Can I please get get help with the Student class?

Pseudocode given:

package proj3;

import java.util.ArrayList;

/** * The Student class stores the gradebook information for one Student. * * Note that Student implements the java.lang.Comparable interface because we are going * to be sorting the roster of students by last name so we need to be able to compare the last * names of two students A and B to determine if A B. See the * compareTo() method. */ public class Student implements Comparable {

/** * mCurrStudent is a reference to the Student object which is currently being displayed and * edited in the View. It should only be accessed via accessor/mutator methods. */ ???

/** * mTestList is an ArrayList of Integers storing the student's test scores. */ ???

/** * The student's first name. */ ???

/** * mHomework List is an ArrayList of Integers storing the student's homework scores. */ ???

/** * The student's last name. */ ???

/** * Student() * * PSEUDOCODE: * method Student(pFirstName : String, pLastName : String) * save parameters pFirstName and pLastName to instance variables by calling mutators * -- Note that we only create the test list here, it will be populated later * create an ArrayList and pass it off to setTestList() * -- Note that we only create the homework list here, it will be populated later * create an ArrayList and pass it off to setHomeworkList() * end Student() */ ???

/** * addTest() * * Adds an test score pScore to the test list * * @param pScore * * PSEUDOCODE: * method addTest(pScore : int) : void * call add(pScore) on getTestList() to add a new test score to the list of test scores. * end addTest */ ???

/** * addHomework() * * Adds a homework score pScore to the homework list * * @param pScore * * PSEUDOCODE: * method addHomework(pScore : int) : void * call add(pScore) on getHomeworkList() to add a new homework score to the list of * homework scores * end addHomework */ ???

/** * compareTo() * * @param pStudent is a Student * * This method compares the last name of 'this' Student to the last name of pStudent to * determine if the last name of 'this' Student is the last name of pStudent. * It is called during the quick sort routine in Sorter.partition(). * * Provide the annotation that prevents accidental overloading since we are overriding the * String.compareTo() method. * * PSEUDOCODE: * method compareTo(pStudent : Student) : int * return: negative int if the last name of this Student is the last name of pStudent * hint: the last names are Strings and String already implements compareTo(). * end compareTo */ ???

/** * Accessor method for mCurrStudent. */ public static Student getCurrStudent() { return mCurrStudent; }

/** * getTest() * * Accessor method to retrieve an test score from the list of tests. * * @param pNum The test number for which we wish to retrieve the score. * * @return The test score. */ public int getTest(int pNum) { return getTestList().get(pNum); }

/** * getTestList() * * Accessor method for mTestList. */ private ArrayList getTestList() { return mTestList; }

/** * getFirstName() * * Accessor method for mFirstName. */ public String getFirstName() { return mFirstName; }

/** * getFullName() * * Returns the student's full name in the format: "lastname, firstname". */ ???

/** * getHomework() * * Accessor method to retrieve a homework score from the list of homeworks. * * @param pNum The homework number for which we wish to retrieve the score. * * @return The homework score. */ public int getHomework(int pNum) { return getHomeworkList().get(pNum); }

/** * getHomeworkList() * * Accessor method for mHomeworkList. */ private ArrayList getHomeworkList() { return mHomeworkList; }

/** * getLastname() * * Accessor method for mLastName. */ public String getLastName() { return mLastName; }

/** * Mutator method for mCurrStudent. */ public static void setCurrStudent(Student pCurrStudent) { mCurrStudent = pCurrStudent; }

/** * setTest() * * Mutator method to store an test score into the list of test scores. * * @pNum is the index into the list of tests, where 0 is the index of the first test score. */ public void setTest(int pNum, int pScore) { getTestList().set(pNum, pScore); }

/** * setTestList() * * Mutator method for mTestList. */ private void setTestList(ArrayList pTestList) { mTestList = pTestList; }

/** * setFirstName() * * Mutator method for mFirstName. */ public void setFirstName(String pFirstName) { mFirstName = pFirstName; }

/** * setHomework() * * Mutator method to store a homework score into the list of homework scores. * * * @pNum is the index into the list of homeworks, where 0 is the index of the first hw score. */ public void setHomework(int pNum, int pScore) { getHomeworkList().set(pNum, pScore); }

/** * setHomeworkList() * * Mutator method for mHomeworkList. */ private void setHomeworkList(ArrayList pHomeworkList) { mHomeworkList = pHomeworkList; }

