not sure if I should search or sort my hashmap

Question

Hi I have a list of people with their ages, I need to find those who are more than 30 years old, is there any possibility to search in a hashmap ? (please note that I may need

Answer 1

HashMapiteration order is 'not predictable' (that's to say that if you sort, and than insert keys, in a determinate order when you later try to iterate the keys the order is not the same).

Use a LinkedHashMap instead.