FunctionalApplicationTests.java

      List<String> stringList = Arrays.asList("Hello", "World", "How", "Are", "You", "Today");

        // imperative declaration
        List<String> filteredList = new ArrayList<>();

        for (String string: stringList) {
            if (string.equals("Hello") || string.equals("Are")) {
                filteredList.add(string);
            }
        }

        List<String> mappedList = new ArrayList<>();
        for (String string: filteredList) {
            mappedList.add(string + " String");
        }

        for (String string: mappedList) {
            System.out.println(string);
        }