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You are asked to write a Java program to calculate the commercial value of the stamps owned by a philatelist. Each philatelist has a name and a collection of stamps. The stamps can be divided into two groups: Group I and Group II. Each stamp has the following attributes: name, face value, and publication year. The commercial value of a stamp is calculated as follows:1. for a stamp in Group I, the commercial value is twice its face value,2. for a stamp in Group II, the commercial value is triple its face value.You need to follow the following interfaces:public interface IStamp { double get_faceValue();String get_name(); // return the name of a stamp Int get_publicationYear(); //return the Publication year of a stamp}public interface IPhilatelist { ArrayList get_allStamps(); void add_stamps(IStamp stmp);double get_totalCommercialValue(); } Your classes (Stamp_GroupI, Stamp_GroupII and Philatelist) implementing the above two interfaces, as appropriate, should NOT have any other public method.The test file is as follows:class Program { static void Main(string[] args) { IPhilatelist john = new Philatelist("John"); IStamp w1= new Stamp_GroupII("Yellow Stone",0.29, 1975); IStamp w2 = new Stamp_GroupI("Forever Freedom",0.45, 2011); IStamp w3 = new Stamp_GroupI("Forever BigBen",0.42, 2008); john.add_stamps(w1); john.add_stamps(w2); john.add_stamps(w3); System.out.println("Total Commercial value is" + john.get_totalCommercialValue()); } }
J2EE Java Website rebuild Project Description: We are seeking an experienced developer to re-build a Java/J2EE based Website. We are in requirement to reconstruct our website
Write a program of student Using a Class Objects of a class are always created on heap using "new" operator followed by constructor Student s = new Student ( ); // no po
This assignment models a simplified delivery company. It is composed of the following departments: receiving which contains a list of packages to be delivered, shipping which ship
there are N nodes in a graph, the graph isuni directional with M edges of these M nodes in a graph, there are K nodes which are important nodes. given initial position I within thi
1. Which of the following are not valid Java identifiers, and why? (a) wolVes (b) United(there is only one) (c) 87 (d) 5 3 (e) Real ale (f) isFound?by 2. A class Television
I do not understand how to do this? can someone help me?
What is Event Handler works? An event handler is a command which is used to call a function when an event happens, such as the user clicking a button or mouse.
RMI Object services: In addition to its remote object architecture, RMI gives some basic object services, which may be needed in a distributed application. 1. Object namin
how soon can you complete a project?
The program: 2 classes one called Student, one called Grades Functional Requirements: Ask for how many students u need to enter the program must: prompt the user to enter the
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