Fluent Essays

Hi,This assignment is about object oriented java. please only people who are professional programmers or teach programming bid on this question there is 1 file attached below, it tells the details about the assignment and the other are the tester files for the assignment which I will provide after I select the tutor. Please make sure that there are no changes to the testers as it is mentioned on the assignment.Thanks _syd_s3_a1_handout.pdf Unformatted Attachment Preview CSE1/CSE4IOO Semester 3, 2019 Assignment – Part 1 Assessment: This Part 1 of the assignment is worth 15 \% of the final mark for this subject. Due Date: To announced 13beJan, 2020 Delays caused by computer downtime cannot be accepted as a valid reason for a late submission without penalty. Students must plan their work to allow for both scheduled and unscheduled downtime. Penalties are applied to late assignments (accepted up to 5 days after the due date only). See the university policy for details. Individual Assignment: This is an individual assignment. You are not permitted to work as a group when writing this assignment. Copying, Plagiarism: Plagiarism is the submission of somebody else’s work in a manner that gives the impression that the work is your own. The Department of Computer Science and Information Technology treats academic misconduct seriously. When it is detected, penalties are strictly imposed. Refer to the unit guide for further information and strategies you can use to avoid a charge of academic misconduct. All submissions will be electronically checked for plagiarism. Objectives: The general aims of this assignment are: • To analyze a problem in an object-oriented manner, and then design and implement an object-oriented solution that conforms to given specifications • To practise using inheritance in Java • To practise file input and output in Java • To make implementations more robust through mechanisms such as exception handling. Submission Details: Please follow your lecturer’s instructions. Compiling and Execution Requirements: We should be able to compile your classes with the simple command javac *.java, and execute your programs with a simple command, e.g. java KangarooTester. 1 Two-Part Assignment • This assignment consists of two parts: Part 1 and Part 2. • When you complete both parts, you would implement a menu-driven program whose requirements are described below. • For part 1, you only need to complete a number of tasks specified later in this handout. Requirements Description Several organisations across Australia are dedicated to caring for injured wildlife. The general aims of such organisations are to return healthy animals to their natural environment. One such organisation is the Recovery and Release Shelter (R&R Shelter). They monitor animals that are close to being ready for release and determine when animals in their care will be released. The shelter has employed you to implement a small interactive application to manage their operations. The application stores all information about each animal in a text file that must be loaded when your program starts. The shelter looks after Kangaroos, Joeys and Possums. The shelter has paddocks for the Kangaroos and Joeys and the Possums are kept in cages. Information on Kangaroos is stored in 4 lines. A typical entry (record) is: Kangaroo M3425 M 1 • Line 1 is the type of animal (Kangaroo, Joey or Possum) - not mutable • Line 2 is a unique electronic tag for the animal - not mutable. All tags begin with M or F (indicating the sex of the animal) followed by one or more digits. • Line 3 indicates how much longer the animal will stay at the R&R Shelter before release. Possible values are: S – short-term M – medium-term L – long-term • Line 4 is the paddock number in which the animal has been placed (1 or 2) - not mutable 2 Information on Joeys (kangaroos not yet adult-sized) is stored in 5 lines. A typical record is: Joey F5432 L 2 4.55 • Line 1 is the type of animal - not mutable • Line 2 is the unique electronic tag for the animal - not mutable • Line 3 indicates how much longer the animal will stay in the R&R Shelter before release • Line 4 is the paddock number in which the animal has been placed (1 or 2) - not mutable • Line 5 is the weight of the joey in kg (kangaroos with weights less than or equal to 8kg are classified as joeys by the shelter). All joeys are without their mothers. Those that are large enough are to be cared for in a paddock. Joeys with weights less than 3kg are taken care of at a nearby shelter. Information on Possums is stored in 5 lines. A typical record is: Possum M3322 M apples|bananas|grapes U7 • Line 1 is the type of animal - not mutable • Line 2 is the unique electronic tag for the animal - not mutable • Line 3 indicates how much longer the animal will remain in the R&R Shelter before release • Line 4 is a list of foods that form the possum’s diet - not mutable. The foods are listed in a string, separated by the vertical bar character (|). • Line 5 indicates the home territory of the possum (the letter U or B for urban or bush, followed by a single digit from 0 to 9) - not mutable. All possums are returned to their home territory. *** The required application is called RRShelterMenu, which will be implemented in Part 2. It is a menu-driven program to maintain the collection of animals at the R&R Shelter. 