A class calling methods from external class

[Aaron5466]

I'm pretty new to Java, having taken only part of a class in data structures using Java. I'm also not that familiar with Object Oriented coding and terminology, so I apologize if I misuse it. The way I learned to code Java was to write a short main class that calls methods from an external class. I have a class that I want to keep pristine. So, I'd like to have a main class call a middle class that I modify and have that middle class call the class I'm keeping pristine. But, I can't get it to work. Any suggestions?

[Tolls]

Not too sure what a "pristine" class is.

[ojn]

My suggestion is that you go through the tutorials and ask a specific question about your code when you get stuck on something.

[Aaron5466]

Thanks. I will go through tutorials. By pristine, I mean that I was given a class by the professor, and I want to make sure I don't ruin it, so I'd rather use it and add new features to another class that works with it.

[Tolls]

You could extend the original class, allowing you to just change/add the bits you want while keeping the rest.
Then just call that one from main.