rendered paste body// *******************************************************// * Student.java *// * *// * Student operations. *// * Author: Jurand Nogiec *// * Date: April 11, 2007 *// *******************************************************public class Student{ //4 private instance variables private String firstName; private String lastName; private String uid; private SemesterTranscript[] transcriptArray; //2 private instance methods private Student() { //no code necessary here } // private SearchResultPair findSemester(SemesterPair semester) // {// Error.Assert(// (semester != null),// "Student::findSemester(SemesterPair): " +// "parameter SemesterPair reference must not be null!"); // boolean semesterNotFound = true;// int semesterIndex = 0; // //search the transcriptArray // while(semesterNotFound && (semesterIndex < transcriptArray.length))// { // if(transcriptArray[semesterIndex].getSemesterPair().compareTo(semester) == 0)// semesterNotFound = false; // else// semesterIndex++;// } // // from the SemesterTranscript.java file provided in part1// SearchResultPair resultPair = new SearchResultPair();// resultPair.index = semesterIndex;// resultPair.isFound = !(semesterNotFound); // if exits not finding it, semesterNotFound is true// return resultPair; // if exits finding it, semesterNotFound is false // } private SearchResultPair findSemester(SemesterPair semesterPair) { Error.Assert( (semesterPair != null), "Student::findSemester(SemesterPair): " + "parameter SemesterPair reference must not be null!"); SearchResultPair result = new SearchResultPair(); // SemesterPair found if(transcriptArray.length == 0) { result.index = 0; result.isFound = false; return result; } for(int i=0; i < transcriptArray.length; i++) { if(transcriptArray[i].getSemesterPair().equals(semesterPair)) { result.index = i; result.isFound = true; return result; } else if( semesterPair.compareTo(transcriptArray[i].getSemesterPair().getSeason(),transcriptArray[i].getSemesterPair().getYear()) == 1 ) { result.index = i; result.isFound = false; return result; } } // SemesterPair not found return result; } //15 public instance methods //constructor public Student(String theFirstName, String theLastName, String theUid) { Error.Assert( (theFirstName != null), "Student::Student(String, String, String): " + "parameter firstName reference must not be null!"); Error.Assert( (theLastName != null), "Student::Student(String, String, String): " + "parameter lastName reference must not be null!"); Error.Assert( (!theFirstName.equals("")), "Student::Student(String, String, String): " + "parameter String cannot be empty String!"); Error.Assert( (!theLastName.equals("")), "Student::Student(String, String, String): " + "parameter String cannot be empty String!"); Error.Assert( (verifyUID(theUid)), "Student::Student(String, String, String): " + "parameter String UID must be valid String!"); firstName = theFirstName; lastName = theLastName; uid = theUid; transcriptArray = new SemesterTranscript[0]; // size 0 } //constructor public Student(Student origStudent) { Error.Assert( (origStudent != null), "Student::Student(String): " + "parameter origStudent reference must not be null!"); //independent copy, initialize object to be copy of parameter object firstName = origStudent.firstName; lastName = origStudent.lastName; uid = origStudent.uid; transcriptArray = new SemesterTranscript[origStudent.transcriptArray.length]; for(int i=0; i < transcriptArray.length; i++) transcriptArray[i] = origStudent.transcriptArray[i].copy(); } public Student copy() { Student studentCopy = new Student(this); return studentCopy; } public String getFirstName() { return firstName; } public String getLastName() { return lastName; } public String getUID() { return uid; } public boolean addCourse(SemesterPair semesterPair, String courseName, int credit) { Error.Assert( (semesterPair != null), "Student::addCourse(SemesterPair, String, int): " + "parameter SemesterPair semester reference must not be null!"); Error.Assert( (courseName != null), "Student::addCourse(SemesterPair, String, int): " + "parameter String courseName reference must not be null!"); Error.Assert( !