AbstractSuperClass.java

/**
 * given super-class from a 3rd-party library
 */
abstract class AbstractSuperClass<T extends AbstractParamClass> {
  // ...
  
  abstract static class AbstractParamClass {
    // ...
  }
}

MyClass.scala

// can I somehow pass MyParam to the super-class while still being 
// able to access MyType from MyParam, without having to specify 
// it as MyClass[MyParam]?

abstract class MyClass extends AbstractSuperClass[MyParam] { // does not work
  type MyType
  
  class MyParam(val t : MyType) extends AbstractParamClass {
  }
}