Maven "class file for ... not found" compilation error

Question

I have a Maven project. When I try to build it with Maven, I get this error:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.
  3.2:compile (default-compile) on project myProject: Compilation failure:
  Compilation failure:
[ERROR] ClassA.java:[32,38] cannot access ClassB
[ERROR] class file for ClassB not found

ClassB is inside another artifact, and that artifact is in the local repository. In fact, I have no problems building this project with the m2eclipse Maven plugin. It's only when I run mvn compile that the build fails.

What do I have to do to build from the command line?

Answer 1

Eclipse might be bypassing your pom dependencies and 'helping' you by finding a dependency that is not in your pom. Then when you run from command line eclipse isn't there to help anymore. I would double check your pom that you explicitly state dependency. You can also try

mvn dependency:analyze

for more info.

Answer 2

That looks like you have defined a usual class within the src/test/java instead of the src/main/java area which is sometimes the problem cause the eclipse things behaves a little bit different.