cyrilletuzi/hashmap.java

## hashmap.java
Map<String, String> user = new HashMap<>();
user.put("firstName", "Henri");
user.put("lastName", "Bergson");
user.get("firstName");
	Map<String, String> user = new HashMap<>();
	user.put("firstName", "Henri");
	user.put("lastName", "Bergson");
	user.get("firstName");