To fully take full advantage of SonarQube in Eclipse, it is recommended that your project is already being be analyzed on a regular basis by SonarQube. Indeed, you'll get features such as only displaying new issues that you have introduced.However, if you want to give SonarQube in Eclipse a quick try, you just have to first declare your project through the SonarQube web interfaceRegular analysis allows the Eclipse plugin to distinguish between existing issues and any new ones you introduced.
If your project is not already under analysis, you'll need to declare it through the SonarQube web interface.
Once your project exists in SonarQube, you're ready to get started with SonarQube in Eclipse.
Setting SonarQube Servers
To do so, right-click on the project in the Project Explorer, and then SonarQube > Change Project Association...:
Unlinking a Project
To do so, right-click on the project in the Project Explorer, and then SonarQube > Remove SonarQube Nature: