ExceptionManager.java

// Manages custom exceptions used throughout the student management system
public class ExceptionManager {
    // Thrown when a person type in the input file is not recognized
    public static class InvalidPersonTypeException extends Exception {
        public InvalidPersonTypeException(String type) {
            super("Invalid Person Type");
        }
    }

    // Thrown when a student with the given ID cannot be found
    public static class NonExistentStudentException extends Exception {
        public NonExistentStudentException(String id) {
            super("Student Not Found with ID " + id);
        }
    }

    // Thrown when an academic member with the given ID cannot be found
    public static class NonExistentAcaMemberException extends Exception {
        public NonExistentAcaMemberException(String id) {
            super("Academic Member Not Found with ID " + id);
        }
    }

    // Thrown when a department with the given name does not exist
    public static class NonExistentDeptException extends Exception {
        public NonExistentDeptException(String deptName) {
            super("Department " + deptName + " Not Found");
        }
    }

    // Thrown when a program code does not exist in the system
    public static class NonExistentProgException extends Exception {
        public NonExistentProgException(String code) {
            super("Program " + code + " Not Found");
        }
    }

    // Thrown when a course code does not exist in the system
    public static class NonExistentCourseException extends Exception {
        public NonExistentCourseException(String code) {
            super("Course " + code + " Not Found");
        }
    }

    // Thrown when a grade is not recognized as a valid letter grade
    public static class InvalidGradeException extends Exception {
        public InvalidGradeException(String grade) {
            super("Invalid Letter Grade: " + grade);
        }
    }
}