Difference between Map<String, String> and Map<>?

Question

What is he difference between two approaches of instantiating a map:

  Map<String, String> map = new TreeMap<String, String>();

and

  Map<String, String> map = new TreeMap<>();

and which one is better?

Answer 1

They are equivalent. The second syntax (known as the diamond operator) was added in Java 7 and allows you to type less code.