/** * setLastname() * * Mutator method for mLastName. */ public void setLastName(String pLastName) { mLastName = pLastName; }

/** * toString() * * Returns a String representation of this Student. The format of the returned string shall be * such that the Student information can be printed to the output file in this format: * * lastname firstname test1 test2 test2 hw1 hw2 hw3 hw4 hw5 * * where the fields are separated by spaces, except there is not space following hw5. * * Hint: The String class has a method named trim() that removes leading and trailing white- * space from a string. * * Hint: use enhanced for loops */ ??? }

3 Background This project shall implement a program which stores grade information for students in a class and allows that grade in- formation to be edited. The data shall be stored in a database le named gradebook.dat. There shall be one student record per line, where the format of a student record is: last-name first-name ex1 ez2 ex3 hw1 hw2 hw3 hwk hws where: last-name The student's last name. A contiguous string of one or more characters, with no spaces. first-rame The student's Erst name. A contiguous string of one or more characters, with no spaces. exi, ex2, ez3 The student's scores on three exams, may be zeros. Each exam is worth 100 pts. hwi-hw5 The student's scores on ve homework assignments, may be zeros. Each assignment is worth 25 pts. Here is an example gradebook dat Ele which you may use for testing if you wish: Sample gradebook. dat Simpson Lisa 100 100 100 25 25 25 25 25 Flintstone Fred 80 60 40 15 17 22 18 23 Jetson George 70 83 81 20 21 22 23 25 Explosion Nathan 7 6 5 4 3 2 1 0 Muntz Nelson 60 70 50 20 15 10 5 8 Terwilliger Robert 80 90 95 23 21 19 17 23 Flanders Ned 85 95 75 12 14 17 23 16 Bouvier Selma 16 16 16 16 16 16 16 16 Spuckler Cletus 1 2 3 4 5 6 7 8 Wiggum Clancy 18 16 14 12 10 8 4 2 Skinner Seymour 78 83 99 19 23 21 24 18 3 Software Requirements The GUI shall be implemented in a class named View. When the program start the View frame shall appear as shown in Fig. 1. 2. The View frame shall be 525 pixels wide and 225 pixels high The program shall display the program name in the title bar. You may change the name of the program to anything 1. 3. you wish. 4. The X close button in the title bar shall be disabled, i.e., when it is clicked the program shall not exit and the View shall remain unchanged. Gred :: Gradebook Editor Student Name: Search Homework Exam: Clear Save Exit 6. Figure 1: The View Frame 5. The student records shall be stored in a gradebook database in a le named gradebook.dat. When the program starts, if the gradebook. dat le cannot be opened for reading, the program shall display an error message dialog (using the JOption Pane.show MessageDialog() method) informing the user that the gradebook database could not be opened for reading and that the program will terminate. When the user clicks the OK button the pro- gram shall terminate. See SR 27. 7. When the program exita, if the gradebook dat le cannot be opened for writing, the program shall display an error message dialog (using the JOption Pane.show MessageDialog() method) informing the user that the gradebook database could not be opened for writing and that clicking the dialog's OK button will cause the program to terminate without updating the gradebook database. When the user click the OK button the program shall terminate. See SR 27. 8. When the program starts, no student record shall be displayed and the text felds shall be empty. See SR 1. 9. The last names of the students in the gradebook database shall be unique (because the last name is the key when searching the database). 10. When the program starts, it shall read the contents of the gradebook database from gradebook. dat and shall sort the list of students into ascending order by last name (per the Software Design requirements, it shall sort using the quick- sort sorting algorithm). The sort is performed so that the program may search the database in memory for a species student record using the binary search algorithm. 11. If the student record for a student who's last name is "Simpson" is being displayed, this is how the View shall appear, displaying the student's full name, homework scores, and exam scores. See SR's 12-14. Gred :: Gradebook Editor Student Name: simpson, usa Search Homework: 25 25 25 25 25 Exam: 10D 100 100 Clear Save Exit Figure 2: The View Displaying a Student's Grades 12. When a student record is being edited, the full name of the student shall be displayed in the Student Name text seld. 13. When a student record is being edited, the student's homework 1-5 scores shall be displayed from left to right in the Homework text selds 14. When a student record is being edited, the student's exam 1-3 scores shall be displayed from left to right in the Exam text Gelds. 15. When the Search button is clicked, if there are values being displayed in the homework and exam Eelda, then those Selds shall be cleared, i.e., set to empty, before the search begins. 