Why "no projects found to import"?

This answer is same as Laura's answer , however, in new eclipse versions you will not be able to see a "create project from existing source" option.

Hence you can do this instead:

• Goto File > New > Project

• Select the type of project, click Next

• Uncheck Use default location

• Click on Browse to navigate to your source folder, or type in the path to your source

• Click Finish

Taken from this discussion forum in eclipse.org

Eclipse is looking for eclipse projects, meaning its is searching for eclipse-specific files in the root directory, namely .project and .classpath. You either gave Eclipse the wrong directory (if you are importing a eclipse project) or you actually want to create a new project from existing source(new->java project->create project from existing source).

I think you probably want the second one, because Eclipse projects usually have separate source & build directories. If your sources and .class files are in the same directory, you probably didn't have a eclipse project.