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Thread: Design Java Generic Container-please help!!!

  1. #1
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    Default Design Java Generic Container-please help!!!

    Hi all,
    I am currently learning Java from a university course. I am stuck with one of my assignment. I am a database developer, object-oriented is not my thing. Please help out!

    The given Products.java class is following:

    abstract class Products {
    protected float price;

    // return the price of a particular product
    abstract float price();
    }

    //------------------------------------------------------------

    class ComputerPart extends Products {
    public ComputerPart(float p) {
    price = p;
    }

    public float price() { return price; }
    }

    class Motherboard extends ComputerPart {
    protected String manufacturer;
    public Motherboard(String mfg, float p) {
    super(p);
    manufacturer = mfg;
    }
    public String getManufacturer() { return manufacturer; }
    }

    class RAM extends ComputerPart {
    protected int size;
    protected String manufacturer;
    public RAM(String mfg, int size, float p) {
    super(p);
    this.manufacturer = mfg;
    this.size = size;
    }
    public String getManufacturer() { return manufacturer; }
    }

    class Drive extends ComputerPart {
    protected String type;
    protected int speed;
    public Drive(String type, int speed, float p) {
    super(p);
    this.type = type;
    this.speed = speed;
    }
    public String getType() { return type; }
    public int getSpeed() { return speed; }
    }


    class Peripheral extends Products {
    public Peripheral(float p) {
    price = p;
    }
    public float price() { return price; }
    }

    class Printer extends Peripheral {
    protected String model;
    public Printer(String model, float p) {
    super(p);
    this.model = model;
    }
    public String getModel() { return model; }
    }

    class Monitor extends Peripheral {
    protected String model;
    public Monitor(String model, float p) {
    super(p);
    this.model = model;
    }
    public String getModel() { return model; }
    }

    class Service extends Products {
    public Service(float p) {
    price = p;
    }
    public float price() { return price; }
    }

    class AssemblyService extends Service {
    String provider;
    public AssemblyService(String pv, float p) {
    super(p);
    provider = pv;
    }
    public String getProvider() { return provider; }
    }

    class DeliveryService extends Service {
    String courier;
    public DeliveryService(String c, float p) {
    super(p);
    courier = c;
    }
    public String getCourier() { return courier; }
    }

    //-------------------------------------------------------
    class Cheese extends Products {
    public Cheese(float p) {
    price = p;
    }
    public float price() { return price; }
    }

    class Cheddar extends Cheese {
    public Cheddar(float p) {
    super(p);
    }
    }
    class Mozzarella extends Cheese {
    public Mozzarella(float p) {
    super(p);
    }
    }

    class Fruit extends Products {
    public Fruit(float p) {
    price = p;
    }
    public float price() { return price; }
    }
    class Apple extends Fruit {
    public Apple(float p) {
    super(p);
    }
    }
    class Orange extends Fruit {
    public Orange(float p) {
    super(p);
    }
    }



    The first requirement is design a generic container called GenericOrder that acts as a collection of an arbitrary number of objects in Products.java. Design a mechanism that gives each instance of the container a unique identifier. Implement as many methods as necessary. You must use Java generics features.

    Please help me with this in anyway you can think of, i am totally lost on this.

    Thanks in advance


  2. #2
    Member Darryl.Burke's Avatar
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    Default Re: Design Java Generic Container-please help!!!

    This thread has been cross posted here:

    http://www.java-forums.org/new-java/34687-java-generic-container-question-please-help.html

    Although cross posting is allowed, for everyone's benefit, please read:

    Java Programming Forums Cross Posting Rules

    The Problems With Cross Posting

    db


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