(courseName.equals("")), "Student::addCourse(SemesterPair, String, int): " + "parameter String courseName reference must not be empty!"); Error.Assert( (credit > 0), "Student::addCourse(SemesterPair, String, int): " + "parameter int credit reference must be positive!"); int loc = findSemester(semesterPair).index; if(findSemester(semesterPair).isFound) return transcriptArray[loc].addCourse(courseName, credit); SemesterTranscript[] temp = new SemesterTranscript[transcriptArray.length]; if (transcriptArray.length == 0) { transcriptArray = new SemesterTranscript[1]; transcriptArray[loc] = new SemesterTranscript(semesterPair); return transcriptArray[loc].addCourse(courseName, credit); } for(int i=0; i < transcriptArray.length; i++) temp[i] = transcriptArray[i]; transcriptArray = new SemesterTranscript[temp.length + 1]; for(int i=0; i < loc; i++) transcriptArray[i] = temp[i]; for(int i=loc+1; i < transcriptArray.length; i++) transcriptArray[i] = temp[i]; transcriptArray[loc] = new SemesterTranscript(semesterPair); return transcriptArray[loc].addCourse(courseName, credit); } public boolean removeCourse(SemesterPair semesterPair, String courseName) { int loc = findSemester(semesterPair).index; if(!findSemester(semesterPair).isFound) return false; // else semester is found if(transcriptArray[loc].getNumCourses() <= 0) { SemesterTranscript[] temp = new SemesterTranscript[transcriptArray.length]; for(int i=0; i < transcriptArray.length; i++) temp[i] = transcriptArray[i]; transcriptArray = new SemesterTranscript[temp.length - 1]; for(int i=0; i < loc; i++) transcriptArray[i] = temp[i]; for(int i=loc+1; i < temp.length; i++) transcriptArray[i-1] = temp[i]; return true; } return transcriptArray[loc].removeCourse(courseName); } public boolean setCourseGrade(SemesterPair semesterPair, String courseName, String newGrade) { Error.Assert( (semesterPair != null), "Student::setCourseGrade(SemesterPair, String, String): " + "parameter SemesterPair semester reference must not be null!"); Error.Assert( (courseName != null), "Student::setCourseGrade(SemesterPair, String, String): " + "parameter String courseName reference must not be null!"); Error.Assert( (newGrade != null), "Student::setCourseGrade(SemesterPair, String, String): " + "parameter String newGrade reference must not be null!"); Error.Assert( (!courseName.equals("")), "Student::setCourseGrade(SemesterPair, String, String): " + "parameter String courseName reference must not be empty!"); Error.Assert( (GradeEntry.verifyGrade(newGrade)), "Student::setCourseGrade(SemesterPair, String, String): " + "parameter String newGrade reference must be valid grade!"); int loc = findSemester(semesterPair).index; if(findSemester(semesterPair).isFound) return transcriptArray[loc].setCourseGrade(courseName, newGrade); // return true //else return false; } public GradeResultPair getCourseGrade(SemesterPair semesterPair, String courseName) { Error.Assert( (semesterPair != null), "Student::getCourseGrade(SemesterPair, String): " + "parameter SemesterPair semesterPair reference must not be null!"); Error.Assert( (courseName != null), "Student::getCourseGrade(SemesterPair, String): " + "parameter String courseName reference must not be null!"); Error.Assert( (!courseName.equals("")), "Student::getCourseGrade(SemesterPair, String): " + "parameter String courseName reference must not be empty!"); int loc = findSemester(semesterPair).index; if(findSemester(semesterPair).isFound) return transcriptArray[loc].getCourseGrade(courseName); // returns a GradeResultPair //else return an empty, false GradeResultPair GradeResultPair result = new GradeResultPair(); result.grade = ""; result.isFound = false; return result; } public GPAResultPair getGPA() { double totalCredit = 0; double totalGrade = 0; double curGrade = 0; for(int i=0; i < transcriptArray.length; i++) { for(int j=0; j < transcriptArray[i].getGradeEntries().length; j++) { GradeEntry grd = transcriptArray[i].getGradeEntries()[j]; if(grd.getCourseGrade() != "-") totalCredit = totalCredit + grd.getCourseCredit(); if(grd.getCourseGrade().charAt(0)=='A') curGrade = 4; if(grd.getCourseGrade().charAt(0)=='B') curGrade = 3; if(grd.getCourseGrade().charAt(0)=='C') curGrade = 2; if(grd.getCourseGrade().charAt(0)=='D') curGrade = 1; if(grd.getCourseGrade().charAt(0)=='F') curGrade = 0; if(grd.getCourseGrade().length() == 2) { if(grd.getCourseGrade().charAt(1)=='-') curGrade -= .3; else if (grd.getCourseGrade().charAt(1)=='+') curGrade += .3; } totalGrade += curGrade; } } GPAResultPair gpa = new GPAResultPair(); //all pending if(totalCredit <= 0) { gpa.isLegitimateGPA = false; gpa.GPA = 0; } else { gpa.isLegitimateGPA = true; gpa.GPA = totalGrade/totalCredit; } return gpa; } public OutputData getCourseOutput(SemesterPair semesterPair, String courseName) { Error.Assert( (semesterPair != null), "Student::getCourseOutput(SemesterPair, String): " + "parameter SemesterPair semesterPair reference must not be null!"); Error.Assert( (courseName != null), "Student::getCourseOutput(SemesterPair, String): " + "parameter String courseName reference must not be null!"); Error.Assert( (!courseName.equals("")), "Student::getCourseOutput(SemesterPair, String): " + "parameter String courseName reference must not be empty!"); int loc = findSemester(semesterPair).index; if(findSemester(semesterPair).isFound) return transcriptArray[loc].getCourseOutput(courseName); //else return new OutputData(); //empty } public OutputData getSemesterOutput(SemesterPair semesterPair) { Error.Assert( (semesterPair != null), "Student::getSemesterOutput(SemesterPair): " + "parameter SemesterPair semesterPair reference must not be null!"); int loc = findSemester(semesterPair).index; if(findSemester(semesterPair).isFound) return transcriptArray[loc].getOutput(); //else return new OutputData(); //empty, no lines } public OutputData getOutput() { OutputData data = new OutputData(); data.append(lastName); data.append(firstName); data.append(uid); for(int i=0; i < transcriptArray.length; i++) data.append(transcriptArray[i].getOutput()); return data; } public void write(WriteFile writeHandle) { { Error.Assert( (writeHandle != null), "Student::write(WriteFile): " + "parameter WriteFile reference must not be null!"); Error.Assert( !writeHandle.isClosed(), "Student::write(writeFile): " + "cannot write to a closed file!"); writeHandle.println(firstName); // String writeHandle.println(lastName); //String writeHandle.println(uid); //String writeHandle.println(transcriptArray.length); // number of transcripts Int // in each SemesterTranscript, array of SemesterPair (season, year) for(int i=0; i < transcriptArray.length; i++) { writeHandle.println(transcriptArray[i].getSemesterPair().getSeason()); // season String writeHandle.println(transcriptArray[i].getSemesterPair().getYear()); // year Int writeHandle.println(transcriptArray[i].getNumCourses()); // number of courses in this semester Int // in each SemesterPair, array of GradeEntry (name, grade, credit) for(int j=0; j < transcriptArray[i].getNumCourses(); j++) { writeHandle.println(transcriptArray[i].getGradeEntries()[j].getCourseName()); // String writeHandle.println(transcriptArray[i].getGradeEntries()[j].getCourseCredit()); // Int writeHandle.println(transcriptArray[i].getGradeEntries()[j].getCourseGrade()); // String } } } } //two public class methods public static Student read(ReadFile readHandle) { Error.Assert( (readHandle != null), "Student::read(ReadFile): " + "parameter ReadFile reference must not be null!"); Error.Assert( !readHandle.isClosed(), "Student::read(readFile): " + "cannot read from a closed file!"); Student initStudent = new Student(readHandle.readString(), readHandle.readString(), readHandle.readString()); int transcriptNum = readHandle.readInt(); for(int i=0; i < transcriptNum; i++) { SemesterPair semesterPair = new SemesterPair(readHandle.readString(), readHandle.readInt()); int courseNum = readHandle.readInt(); for(int j=0; j < courseNum; j++) { String courseName = readHandle.readString(); int credit = readHandle.readInt(); String grade = readHandle.readString(); initStudent.addCourse(semesterPair, courseName, credit); initStudent.setCourseGrade(semesterPair, courseName, grade); } } return initStudent; } public static boolean verifyUID(String uid) { if(uid.length() == 9) { for(int i=0; i < uid.length(); i++) { if(!Character.isDigit(uid.charAt(i))) return false; } return true; } //else not 9 return false; }}