Initialization of dictionaries in Java

//Dictionary<String, String>
Map<String, String> languages = new HashMap<String, String>();
languages.put("ru", "russian");
languages.put("en", "english");

//Dictionary<Int, String>
Map<Integer, String> numbers = new HashMap<Integer, String>() {{
        put(1, "one");
        put(2, "two");
        put(3, "three");
}};

//Dictionary<Int, Employee>
Map<Integer, Employee> employees = new HashMap<Integer, Employee>(); 
employees.put(1, new Employee("Anton", "Pavlov"));
employees.put(2, new Employee("Elena", "Kirienko"));