For each loop on Java HashMap

Question

A basic chat program I wrote has several key words that generate special actions, images, messages, etc. I store all of the key words and special functions in a HashMap. Key wor

Answer 1

Well, you can write:

for(String currentKey : myHashMap.keySet()){

but this isn't really the best way to use a hash-map.

A better approach is to populate myHashMap with all-lowercase keys, and then write:

theFunction = myHashMap.get(user.getInput().toLowerCase());

to retrieve the function (or null if the user-input does not appear in the map).