Answer:
import java.util.Scanner;
//The Temperature Class Begins Here
public class Temperature {
    private double ftemp;
//The constructor
    public Temperature(double ftemp) {
        this.ftemp = ftemp;
    }
//Get farenheit Method
    public double getFtemp() {
        return ftemp;
    }
//Set farenheit method
    public void setFtemp(double ftemp) {
        this.ftemp = ftemp;
    }
// Get Celcius Method
    public double getCelcius(double ftemp){
        //double celcius =  (double) (5/9) * (ftemp - 32);
        double   celcius = (ftemp-32)* (double)5/9;
        return celcius;
    }
// Get Kelvin Method
    public double getKelving(double ftemp){
        double Kelvin;
        Kelvin = (ftemp-32)*(double)5/9 + 273.15;
        return Kelvin;
    }
}
//The Temperature Class Ends Here
//The Temperature Test Class with a main method begins Here
class TemperatureTest{
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
//Prompt User for value in fahrenheit
        System.out.println("Enter·a·Fahrenheit·temperature:");
        double ftem = in.nextDouble();
        //Making the instance of the Temperature class
        Temperature temp = new Temperature(ftem);
        //Outputing Results
        System.out.println("The·temperature·in·Fahrenheit·i: "+ftem);
        System.out.println("The·temperature·in·Celcius·is: "+ temp.getCelcius(ftem));
        System.out.println("The·temperature·in·Kelvin·is: " + temp.getKelving(ftem));
    }
}
Explanation:
This is implemented in Java programming Language
Explanations are provided as comments within the code