16. When the user clicks the Search button and the Student Name text seld is empty, an error message dialog shall be dis- played, requesting that the user enter a student's last name. The Student Name and numeric text selds shall all re- main empty 17. When the user enters a name in the Student Name text Seld and then clicks the Search button, the gradebook data- base in memory shall be searched for a student who's last name matches the name in the text feld. Per the Software Design requirements, the search function shall be implemented either using either iterative binary search or recursive binary search. 18. If the search discussed in SR 17 fails because there are no students whose last name matches the name in the Student Name text feld, then an error message dialog shall be displayed informing the user that a student with that last name could not be found in the gradebook. After the user clicks OK to close the dialog, the Student Name text seld shall be cleared and the numeric text selda shall remain empty 19. If the search discussed in SR 17 succeeds, then the Homework and Eram text selds shall be updated with the stu- dent's homework and exam scores. The Student Name text seld shall continue to display the student's full name per SR 12. 20. When the user is editing the homework and/or exam scores for a student and then clicks the Save button, the student record in memory shall be updated with the new scores. 21. See SR 20. These changes shall remain stored in memory and shall not be written to the gradebook database until the program exite. 22. When no student record is being edited (the homework and exam text selds are empty) and the user click the Save button, nothing shall happen. 23. When the user is editing the information for a student and click the Clear button, without erat clicking the Save but- ton, then the student record in memory shall not be updated even if the homework and/or exam text selda had been modified 24. When no student information is being displayed or edited, and the user clicks the Clear button, then nothing shall happen. 25. When the user is editing and has modised the information for a student and then click the Erit button, the student record and all of the other student records) shall be written to the gradebook database before the program termi- nates. See SR 7 for how write failures are handled. 26. Whether the user is editing student information or not, when the Erit button is clicked, all of the student records shall be written to the gradebook database and then the program shall terminate. 27. Any error message dialogs shall be displayed centered within the View frame and display a message and one button la- beled OK. 4 Software Design Requirements 1. All classes shall be declared in a package named projs. The UML class diagram in UMLet format can be found in the project archive's uml folder. The img folder contains the class diagram in PNG format. Your program shall implement all of the classes (including methods, declaring in- stance and class variables, and so on) of this design. 2. 3. Class Main. A template source code sle for Main is included in the project archive. The Main class shall contain the main() method which shall instantiate an object of the Main class and then call run() on that object. You shall com- plete the code by reading the comments and implementing the paeudocode, while using the UML class diagram for Main as a guide. Main.run() shall catch the FileNotFoundException which may get thrown by Gradebook Reader read Gradebook() and shall terminate the program by displaying an error message diagram which informs the user that the gradebook data- base could not be opened for reading; it shall then terminate the program. See SR 6. Main erit() shall catch the FileNotFoundErception which may be thrown by Gradebook Writer.writeGradebook() when the gradebook database cannot be opened for writing; the handler shall display an error message dialog informing the user that the gradebook database sle could not be opened for writing and that the gradebook will not be updated; it shall then terminate the program. See SR 7. The parameter to Main.search() is the last name of a student and search() shall call Roster.getStudent() to search the Roster for a student with that last name. If the student is found, it will return a Student object which search() shall return. There are eve homework assignments, 30 Main.getNum Homeworks() is a class method which shall return the class con- stant NUM_HOMEWORKS which is declared in Main and is equivalent to 5. Similarly, Mair.getNum Erams() shall return the class constant NUM_EXAMS which is declared in Main and is equivalent to 3. The remainder of the meth- ods in Main are accessor / mutator methods for various data members. 