How do I open a project with Java EE Eclipse?

Project> Open Project and Project> Close Project may not be the way you think they apply to projects that are already in the workspace and are closed / opened respectively. From Eclipse Documentation :

When a project is closed, it can no longer be modified in the Workbench, and its resources are no longer displayed in the Workbench, but they are still on the local file system. Closed projects require less memory. In addition, since they are not considered at build time, closing the project can improve build times.

You may be looking for File> New> Project , which will open the following wizard (select the type of project you want to create and follow these steps):

alt text http://help.eclipse.org/galileo/topic/org.eclipse.platform.doc.user/images/Image247_projsel_wiz.png

To import an existing Eclipse project, use File> Import> Existing Project into Workspace .