How can I create a ClassLoader which will use a particular classpath?

Question

在Java中，如何创建将使用特定类路径（可能只是一个jar文件）的ClassLoader？

Answer 1

您创建一个URLClassLoader对象。

Answer 2

Here is a good article on class loading:

http://onjava.com/pub/a/onjava/2005/01/26/classloading.html

Answer 3

Indeed, create a URLClassLoader as pointed out by @bmargulies. It's pretty easy to use, just pass an array of URLs into the constructor.

Maybe also check this thread and, in particular, this post for some tips on how to use Java (hierarchical) ClassLoaders. I don't know what you want to do exactly but you may find it useful.