Well, in addition to making my prime number generator super efficient, I've now started to learn about methods, arrays, and strings.

Also, I've coded the integers for my text adventure:

public class MedievalTextAdventure {
    public static void main (String args[]) {
        boolean NOTE = false, HOUSE = false, TREASURE = false, HAMMER = false, FROGS = false, FISH = false, FISHINGROD = false, GOLD = false, DOCTOR = false, OLDKEY = false, BUTTERFLYNET = false, HOUSE1 = false, HOUSE2 = false, HOUSE3 = false, HOUSE4 = false, HOUSE5 = false, ABANDONEDHOUSE = false, LAKE1 = false, LAKE2 = false, LAKE3 = false, LAKE4 = false, LAKE5 = false, LAKE6 = false, DOCTORSHOUSE = false, FISHMONGERY = false, gamerunning = true;
    }
}