Java: how to access a class by a name saved in a variable?

Question

I have something like this:

String currentRoom = "NameOfRoom"; static room NameOfRoom = new room();

And I want to activate a function that is inside the room by accessing it through the variable currentRoom.

Is it possible?

Thanks in advance, Ethan

Possible duplicate of Creating a variable name using a String value — CloudPotato
– CloudPotato, Commented Feb 7, 2017 at 10:23
This is most certainly not what you want to do. There are better ways to do this. Reflection can do this, but most of the times, you don't. — Steffen
– Steffen, Commented Feb 7, 2017 at 10:24
Also note that there is a widely accepted convention in java that class names should start with an upper-case letter, while variable names should start with a lower-case letter. — Hulk
– Hulk, Commented Feb 7, 2017 at 11:19

rkosegi · Accepted Answer · 2017-02-07 10:22:58Z

Not sure if I got you.

But you can use Map to maintain mapping between strings and object instances.

Map<String, Object> map = new HashMap<>(); map.put("NameOfRoom", new Room());

Now retrieve from map

map.get("NameOfRoom")

1 Answer 1