3 Loading data The program must first read the text file RRShelter.txt, which contains the animal records, and load that information into the program. If the text file does not exist, a warning message should be displayed to screen and the program terminates. Otherwise, the program continues by displaying the menu options. Main menu The menu should have the following options: ****************** Recovery & Release ****************** A) Add Animal Submenu S) Show Animals F) Food Lists E) Empty Nest Q) Quit ****************** Please select: This menu should repeatedly be displayed after each (case-insensitive) user selection is executed, until the user chooses ’Q’ or ’q’ to quit the program. Saving data Before terminating, the collection should be written back to the text file that was used for input (using the same format). Option A - Add Animal Submenu This menu option takes the user to a submenu with the following options. ********************** Add Animal Submenu ********************** K) Add Kangaroo J) Add Joey P) Add Possum ********************** Please select: The user can choose one of the three options, each for adding a particular type of animal. For each option, the program prompts the user for relevant information. And once the option is finished, the program returns to the main menu. 4 Option S – Show Animals This option shows the details of all the animals currently in the shelter. It must show all the attribute names and values for each animal. Option F – Food Lists The Food Lists menu option displays to screen the food needs of all the animals. The information displayed depends on the type of the animal. • For each Kangaroo, one of the following three lines is output: Kangaroo: no extra needs Kangaroo: extra cut grass paddock 1 Kangaroo: extra cut grass paddock 2 If a Kangaroo has a long-term (L) stay value then extra cut grass is placed in that Kangaroo’s paddock (and the output line indicates the paddock number). Otherwise the first line is output. • For each Joey, one of the following two lines is output: M1234 Joey: no extra needs F5643 Joey: milk supplement If a Joey’s weight is 5kg or less, a milk supplement is given. Otherwise the first line is output. • For each Possum, the output starts with the Possum’s tag and then each food in the Possum’s food list is written 1 per line, indented 2 spaces. For example: M3322 apples bananas grapes Option E – Empty Nest • Animals are released (and deleted from the collection) one at a time. • When conditions are right, one animal of a particular type with a short-term (S) stay value (if it exists) is released back into its natural environment (and deleted from the collection). • For this option E, the program prompts the user for the type of animal to release. • Regardless of whether or not an animal was actually released or not, at the same time all animals of the same type with a medium-term (M) stay value (if exist) have their stay value changed to S, and all animals of the same type with a long-term (L) stay value (if exist) have their stay value changed to M. 5 Exception Handling 1. For various types of information, the program should check that the data value is valid, as shown in the table below: Characteristics type of Animal tag stay time paddock weight of Joey food list home territory Valid Values Kangaroo, Joey, Possum M or F followed by 1 or more digits (each digit is from 0-9 inclusive) S, M or L 1 or 2 double between 3 and 8 inclusive any string, possibly with substrings separated by ‘|’ character U or B followed by 1 digit (from 0-9 inclusive) 2. An exception should be thrown for any error encountered in the input text file. 3. When an exception is thrown for a menu option (from either the main menu or the submenu), the program must display the error message and then return to the main menu. 4. If the user chooses an invalid menu option (from the main menu or the submenu), the program displays an error message and returns to the main menu. *** For Part 1 of the assignment, complete the following tasks. Task 1 Design an inheritance hierarchy for the animals in the Rescue and Release Shelter. Draw a diagram to show the inheritance hierarchy. For simplicity, include the attributes only. Task 2 • Implement class Kangaroo (and of course, its super class). • Run the test program KangarooTester in Appendix A. Your Kangaroo class must be such that the test program can be run without changes. • Note: You do not need to implement methods relating to file input/output. These requirements will be done in Part 2 of the assignment. 