Any nice way to make two immutable objects refer to eachother?

Question

Take these two Java classes:

class User {
   final Inventory inventory;
   User (Inventory inv) {
       inventory = inv;
   }
}

class Inventory {
   final User         


        

Answer 1

If you are only interested in JVM bytecode and don't care about coding in Java specifically, perhaps using Scala or Clojure could help. You'll need some kind of letrec machinery.