// Fig. 8.16: PackageDataTest.java
// Classes in the same package (i.e., the same directory) can
// use package access data of other classes in the same package.

// Java extension packages
import javax.swing.JOptionPane;

public class PackageDataTest {

   // Java extension packages
   public static void main( String args[] )
   {
      PackageData packageData = new PackageData();

      // append String representation of packageData to output
      String output = 
         "After instantiation:\n" + packageData.toString();

      // change package access data in packageData object
      packageData.number = 77;     
      packageData.string = "Good bye";

      // append String representation of packageData to output
      output += "\nAfter changing values:\n" + 
         packageData.toString();

      JOptionPane.showMessageDialog( null, output,
         "Demonstrating Package Access",
         JOptionPane.INFORMATION_MESSAGE );

      System.exit( 0 );
   }

}  // end class PackageDataTest

// class with package access instance variables
class PackageData {
   int number;     // package access instance variable
   String string;  // package access instance variable

   // constructor
   public PackageData() 
   { 
      number = 0; 
      string = "Hello";
   }               

   // convert PackageData object to String representation
   public String toString() 
   {
      return "number: " + number + "    string: " + string;
   }

}  // end class PackageData


/**************************************************************************
 * (C) Copyright 2002 by Deitel & Associates, Inc. and Prentice Hall.     *
 * All Rights Reserved.                                                   *
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