Java

Write code that reads in your text file. Do NOT use Scanner. Then, the program must write the course objects using ObjectOutputStream (writeObject) to a new binary file. Turn in the program that converts the text file to binary with both binary and text files.

  public static void main(String[] args) { CourseList myCourseList = new CourseList(); // Initialize scanner and file. Hard code file name File courseFile = new File("course.txt"); Scanner fileReader = null; // Try statement to catch exceptions / potential bugs. try { fileReader = new Scanner(courseFile); } catch (FileNotFoundException e) { System.out.println("Course(s) not found."); } while (fileReader != null && fileReader.hasNext()) { // Read in a line and parse into various attributes String courseCategory = fileReader.nextLine(); String courseName = fileReader.nextLine(); String crn = fileReader.nextLine(); // Loop to check type if (courseCategory.equals("English")) { String classType = fileReader.nextLine(); String academicClassification = fileReader.nextLine(); // Create ArrayList English tp = new English(courseCategory, courseName, crn, classType, academicClassification); myCourseList.addCourse(tp); } else if (courseCategory.equalsIgnoreCase("Math")) { String temp = fileReader.nextLine(); boolean stem = Boolean.parseBoolean(temp); String classType = fileReader.nextLine(); // Create ArrayList Math tp = new Math(courseCategory, courseName, crn, stem, classType); myCourseList.addCourse(tp); } else if (courseCategory.equalsIgnoreCase("History")) { String temp = fileReader.nextLine(); boolean eligible = Boolean.parseBoolean(temp); String classType = fileReader.nextLine(); // Create ArrayList History tp = new History(courseCategory, courseName, crn, eligible, classType); myCourseList.addCourse(tp); } else { System.out.println("Course unavailable " + courseCategory); } } Scanner sc = new Scanner(System.in); System.out.println("Course Main Menu: "); boolean done = false; while (!done) { System.out.println(""); System.out.println("Please enter a number to continue: "); System.out.println(" 1. View course list"); System.out.println(" 2. Search course by name"); System.out.println(" 3. Search course by CRN"); System.out.println(" 4. Remove course name"); System.out.println(" 5. Remove course CRN"); System.out.println(" 6. Exit"); String tp = sc.nextLine(); int menuInput = Integer.parseInt(tp); // Loop to check type user input. if (menuInput == 1) { myCourseList.printCourseList(); } else if (menuInput == 2) { System.out.println("Enter the name of the course: "); String id = sc.nextLine(); Course item = myCourseList.searchByCourse(id); if (item != null) { System.out.println(item); } else { System.out.println("Course not found."); } } else if (menuInput == 3) { System.out.println("Enter the CRN of the course: "); String id2 = sc.nextLine(); Course item2 = myCourseList.searchByCrn(id2); if (item2 != null) { System.out.println(item2); } else { System.out.println("Course not found."); } } else if (menuInput == 4) { System.out.println("Enter the name of the course to be removed from the list: "); String id3 = sc.nextLine(); myCourseList.removeCourse(id3); System.out.println(id3 + " has been removed from the list."); } else if (menuInput == 5) { System.out.println("Enter the CRN of the course to be removed from the list: "); String id4 = sc.nextLine(); myCourseList.removeCourseCrn(id4); System.out.println(id4 + " has been removed from the list."); } else { done = true; PrintWriter out = null; try { out = new PrintWriter(new File("course.txt")); System.out.println("List updated. Exiting program..."); } catch (FileNotFoundException e) { e.printStackTrace(); } for (Course r : myCourseList.getCourseList()) { out.println(r.getCourseCategory()); out.println(r.getCourseName()); out.println(r.getCrn()); if (r.getCourseCategory().equalsIgnoreCase("English")) { English e = (English) r; out.println(e.getClassType()); out.println(e.getAcademicClassification()); } else if (r.getCourseCategory().equalsIgnoreCase("Math")) { Math m = (Math) r; out.println(m.isStem()); out.println(m.classType()); } else if (r.getCourseCategory().equalsIgnoreCase("History")) { History h = (History) r; out.println(h.isEligible()); out.println(h.classType()); } else { System.out.println("Course category unknown " + r.getCourseCategory()); } } out.close(); } } sc.close(); } }

