effect of private static final objects in java?

[Vinney Shanmugam]

I want to know what will be the effect of delcaring an object as

private static final object.

 class a{

  private static final a obj = new a();

  private int b;
  
  public int getB(){return b}

  }

  class b{

  how to access getB here???

  }

What is the use of declaring an object of class as private static final?

[Seetharaman Venkatasamy]

it is a constant which is encapsulated

[Jesper de Jong]

Creating a private static final object as in line 3 of your code doesn't do anything special to class a. Class a still has a public, no-args constructor (the one that the compiler automatically generates when you don't specify a constructor yourself).

So inside a method in class b, you can still do this:

a x = new a();
b y = a.getB();