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From: iMatt <iMattThomas@zoho.com>
Subject: Re: Swing actions in separate code files - how
Newsgroups: comp.lang.java.gui
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Xref: csiph.com comp.lang.java.gui:5442

I discovered a method which allows a central class to provide data access to satellite classes. I needed a method to separate code into several files, and this has proven effective. The satellite classes have full data access to all but private variables, and can directly change data in the central class. This concept has been tested successfully on a large scale project. See what you think about it.

<code>
    // Get the access of global while retaining priveleges.
    // You can access variables in one class from another, with provisions.
    // The primitive must be protected or no modifier (seen in example).

    // the first class
    public class farm{

      int eggs; // an integer to be set by constructor
      fox afox; // declaration of a fox object

      // the constructor inits
      farm(){
        eggs = 4;
        afox = new fox(); // an instance of a fox object

        // show count of eggs before the fox arrives
        System.out.println("Count of eggs before: " + eggs);

        // call class fox, afox method, pass myFarm as a reference
        afox.stealEgg(this);

        // show the farm class, myFarm, primitive value
        System.out.println("Count of eggs after : " + eggs);

      } // end constructor

      public static void main(String[] args){

        // instance of a farm class object
        farm myFarm = new farm();

      }; // end main

    } // end class

    // the second class
    public class fox{

      // theFarm is the myFarm object instance
      // any public, protected, or "no modifier" variable is accessible
      void stealEgg(farm theFarm){ --theFarm.eggs; }

    } // end class
</code>


iMatt
--

http://compgroups.net/comp.lang.java.gui/