How can I initialise a static Map?

Question

How would you initialise a static Map in Java?

Method one: static initialiser
Method two: instance initialiser (anonymous subclass) or some other m

Answer 1

I like anonymous class, because it is easy to deal with it:

public static final Map numbers = Collections.unmodifiableMap(new HashMap() {
    {
        put(1, "some value");
                    //rest of code here
    }
});