讲解：COMP201、Java、software、JavaJava|R

COMP201 Assignment 11 DetailsModule COMP201Weighting 20% of module gradeNEW Deadline 12 noon, Tuesday 12th November 2019Purpose of Assignment To assess student ability to analyse, generate, and document user requirements;to assess student ability to create a software product that is compliant with user requirements.Learning Outcomes Assessed: The following learning outcomes are assessed, as per the modulespecification:LO 2: Understand the need to design systems that fully meet the requirements of the intendedusers including functional and non functional elements;LO 4: Be fully aware of the principles and practice of an O-O approach to the design and developmentof computer systems;LO 5: Be able to apply these principles in practice;LO 6: Produce O-O requirements and design documentation in UML which demonstrates thefeatures of good design such as loose coupling and high cohesion;2 BriefA Credit Union operates in a similar way to a commercial bank, though with a community-basedoutlook, holding members’ savings, and loaning money to other members. Membership is normallyrestricted to residents of a particular community, or members of a particular profession, and capitalis normally held for loans to members, as opposed to being invested for profit.Consider the following scenario:The Rutherford Village Credit Union was established in 1932, and to this day continues to use apaper-based system for book keeping tasks and account management. One day each week, from afunction room in the village community center, the clerk facilitates the operation of the credit union.It has comissioned you to create a prototype system that models a back-end server, which will facilitatethe actions of Persons upon the Accounts. It is hoped that this will pave the way for automation ofsome tasks in the future, thus helping the credit union to expand.The Credit Union has two types of Person: a Clerk and a Customer. The Credit Union has two typesof Account: a Saving account, and a Loan account, each of which can be opened (with a non-zerobalance) and closed.A saving account can be opened with a non-zero positive amount of money. A loan can be openedwith a non-zero negative amount of money, which represents the balance as the customer’s debt tothe credit union.The requirements for the Saving account are:• Accept a Payment, which increases the balance by the relevant amount• Allow a Withdrawal, which decreases the balance by the relevant amount1• Withdraw all funds upon closure• Only allow a balance which is 0 or greater.The requirements for a Loan account are:• Accept a Payment, which increases the balance by the relevant amount• Only allow a balance which is 0 or lower• Allow an interest rate to be applied to the balance, which decreases the balance by the relevantamount• Only allow closure when the balance is 0.A Clerk shall be able to do the following:• open a saving account on behalf of a customer, taking the cash opening funds from the customer• close a saving account, giving the customer their balance in cash.• open a loan on behalf of a customer, provided the amount is no more than £5000, no more than5% of total capital held by the credit union, and the credit union has enough capital to loan themoney. They give the customer the cash.• Apply a weekly interest rate COMP201代写、Java程序设计调试、代做softwarof 0.01% on all outstanding loan balances in the credit union.A Customer shall be able to do the following:• Withdraw money from their savings account• Pay money into their savings account• Pay money towards the outstanding balance on their loan account2.1 AssumptionsYou are make the following assumptions about the scenario:• The Credit Union is small. On days where the Credit Union clerk is in the office, they will runthe system on a single laptop computer.• This is a prototype system; the full implementation would have a user-friendly front-end, andwould also be linked to a database to hold all information with persistence.Task 1 (35%) Produce UML Use-Case Diagrams and Use-Case descriptions for the describedsystem. You shall consider only human actors for this task. You can split your answer intomultiple diagrams, if needed.For drawing the UML diagrams, you can use software or hand draw them neatly on plain paper, andscan them in. Please be aware that if they can not be read due to bad handwriting, bad quality scan,etc.... then the mark will be 0 for that diagram.Task 2 (5%) Identify 5 functional requirements of the described system.Task 3 (10%) Identify 5 non-functional requirements of the described system, using the descriptionof the scenario. You shall propose a mechanism and criteria that make these non-functionalrequirements verifiable, i.e. Describe a technique that can objectively test them.2Task 4 (40%) You have been given a partial implementation of the prototype system, in the Javalanguage. Complete this implementation, so that it compiles on a department computer andsatisfies the requirements. Look for ”//Todo:” in order to find areas of the source files that requirecompletion. You may use the CreditUnionUser.java file to test your program, ensuring it meets therequirements. Use of the instanceOf() operator is permitted. Your submitted code should be welllaid out and well commented, following good practise conventions.Task 5 (10%) Create a UML Sequence Diagram for the application and opening of a Loan. Useyour knowledge of the system obtained over this assignment to correctly identify the objects you mustconsider. For drawing the sequence diagrams, you can use software or hand draw them neatly onplain paper, and scan them in. Please be aware that if they can not be read due to bad handwriting,bad quality scan, etc.... then the mark will be 0 for that diagram.3 DeliverablesYou are required to deliver the following items:1. PDF Format Document containing the diagrams and written answers for Tasks 1,2,3, and 5. Itshould have your Name, University Username, and Student ID at the top.2. Java Source code files (*.java files) for the answer to Task 4. You should submit all source filesthat are required, even if you have not edited them from the original version. Source files shouldcontain your Name, University Username, and Student ID at the top, in the comment blockspace provided.4 SubmissionYou are to submit a zip file (studentID.zip, where studentID is your numerical 9-digit studentID number, found on your Student ID card) electronically via SAM, no later than the deadline statedin Section 1. This zip file should contain that which is detailed in Section 3.You can access the SAM submission system at the following URL: https://sam.csc.liv.ac.uk/3转自：http://www.3daixie.com/contents/11/3444.html