSequence cs = "Whatever";
List<Integer> list = new ArrayList<>();

So you're actually instantiating concrete types and assigning them to a variable/field that has an interface type.