public class SomeSortOfFactory {

    private static Map<String,Class> myClassMap;
    static {
        myClassMap = new HashMap<String,Class>();
        myClassMap.put("foo", Foo.getClass());
        myClassMap.put("bar", Bar.getClass());
        myClassMap.put("baz", Baz.getClass());
    }

    public static FBBSuperClass create(String className) {
        if (myClassMap.containsKey(className) {
            return myClassMap.get(className).newInstance();
        }
        return null;
    }
}