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(Package Inheritance Hierarchy) Package-delivery services, such as FedEx®, DHL® and UPS®, offer a number of different shipping options, each with specific costs associated. Create an inheritance hierarchy to represent various types of packages. UsePackage as the base class of the hierarchy, then include classes TwoDayPackage and OvernightPackage that derive fromPackage. Base class Package should include the name, address, city, state and zip code for the package's sender and recipient, and instance variables that store the weight (in ounces) and cost per ounce to ship the package. Package's constructor should initialize these private instance variables with public properties. Ensure that the weight and cost per ounce contain positive values. Package should provide a public method CalculateCost that returns a decimal indicating the cost associated with shipping the package. Package's CalculateCost method should determine the cost by multiplying the weight by the cost per ounce. Derived class TwoDayPackage should inherit the functionality of base class Package, but also include an instance variable that represents a flat fee the shipping company charges for two-day delivery service. TwoDayPackage's constructor should receive a value to initialize this instance variable. TwoDayPackage should redefine method CalculateCost so that it computes the shipping cost by adding the flat fee to the weight-based cost calculated by base class Package's CalculateCost method. ClassOvernightPackage should inherit directly from class Package and contain an instance variable representing an additional fee per ounce charged for overnight delivery service. OvernightPackage should redefine method CalculateCost so that it adds the additional fee per ounce to the standard cost per ounce before calculating the shipping cost. Write a test application that creates objects of each type of Package and tests method CalculateCost.
Using the above thread program, now create 20 threads in your program and run them. No need to wait for the keyboard in each thread, just print "Hello" and its thread id in each t
What is hash Map
SMTP (Simple Mail Transfer Protocol) permits two mail servers to communicate using a easy language, and gives a step-by-step protocol for exchanging information. SMTP delivers m
Using this module we can keep up the database code clean and easy, and prevent problems that result from a failure to close database resources. A new layer of meaningful exceptions
Design pattern : As you may look from the diagram given below, containers collect components. Sometimes you want to accumulate a container to another container. So, a container co
I need integrate template to Java system Project Description: We have around 60 files for a java backend and want to implement a template, the system is complete it requires
Alia is appearing for the board exams. In order to qualify for the next class Alia need to get exactly X credits. In current semester Alia has to study N number of subjects, and ev
Application Rewrite Project Description: There is an app that I want to be rewritten in order to support multiple profiles. The App is an OTP generator. It is required to
When should a method be static? • Neither reads from nor writes to example fields • Independent of the state of the object • Mathematical methods which accept arguments, appl
hi there I have some problem on java .. can u do it for me
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