User-Defined Classes Java Programming Rational fractions are of the form a / b, where a and b are integers and != 0. In this exercise, by "fractions" we mean rational fractions. Suppose that a / b and c / d are fractions. Arithmetic oerations on fractions are defined by the following rules: Design the class Fraction that can be used to manipulate fractions in a program. Among others, the class Fraction must include methods to add, subtract, multiply, and divide fractions. When you add, subtract, multiply, or divide fractions, your answer need not be in the lowest terms . Also, override the method toString so dthat the fractions can be output using the output statement. Write a Java program that, using the class Fraction, performs operations on fractions. Thank you

A programmer has submitted the following class declaration for approval. This will be part of a program that tracks departments within a company and employees assigned to those departments. class Employee { public: Employee(); string getName(); long getldentifier(); Dollars getSalary(): Department worksln(): void assignTo (Department"); Employee getSupervisor() (return dept->getManager();) private: string name; long identifier; Department" dept; Dollars salary: Based upon this information, which of the C++ checklist items appear to be in violation? O Interface completeness O Meaningful names O Undocumented pre-conditions O All data members private O Every constructor initializes every data member O Appropriate treatment of default constructor O Appropriate treatment of the Big 3 O Appropriate relational operators O Appropriate output function D Const correctness

Flight assignment runs but there is no imput values for the user to interact when running the program. Kindly fix this issue.import java.util.*; class Flight {    String airlineCode;    int flightNumber;    char type; // D for domestic, I for international    String departureAirportCode;    String departureGate;    char departureDay;    int departureTime;    String arrivalAirportCode;    String arrivalGate;    char arrivalDay;    int arrivalTime;    char status; // S for scheduled, A for arrived, D for departed     public Flight(String airlineCode, int flightNumber, char type, String departureAirportCode,                  String departureGate, char departureDay, int departureTime,                  String arrivalAirportCode, String arrivalGate, char arrivalDay, int arrivalTime) {        this.airlineCode = airlineCode;        this.flightNumber = flightNumber;        this.type = type;        this.departureAirportCode = departureAirportCode;        this.departureGate = departureGate;…