Eclipse Helios does not recognize Java code beside Scala code

Question

I imported a Maven project (File > Import... > Maven > Existing Maven Projects) using Scala source code as well as Java source code into Eclipse Helios. While the Scala source get's recognized correctly the Java code is not recognized.

How can I make Eclipse understand the Java part as well?

Answer 1

1. Have you tried adding the /src/main/java/ folder as a source folder via:

   [right click] > Build Path > Use as Source Folder

   This should result in a <classpathentry> in your .classpath file.

2. Sometimes the .project file misses the Java nature completely:

   <?xml version="1.0" encoding="UTF-8"?>
   <projectDescription>
       ...
       <natures>
           ...
           <nature>org.eclipse.jdt.core.javanature</nature>
       </natures>
   </projectDescription>
   

Note: your package / project explorer view might be configured to filter '.* resources'. You can also access these files via Strg + Shift + R.