RMI服务器java.security.AccessControlException：访问被拒绝

I'm building a RMI application and I have the following server class. However, when I run it in eclipse I get the following exception. What is wrong and how can I fix it? I've spent the last 2 days reading about similar problems online but I couldn't find the solution. I suspect it has something to do with a policy file, but I have no idea how to use one. Also if the problem is with the way I run it can you please give me directions for doing so in eclipse.I'm building a RMI application and I have the f