Handling private fields in Scala traits when implementing them in Java

Question

When implementing a Scala trait, one has to implement the trait's methods and the simply call the respective static method on Foo$class.class. I'm not sure however how to deal with private fields which are defined in the trait.

That is, if there is a field _something in the trait, if I don't implement _something_$eq() and _something(), the compiler yells at me. My assumption is that I have to create a _something field in my implementing class.

I just want to confirm that this is the correct way of handling this issue.

IttayD · Accepted Answer · 2011-06-09 04:57:45Z

2

Yes, create the private field in the class

Note you also need to call the init method of the Foo$class module

If you want to see exactly what you need to do, just create a Scala class that extends Foo, compile it, and then use a decompiler (jd-gui) to see how it was generated.

answered Jun 9, 2011 at 4:57

IttayD

29.3k28 gold badges129 silver badges180 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

pondermatic Over a year ago

Thanks. And thanks for the extending the class trick. I did originally look at the scala code in jd-gui, but not with a custom class.

Collectives™ on Stack Overflow

Handling private fields in Scala traits when implementing them in Java

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related