实现加载大量资源的共享类的优雅方法（在Java中）

I have several classes which work as wrappers over some heavy libs, such as parsers, taggers, and other resources. All these libs have one thing in common: they have a load/init method which takes a serialized model (a large file) as input, and return a class that can be used to do concrete things such as parsing text.I have several classes which work as wrappers o