// Fig. 8.15: PackageDataTest.java
// Package-access members of a class are accessible by other classes 
// in the same package.

public class PackageDataTest {
   public static void main(String[] args) {
      PackageData packageData = new PackageData();

      // output String representation of packageData 
      System.out.printf("After instantiation:%n%s%n", packageData);

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

      // output String representation of packageData
      System.out.printf("%nAfter changing values:%n%s%n", packageData);
   } 
} 

// class with package access instance variables
class PackageData {
   int number = 0; // package-access instance variable         
   String string = "Hello"; // package-access instance variable

   // return PackageData object String representation
   public String toString() {
      return String.format("number: %d; string: %s", number, string);
   } 
} 


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