如何查看java web app，就像它是服务器上的最新版本一样？

I have been browsing tutorials but all are just gibberish since I do not know most of the terms. I am new to java and most of things I do are trial and error. We have this java web app that has around 4 solutions in which we checked in our codes using SVN. I can run the app in the local but not as a whole app. We can only see it as a whole if We build it in a server that says ....\hudson at the end. That is the only time I can see if my checked in codes are working well with other modules written in grails and in gwt. I was wondering if I can do this via local? Like how I do it in IIS for an asp .net web app. My prob is I can not see all frames when running it through IDE. I always make the mistake that I run the gwt project, it is working fine, then I run the grails working fine. but when I check it in the build, something gets broken. The same problem when I debug using cookies. If the cookie is being passed by a grail module toa gwt module, how can I do that if I can't run both at the same time? :(. The build in hudson is for everyone to see and I do not want to check in the codes I made before I am 100% it is working and nothing gets broken somewhere in the project. I have been browsing tutorials but all are just