4. Class Gradebook Reader. The constructor of this class creates a Scanner object which is used to read the gradebook database (the Scanner object is stored in instance variable min so that it may be used in the various read methods). Since the ele open may fail, this constructor shall throw the FileNotFoundException to Main.run() which shall catch the exception. This class read the gradebook information from the gradebook database fle gradebook. dat when readGradebook() is called. It then calls read Roster() to read each student record from the input sle and then returns the created Roster object. The read Roster() method &rat instantiates a Roster object, then uses a while loop to read student records from the in- put sle. For each student record, it reads the student's last and Erst names from the input le, creates a Student ob- ject, passing the last name and erst name to the Student constructor, and then calls readHomework() and read Eram() to read the student's homework and exam scores. Then it calls Roster.addStudent() to add the Student object to the Roster. Finally, it returns the Roster object that was created, back to read Gradebook(), which then returns the Roster back to Main.run() which called readGradebook() in the Erst place. Note that after reading the Roster but before returning the Roster to Main.run(), readGradebook() calls Roster.sort- Roster() to sort the Roster. 5. Class Gradebook Writer. This class writes the gradebook information to gradebook. dat before the program exits. It is a subclass of java.io.Print Writer 30 the Gradebook Writer constructor must call the Print Writer constructor to open the Ele for writing. Since the open may fail, Print Writer will return the FileNotFoundException to Gradebook Writer() which will throw it back to Main.erit() which will catch and handle it. The gradebook database is written when write Gradebook() is called. This is a very simple method which just iterates over the Roster, writing each Student object to the sle. 6. Class Roster. The class roster is implemented as an ArrayList of Student objecta. addStudent() is called from Grade- book Reader.readRoster() to add a Student to the Roster's ArrayList. getStudent() is called from Main.search(), which is called by View.action Performed() when the user clicks the Search button in the View.getStudent() calls Searcher search(), passing the Student's last name as the key, search() searches the ArrayList for the student with a matching last name using the binary search algorithm. You shall implement either the iterative or recursive version of the algorithm. If a Student with matching last name is found, then getStudent() re- turns the Student object; otherwise, it returns -1 which represents the "not found" condition. sortRoster() is called from GradebookReader, see that class for a discussion. sortRoster() calls the class method Sorter. sort) passing the ArrayList of Students as the parameter. Upon return, the ArrayList will have been sorted. Note that Roster overrides the inherited toString() method and it returns a String representation of the Roster. The string representation is just the string representation of each Student in the ArrayList, which is formed by calling Stu- dent.toString() on each Student object. Roster.toString() is primarily implemented for use as a useful method to call to print out the Roster during debugging. Roster.getStudentList() and Roster.setStudentList() are accessor/mutator meth- ods for the mStudent List instance variable. 7. Clase Searcher. This class shall implement one public class method int search(ArrayList pList, String pKey) which searches the Roster for a student with the specifed last name stored in pkey. Since the roster is sorted into as- cending order by last name, you shall implement either the iterative or recursive binary search algorithm. The method return the index of the student in the list or -1 if the student is not found. Template not provided; use the UML clase diagram as a guide and the binary search lecture notes. 8. Class Sorter. A class which implements the quicksort algorithm. All of the method are static and sort(ArrayList pList) is the only public method and calla private quickSort(pList, O, pList.size() - 1) to sort the list. Template not provided; use the UML class diagram and the quicksort lecture notes. 9. Class Student. The Student class stores the information for one student. Read the comments and implement the pe- udocode. See the comments for Student.toString() and make sure to implement this method correctly. It is called while writing the gradebook database to write out each Student record. During grading, we will be using the Linux dif com- mand to compare your output fles to our output slea to check for diferences. If there are mismatches, that are more than minor formatting issues, then if the method does not correctly output the Student information, then di will fail and the test case will fail which will cause you to lose points. 