Re: java heap space

luca schwarz wrote:


Please refrain from top-posting. I find it most confusing.


Your complete code tells the story. But first, I
will repost your code as an SSCCE*. An SSCCE
is a form of the code inteded to be a (short) self-contained,
compilable example of the problem.

Your code fulfilled most of that description, but
an extra tip is to rework it so it is all in 'one Java file'**
which can be achieved by demoting classes with no
'main()' from 'public' to '' (default/package).

** This is not good for 'real' code, but we are just
trying to sort a basic problem - so it is fine.

Here is what I mean..
<sscce>
public class Start {

   public static void main(String[] args)
   {
      new Control();
   }
}

class Control
{
   // GOTO create model
   Model theModel= new Model();

   public Control()
   {
      System.out.print("Control-Constructor run");
   }
}

class Model
{
   // GOTO create control
   Control theControl= new Control();
}
</sscce>

I put some comments in that code, to indicate why it
is failing, but here is a version that (to the best of my
current understanding of the code - which is 'not much')
does what you are attempting to achieve (without the
recursive element!).

<sscce>
public class StartOnce {

   public static void main(String[] args)
   {
      new Control();
   }
}

class Control
{
   // Declare model
   Model theModel;

   public Control()
   {
      // hand the model a reference to this Control
      theModel = new Model(this);
      System.out.println("Control-Constructor run");
   }
}

class Model
{
   // Declare control
   Control theControl;

   Model(Control control) {
      // associate the Control with our Model
      theControl = control;
   }
}
</sscce>

Each of control and model have a reference to 'the'
*single* instance of the other.

* The full description of the SSCCE, along with
why it is so handy for both debuggin and code
postings, can be found here.
<http://www.physci.org/codes/sscce/>

BTW - these are very simple questions, and there is
a group better suited to those learning Java, it is..
  comp.lang.java.help
...I highly recommend it.

Andrew T.