How do I initialize a final field in constructor's body?

Question

Basically, that's what I'm trying to do:

  ClassName   {     final OtherClass field;      ClassName()     {       field = new OtherClass(this);     }   } 

Answer 1

It's not possible to assign a final field in a constructor body. The final field needs to be assigned before the constructor body, in the initializer list or on declaration:

class ClassName {     final OtherClass field = new OtherClass(); // Here      ClassName()         : field = new OtherClass() // or here      {           } } 

As you can't use this in the initializer list or on the declaration, you can't do what you plan to do.