Eclipse doesn't identify my project as Java

Question

I import a project from the SVN, which is a Java project.

When I open one of it class, for example, I can't use open declaration\\open implementation\\ open return type, and so on..

It just show me the class as a text file. How can I fix it?

Answer 1

Go to project->properties->facets->java and enable the java facet

Alternatively you can open the .project file and add the java nature eclipse is adding for new java projects:

<projectDescription>
    <buildSpec>
        <buildCommand>
            <name>org.eclipse.jdt.core.javabuilder</name>
            <arguments>
            </arguments>
        </buildCommand>
    </buildSpec>
    <natures>
        <nature>org.eclipse.jdt.core.javanature</nature>
    </natures>
</projectDescription>