Question

public Map<String, Boolean> zoom = new HashMap<String, Boolean>();

public void Toggle() {
        if(zoom.containsKey("test")){
            // Turning off
            zoom.remove("test");
        } else {
            // Turning on.
            zoom.put("test", false);
        }
    }

I use a HashMap to accomplish it, but i never use the Boolean.
So how can i get rid of the hashmap, without having too much problems?

Answer 1

Just change:

Map<String, Boolean> zoom = new HashMap<String, Boolean>();

to

Set<String> zoom = new HashSet<String>();

Then replace all calls to put(String, Boolean) with add(String), calls to remove won’t change, and calls to containsKey(String) are replaced with contains(String).