How to get values and keys from HashMap?

Question

I\'m writing a simple edit text in Java. When the user opens it, a file will be opened in JTabbedPane. I did the following to save the files opened:

Answer 1

To get values and keys you could just use the methods values() and keySet() of HashMap

public static List getValues(Map map) {
    return new ArrayList(map.values());
}

public static List getKeys(Map map) {
    return new ArrayList(map.keySet());
}