Java Map implementation that returns a default value instead of null

Thanks to default methods, Java 8 now has this built in with Map::getOrDefault:

Map<Integer, String> map = ...
map.put(1, "1");
System.out.println(map.getOrDefault(1, "2")); // "1"
System.out.println(map.getOrDefault(2, "2")); // "2"