Helpful Reference: Iterating Through A Map

This is probably one of the most useful references I use, that I can never remember. I bookmark my references and keep going back. I'm putting it here just in case the other one disappears.

An example of a java HashMap is as follows:

Map<Integer, String> myMap = new HashMap<>();

It can contain only objects (no primitives), and you can iterate through the keys, the values, or both.

Iterating through the keys:

for(Integer key : myMap.keySet()) {

    ...

}

Iterating through the values:

for(String value : myMap.values()) {
    ...
}

Iterating through both the keys and the values:
for(Map.Entry<Integer, String> entry : myMap.entrySet()) {
    Integer keyVal = entry.getKey();
    String val = entry.getValue();
    ...
}