A collection of useful utilities
Its so lazy that there isn't even an 'a' in the name! A decorator for a java.util.Map that will load a value into the map if it doesn't already exist. See class for examples.
https://code.google.com/p/guava-libraries/wiki/IdeaGraveyard
There is a slight difference between this implementation and what is explained by Google. Unless you provide a ValueFactory, the get method is just a pass-through to the underlying map. It is similar to using getOrElse in other languages, but it loads the value into the map before it is returned.
You can, but Commons-Collections is not Generically typed :(