在Java Eclipse中对库进行排序和排序

Question

In Eclipse, on many occasions i have had issues with the order in which libraries and jars of a project are loaded. ie Project -> BuildPath -> Configure Build Path -> Order and Export.

I have the following questions:

1. Are libraries loaded with preference?
2. If two libraries conflict, which one overrides the other?
3. Should the src folder be at the top or should it be the JRE System Library. If so, Why? Is this trivial?

Direct answers or references to reading material would be great.

Answer 1

A quick google and I found a good reference about this "Order and Export" tab, from here on stackoverflow.

The "Order and Export" tab in "Java Build Path"

Answer 2

在eclipse中快速浏览一下，我发现eclipse只允许在库组级别进行重新排序，而不是在库级别，因为问题是。