<p>I am going to be using Subversion for source control on a new J2EE web application. What directory structure will you recommend for organizing code, tests and documentation?</p>

I usually have
```
Project Directory
  src - actual source
  doc - documentation
  lib - libraries referenced from source
  dep - installation files for dependencies that don't fit in lib
  db  - database installation script
```
In work with Visual Studio, I'm not sure if this works the same in the java world. But i usually put stuff in different project folders in src. For each source project there's a separate test project. Build files go in the main project directory. I usually put a README there too documenting how to setup the project if it needs more than just checking out.
EDIT: This is the structure for a single working checkout of the project. It will be duplicated for each branch/tag in your revision control system (remember, in most SVN system, copies are cheap). The above example under Subversion would look like:
```
```
/project
    /trunk
        /src
        /doc
        /...
    /branches
        /feature1
            /src
            /doc
            /...
        /feature2
            /src
            /doc
            /...
```
```