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Refactor, with the right IDE this should take minutes. OOP witbout something like intellij or VS.NET is not fun.

What does OOP has anything to do with your IDE. I think you are referring to typings

OOP is often excruciatingly verbose and boilerplate which an IDE can help with.

You can do LISP in vi or emacs just fine, but for java some kind of IDE to handle the sheer data processing load of source editing is necessary.