6 Task 3 • Implement class Joey. • Run the test program JoeyTester in Appendix B. Your Joey class must be such that the test program can be run without changes. Task 4 • Implement class Possum. • Run the test program PossumTester in Appendix C. Your Possum class must be such that the test program can be run without changes. Task 5 • Implement class RRShelter, which maintains the collection of animals in the shelter. • The collection is maintained as an array. Assume that the maximum number of animals is 100. • This class must have at least methods to add and release animals. • Run test programs RRShelterTestAddAnimal and RRShelterTestReleaseAnimal in Appendices D and E, respectively. Your RRShelter must be such that these test programs can be run without changes. *** Marking Scheme Overview • 94 marks will be given to Tasks 1-5. • 6 marks will be given to program design, coding style and readability. Return of Assignments Department policy requires that assignments are returned within 3 weeks of the submission date. Students will be notified by email and via the CSE1/CSE4IOO LMS forum when marking sheets are available for collection. 7 Appendix A public class KangarooTester { public static void main(String [] args) throws Exception { // valid case test1(); // invalid cases try{ test2();} catch(Exception e){ System.out.println(e.getMessage());} try{ test3();} catch(Exception e){ System.out.println(e.getMessage());} try{ test4();} catch(Exception e){ System.out.println(e.getMessage());} try{ test5();} catch(Exception e){ System.out.println(e.getMessage());} try{ test6();} catch(Exception e){ System.out.println(e.getMessage());} } public static void test1() throws Exception { String tag = M1234; char stayTime = ’S’; int paddock = 1; Kangaroo kan = new Kangaroo(tag, stayTime, paddock); System.out.println(kan); } public static void test2() throws Exception // Invalid tag length { String tag = M; char stayTime = ’S’; int paddock = 1; Kangaroo kan = new Kangaroo(tag, stayTime, paddock); System.out.println(kan); } 8 public static void test3() throws Exception // Invalid first character { String tag = A1234; char stayTime = ’S’; int paddock = 1; Kangaroo kan = new Kangaroo(tag, stayTime, paddock); System.out.println(kan); } public static void test4() throws Exception // Invalid characters after the first character { String tag = M12X4; char stayTime = ’S’; int paddock = 1; Kangaroo kan = new Kangaroo(tag, stayTime, paddock); System.out.println(kan); } public static void test5() throws Exception // Invalid code for stay time { String tag = M1234; char stayTime = ’A’; int paddock = 1; Kangaroo kan = new Kangaroo(tag, stayTime, paddock); System.out.println(kan); } public static void test6() throws Exception // Invalid paddock number { String tag = M1234; char stayTime = ’S’; int paddock = 3; Kangaroo kan = new Kangaroo(tag, stayTime, paddock); System.out.println(kan); } } /* Sample output: Kangaroo[tag: M1234, stayTime: S, paddock: 1] Error: Tag number must have at least two characters! Error: Tag number must start with ’F’ or ’M’! Error: Tag must contain digits only after the first character! Error: Code for stay time must be ’S’, ’M’ or ’L’! */ 9 Appendix B public class JoeyTester { public static void main(String [] args) throws Exception { // valid case test1(); // invalid cases try{ test2();} catch(Exception e){ System.out.println(e.getMessage());} } public static void test1() throws Exception { String tag = M1234; char stayTime = ’S’; int paddock = 1; double weight = 5.250; Joey joey = new Joey(tag, stayTime, paddock, weight); System.out.println(joey); } public static void test2() throws Exception // Invalid weight { String tag = M1234; char stayTime = ’S’; int paddock = 1; double weight = 1.500; Joey joey = new Joey(tag, stayTime, paddock, weight); System.out.println(joey); } } /* Sample output: Joey[tag: M1234, stayTime: S, paddock: 1, weight: 5.25] Error: Joey’s weight must be between 3 and 8 kilograms! */ 10 Appendix C public class PossumTester { public static void main(String [] args) throws Exception { // valid case test1(); // invalid cases try{ test2();} catch(Exception e){ System.out.println(e.getMessage());} try{ test3();} catch(Exception e){ System.out.println(e.getMessage());} try{ test4();} catch(Exception e){ System.out.println(e.getMessage());} } public static void test1() throws Exception { String tag = M1234; char stayTime = ’S’; String diet = apples|banana; String territory = U1; Possum possum = new Possum(tag, stayTime, diet, territory); System.out.println(possum); } public static void test2() throws Exception // invalid length for territoty code { String tag = M1234; char stayTime = ’S’; String diet = apples|banana; String territory = U12; Possum possum = new Possum(tag, stayTime, diet, territory); System.out.println(possum); } public static void test3() throws Exception // invalid first character for territoty code { String tag = M1234; char stayTime = ’S’; String diet = apples|banana; String territory = A1; Possum possum = new Possum(tag, stayTime, diet, territory); 11 