将Java源代码导入Eclipse以避免混淆引用的正确方法是什么？

I created a java project and then tried to import Java source code from two different projects. I've been working on it for a few hours, deleting and re-creating the project dozens of times to try to reconcile all of the messed up references between these two projects - which other people say are supposed to work together reliably.I created a java project and then tried to impo