I read some articles about how to set up eclipse and maven to create a new empty ear project but all solutions weren\'t complete or are to old.
I believe that I need
Creating the projects via console and importing them via m2eclipse would be the best way, as you can read it in the comments of your question.
Start off with this line in your console
mvn archetype:generate
Then use the archetype maven-archetype-j2ee-simple
This will generate you a project structure for ejb, ear and web projects. Otherwise you can create 3 simple projects maven-archetype-quickstart on your own and add the concering plugins
Here is another post, handling your problem: Maven2: Best practice for Enterprise Project (EAR file)
Another nice example you can find here