System.out.println(possum); } public static void test4() throws Exception // invalid second character for territoty code { String tag = M1234; char stayTime = ’S’; String diet = apples|banana; String territory = UB; Possum possum = new Possum(tag, stayTime, diet, territory); System.out.println(possum); } } /* Sample output: Possum[tag: M1234, stayTime: S, diet: apples|banana, territory: U1] Error: Territory code must have exactly two characters! Error: Territory code must start with ’U’ or ’B’! Error: Second character of territory code must be a digit! */ 12 Appendix D public class RRShelterTestAddAnimal { public static void main(String [] args) throws Exception { // add animal valid case test1(); // add animal invalid cases // some quick tests System.out.println(\nTest 2); test2(); System.out.println(\nTest 3); test3(); System.out.println(\nTest 4); try{ test4();} catch(Exception e){ System.out.println(e.getMessage());} System.out.println(\nTest 5); try{ test5();} catch(Exception e){ System.out.println(e.getMessage());} } public static void test1() throws Exception { RRShelter shelter = new RRShelter(); shelter.addKangaroo(M001, ’S’, 1); shelter.addJoey(M002, ’S’, 1, 4.5); shelter.addPossum(M003, ’S’, apple|banana, U1); System.out.println(shelter); } public static void test2() throws Exception // Add kangaroo - tag number is not new { RRShelter shelter = new RRShelter(); shelter.addKangaroo(M001, ’S’, 1); System.out.println(shelter); try { shelter.addKangaroo(M001, ’M’, 2); } catch(Exception e) { System.out.println(e); 13 } finally { System.out.println(shelter); } } public static void test3() throws Exception // Add kangaroo - invalid tag { RRShelter shelter = new RRShelter(); System.out.println(shelter); try { shelter.addKangaroo(A001, ’S’, 1); } catch(Exception e) { System.out.println(e); } finally { System.out.println(shelter); } } public static void test4() throws Exception // Add joey - invalid weight { RRShelter shelter = new RRShelter(); System.out.println(shelter); try { shelter.addJoey(M001, ’S’, 1, 2.5); } catch(Exception e) { System.out.println(e); } finally { System.out.println(shelter); } } public static void test5() throws Exception // Add possum - invalid territory { RRShelter shelter = new RRShelter(); System.out.println(shelter); 14 try { shelter.addPossum(M001, ’S’, apple|banana, X1); } catch(Exception e) { System.out.println(e); } finally { System.out.println(shelter); } } } /* Sample output: RR Sheter: Kangaroo[tag: M001, stayTime: S, paddock: 1] Joey[tag: M002, stayTime: S, paddock: 1, weight: 4.5] Possum[tag: M003, stayTime: S, diet: apple|banana, territory: U1] Test 2 RR Sheter: Kangaroo[tag: M001, stayTime: S, paddock: 1] java.lang.Exception: Error: Tag number already exists! RR Sheter: Kangaroo[tag: M001, stayTime: S, paddock: 1] Test 3 RR Sheter: java.lang.Exception: Error: Tag number must start with ’F’ or ’M’! RR Sheter: Test 4 RR Sheter: java.lang.Exception: Error: Joey’s weight must be between 3 and 8 kilograms! RR Sheter: 15 Test 5 RR Sheter: java.lang.Exception: Error: Territory code must start with ’U’ or ’B’! RR Sheter: */ 16 Appendix E public class RRShelterTestReleaseAnimal { public static void main(String [] args) throws Exception { test1(); // there are no invalid cases // note that release method is rather artificial. What if we // want to release several joeys at the same time? } public static void test1() throws Exception { RRShelter shelter = new RRShelter(); shelter.addKangaroo(M001, ’S’, 1); shelter.addKangaroo(M002, ’M’, 1); shelter.addKangaroo(M003, ’L’, 1); shelter.addJoey(M004, ’S’, 1, 4.5); shelter.addJoey(M005, ’M’, 1, 4.5); shelter.addJoey(M006, ’L’, 1, 4.5); shelter.addPossum(M007, ’S’, apple|banana, U1); shelter.addPossum(M008, ’M’, apple|banana, U1); shelter.addPossum(M009, ’L’, apple|banana, U1); System.out.println(shelter); // release a kangagoo shelter.releaseKangaroo(); System.out.println(shelter); // release a joey shelter.releaseJoey(); System.out.println(shelter); // release a possum shelter.releasePossum(); System.out.println(shelter); // release second possum shelter.releasePossum(); System.out.println(shelter); // release third possum shelter.releasePossum(); System.out.println(shelter); // try to release another possum shelter.releasePossum(); System.out.println(shelter); 17 } } /* Sample output: RR Sheter: Kangaroo[tag: M001, stayTime: S, paddock: 1] Kangaroo[tag: M002, stayTime: M, paddock: 1] Kangaroo[tag: M003, stayTime: L, paddock: 1] Joey[tag: M004, stayTime: S, paddock: 1, weight: 4.5] Joey[tag: M005, stayTime: M, paddock: 1, weight: 4.5] Joey[tag: M006, stayTime: L, paddock: 1, weight: 4.5] Possum[tag: M007, stayTime: S, diet: apple|banana, territory: U1] Possum[tag: M008, stayTime: M, diet: apple|banana, territory: U1] Possum[tag: M009, stayTime: L, diet: apple|banana, territory: U1] Animal to release: tag: M001, stayTime: S, paddock: 1 RR Sheter: Kangaroo[tag: M002, stayTime: S, paddock: 1] Kangaroo[tag: M003, sta ... 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