DogTest.java Questions

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Program listing

// REFERENCES TUTORIAL
// Copyright (C) 1998-2016 Davin Pearson
// Website: http://davin.50webs.com/java-tutorials

class Flea
{
   /*
    * Properties of the class...
    */
   public String name;

   /*
    * Constructor of the class...
    */
   public Flea(String aName)
   {
      name = aName;
   }

   /*
    * Methods of the class...
    */
   public void describe()
   {
      System.out.println("I am a flea called " + name);
   }
}

class Dog
{
   /*
    * Properties of the class...
    */
   public String name;
   public int    age;
   public Flea   dogsFlea;

   /*
    * Constructor of the class...
    */
   public Turtle(String aName, int anAge, Flea aFlea)
   {
      aName    = name;
      age      = anAge;
      dogsFlea = aFlea;
   }
}

class DogTest
{
   /*
    *
    * The main method is the point of entry into the program...
    *
    */
   public static void main(String[] args)
   {
      Flea p = new Flea("Pop");
      Flea s = new Flea("Squeak");
      Flea z = new Flea("Zip");
   }
}

// QUESTIONS:

// (1) Fix the two errors in the Dog constructor.
// 
// (2) In the main method of the DogTest class, write code
// to call the "describe" method for each of the fleas
// referenced by p,s and z.
// 
// (3) In the main method of the DogTest class, write code
// to construct three dogs called Rex, Jimbo and Fido.  Note
// that the third parameter to the Dog class is of type
// Flea.  Therefore you will need to supply a Flea reference
// for each dog.  Make it so that Rex has a flea called Pop,
// Jimbo has a flea called Squeak, and Fido has a flea
// called Zip.

// HINT: If the flea called Pop is referenced by the
// variable name "p", then this reference should appear as
// the third argument in one of the calls to the Dog
// constructor.
// 
// (4) Write a describe method in the Dog class that works
// like the describe method in the Flea class.  Then call
// this method from the main method to print out the full
// statistics of the three dogs that you have just created
// in question (3).
// 
// (5) By copying the pattern of the Flea and Dog classes,
// write a class DogOwner that has three properties: name,
// salary and ownersDog.  Also write a three-parameter
// constructor for the DogOwner class that sets these
// properties.
// 
// (6) Add some code into the main method to construct three
// dog owners called Angus, Brian and Charles.  Make it so
// that Angus has a dog called Rex, Brian has a dog called
// Jimbo, and Charles has a dog called Fido.  Use the Dog
// references that you created in question (3) to achieve
// this.
// 
// (7) Write a describe method for the class DogOwner and
// add some code to the main method to call it for Angus,
// Brian and Charles.
// 
// (8) If your reference to the Angus object is called
// "a", then what is the value of the following:
//
//  a.ownersDog.dogsFlea.describe()
//
// Add some code to the main method to find out.
//