The below code currently triggers several errors to be reported in the Java editor. The issue is that Scalac compiles (in many cases, not all though) private entities into public, while we do not emulate the compiler, and hence private entities are exposed to JDT with no modifications (i.e., as private ).

//scala/Top.scala
package scala

private trait Top {
  protected[scala] def foo
}

private abstract class ATop extends Top {
  final protected[scala] def foo {}
}

// J.java
import scala.ATop;

public class J extends ATop {
	void foo2() {
		super.foo();
	}
}