public class Math extends Course { private boolean isstem; private String classType; //Constructor public Math(String courseCategory, String courseName, String crn, boolean isstem, String classType) { super(courseCategory, courseName, crn); this.isStem = isstem; this.classType = classType; } //Getters / accessors public boolean isStem() { return isstem; } public String classType() { return classType; } //toString method @Override public String toString() { return super.toString() + | STEM Classification: + is Stem + | Class Type: + classType; } public class History extends Course { //Class attributes private boolean isEligible; private String classType; //Constructor public History (String courseCategory, String courseName, String crn, boolean isEligible, String classType) { super (courseCategory, courseName, crn); this.isEligible = isEligible; this.classType = classType; } //Getters / accessors public boolean isEligible() { return isEligible; } public String classType() { return classType; } //toString method @Override public String toString() { return super.toString() + " | Area E Eligible: " + isEligible + " | Class Type: " + classType; public class English extends Course { //Class attributes private String classType; private String academicClassification; //Constructor public English(String courseCategory, String courseName, String crn, String classType, String academicclassification) { super(courseCategory, courseName, crn); this.classType = classType; this.academicClassification = academicClassification; } //Getters accessors public String getClassType() { return classType; } public String getAcademicclassification() { return academicclassification; } //toString method @Override public String toString() { return super.toString() + " | Class Type: } + classType + " | Academic Classification: + academicClassification; public class Course { //Class attributes private String courseCategory; private String courseName; private String crn; //Constructor public Course(String courseCategory, String courseName, String crn) { super(); this.courseCategory = courseCategory; this.courseName = courseName; this.crn = crn; } //Getters / accessors public String getCourseCategory() { return courseCategory; } public String getCourseName() { return courseName; } public String getCrn() { return crn; } //toString method @Override public String toString() { return "Course Category: " + courseCategory + " | Course Name: } courseName + " | Course CRN: " + crn; } public class Math extends Course { private boolean isstem; private String classType; //Constructor public Math(String courseCategory, String courseName, String crn, boolean isstem, String classType) { super(courseCategory, courseName, crn); this.isStem = isstem; this.classType = classType; } //Getters / accessors public boolean isStem() { return isstem; } public String classType() { return classType; } //toString method @Override public String toString() { return super.toString() + | STEM Classification: + is Stem + | Class Type: + classType; } public class History extends Course { //Class attributes private boolean isEligible; private String classType; //Constructor public History (String courseCategory, String courseName, String crn, boolean isEligible, String classType) { super (courseCategory, courseName, crn); this.isEligible = isEligible; this.classType = classType; } //Getters / accessors public boolean isEligible() { return isEligible; } public String classType() { return classType; } //toString method @Override public String toString() { return super.toString() + " | Area E Eligible: " + isEligible + " | Class Type: " + classType; public class English extends Course { //Class attributes private String classType; private String academicClassification; //Constructor public English(String courseCategory, String courseName, String crn, String classType, String academicclassification) { super(courseCategory, courseName, crn); this.classType = classType; this.academicClassification = academicClassification; } //Getters accessors public String getClassType() { return classType; } public String getAcademicclassification() { return academicclassification; } //toString method @Override public String toString() { return super.toString() + " | Class Type: } + classType + " | Academic Classification: + academicClassification; public class Course { //Class attributes private String courseCategory; private String courseName; private String crn; //Constructor public Course(String courseCategory, String courseName, String crn) { super(); this.courseCategory = courseCategory; this.courseName = courseName; this.crn = crn; } //Getters / accessors public String getCourseCategory() { return courseCategory; } public String getCourseName() { return courseName; } public String getCrn() { return crn; } //toString method @Override public String toString() { return "Course Category: " + courseCategory + " | Course Name: } courseName + " | Course CRN: " + crn; }