10. Class View. The View implements the GUI. Read the comments and implement the pseudocode. object. auses ava.awt.event ActionListner action Performed pEvent: ActionEvent): void interface Comparables Student compare TopStudent: Student): int A ximplements simplements pro 3. Main -NUM EXAMS: int = 3 sonst -NUM HOMEWORKS:int: 5 const mRoster: Roster mView.View +main(pArgs: String[]); void +exit(): void +getNumExams). int +getNum Homeworks, int -getRoster: Roster getView(): View -run(): vaid + searchipLastName: String): Student -setRoster poster: Roster): void -setView(pView: View void suses pro 3. Student -mCurr Student: Student -mExamList: ArrayList Integer -mFirstName: String -mHomeworkList: ArrayList mLastName: String +StudentipFirstName: String, pLastName: String): octor +addExampScore: int): void +addHomework(Score: int): void + compare TopStudent Studenti: int "override +getCurrStudent'): Student: +getExampNum: Int: int -getExamListl: ArrayList): vold + setFirst Name{pFirst Name: String): void + setHomework(pNum: int, pScore: int: void setHomeworklistipHomeworkList: ArrayList); void + setLastNamelpLastName: String): void +toString(): String override proj3: View +FRAME WIDTH:int-525 +FRAME HEIGHT: int.: 225 -m Main: Main -mClearButton: JButton -mExam Text: TextField -mExitButton: JButton -mHomeworkText: JTextField] -mSaveButton: JButton -DeathButton: 16ttan -mStudent Name: TextField + ViewipMain: Main): actor +action Performed (pEvent: ActionEvent]: void override -cleart: void clearNumbers(): vold display Student Student: Student); void getMain(): Main + message BoxpMessage: String): void -save Student Student: Student): void -setMainipMain: Main): void 1.. cuses cuses scalls pro 3::Roster -mStudentList: ArrayLists Student> +Roster): ctor +addStudenti Student: Student): vold +getStudent(plastName: String): Student +get StudentList> ArrayListStudent -setStudentustipStudentList: ArrayList)void swap pList. ArrayLists Student, pld. int. ld 2: int). void acalls java.io. Print Writer A pro 3: GradebookWinter pro 3Searcher +Gradebook WriteripFname: String ctor sthrows FileNotFoundExceptiona + writeGradebook poster: Roster): void +searchipList: ArrayList pList, String pKey) which searches the Roster for a student with the specifed last name stored in pkey. Since the roster is sorted into as- cending order by last name, you shall implement either the iterative or recursive binary search algorithm. The method return the index of the student in the list or -1 if the student is not found. Template not provided; use the UML clase diagram as a guide and the binary search lecture notes. 8. Class Sorter. A class which implements the quicksort algorithm. All of the method are static and sort(ArrayList pList) is the only public method and calla private quickSort(pList, O, pList.size() - 1) to sort the list. Template not provided; use the UML class diagram and the quicksort lecture notes. 9. Class Student. The Student class stores the information for one student. Read the comments and implement the pe- udocode. See the comments for Student.toString() and make sure to implement this method correctly. It is called while writing the gradebook database to write out each Student record. During grading, we will be using the Linux dif com- mand to compare your output fles to our output slea to check for diferences. If there are mismatches, that are more than minor formatting issues, then if the method does not correctly output the Student information, then di will fail and the test case will fail which will cause you to lose points. 10. Class View. The View implements the GUI. Read the comments and implement the pseudocode. object. auses ava.awt.event ActionListner action Performed pEvent: ActionEvent): void interface Comparables Student compare TopStudent: Student): int A ximplements simplements pro 3. Main -NUM EXAMS: int = 3 sonst -NUM HOMEWORKS:int: 5 const mRoster: Roster mView.View +main(pArgs: String[]); void +exit(): void +getNumExams). int +getNum Homeworks, int -getRoster: Roster getView(): View -run(): vaid + searchipLastName: String): Student -setRoster poster: Roster): void -setView(pView: View void suses pro 3. Student -mCurr Student: Student -mExamList: ArrayList Integer -mFirstName: String -mHomeworkList: ArrayList mLastName: String +StudentipFirstName: String, pLastName: String): octor +addExampScore: int): void +addHomework(Score: int): void + compare TopStudent Studenti: int "override +getCurrStudent'): Student: +getExampNum: Int: int -getExamListl: ArrayList): vold + setFirst Name{pFirst Name: String): void + setHomework(pNum: int, pScore: int: void setHomeworklistipHomeworkList: ArrayList); void + setLastNamelpLastName: String): void +toString(): String override proj3: View +FRAME WIDTH:int-525 +FRAME HEIGHT: int.: 225 -m Main: Main -mClearButton: JButton -mExam Text: TextField -mExitButton: JButton -mHomeworkText: JTextField] -mSaveButton: JButton -DeathButton: 16ttan -mStudent Name: TextField + ViewipMain: Main): actor +action Performed (pEvent: ActionEvent]: void override -cleart: void clearNumbers(): vold display Student Student: Student); void getMain(): Main + message BoxpMessage: String): void -save Student Student: Student): void -setMainipMain: Main): void 1.. cuses cuses scalls pro 3::Roster -mStudentList: ArrayLists Student> +Roster): ctor +addStudenti Student: Student): vold +getStudent(plastName: String): Student +get StudentList> ArrayListStudent -setStudentustipStudentList: ArrayList)void swap pList. ArrayLists Student, pld. int. ld 2: int). void acalls java.io. Print Writer A pro 3: GradebookWinter pro 3Searcher +Gradebook WriteripFname: String ctor sthrows FileNotFoundExceptiona + writeGradebook poster: Roster): void +searchipList: ArrayList