Untitled

import java.util.* ;

// task 1 starts
abstract class student{

    abstract void take_exam();
}
class phdStudent extends student{
    void take_exam(){
        System.out.println("PHD student takes FINAL DEFENSE EXAM");
    }
}
class gradStudent extends student{
    void take_exam(){
        System.out.println("Grad student takes WRITTEN PAPER EXAM");
        System.out.println(" ");
    }
}
// task 1 ends



// task 2 starts

interface Movvable{

    void moveUp();
    void moveDown();
    void moveLeft();
    void moveRight();
}
class movvablePoint implements Movvable{
    int up=0, down=0, left=0, right=0;
    public void moveUp(){
        System.out.println("Up is: " + ++up);
    }
    public void moveDown(){
        System.out.println("Down is: " + ++down);
    }
    public void moveLeft(){
        System.out.println("Left is: " + ++left);
    }
    public void moveRight(){
        System.out.println("Right is: " + ++right);
        System.out.println(" ");
    }
}
class movvableCircle implements  Movvable{
    int up=0, down=0, left=0, right=0;
    public void moveUp(){
        System.out.println("Up is: " + (up+=5));
    }
    public void moveDown(){
        System.out.println("Down is: " + (down+=5));
    }
    public void moveLeft(){
        System.out.println("Left is: " + (left+=5));
    }
    public void moveRight(){
        System.out.println("Right is: " + (right+=5));
        System.out.println(" ");
    }
}
// task 2 ends


// task 4 starts
interface AdvancedArithmatic{
    void divisorSum(int n);
}

class MyCalc implements AdvancedArithmatic{
    int i, sum=0;
    public void divisorSum(int n){
        for(i=1; i<=n; i++){
            if(n%i == 0){
                System.out.println("Divisor: "+ i);
                sum += i;
            }
        }
        System.out.println("Sum of divisors are: "+ sum);
    }
}
// task 4 ends


//task 7 starts
interface Account{
    void getName();
    void setName();
    void getPass();
}

interface Email{
    void getOTP();
    void setOTP();
    void verifyEmail();

}

class person implements Account, Email{
    String name, pass, OTP, realOTP = "42060";
    public void getName() {
        System.out.println("Enter name: ");
        Scanner sc = new Scanner(System.in);
        name = sc.nextLine();
    }

    public void setName(){
        System.out.println("The name is: "+ name);
    }

    public void getPass(){
        System.out.println("Enter Password: ");
        Scanner sc1 = new Scanner(System.in);
        pass = sc1.nextLine();
    }

    public void getOTP(){
        System.out.println("Enter OTP: ");
        Scanner sc2 = new Scanner(System.in);
        OTP = sc2.nextLine();


    }

    public void setOTP(){
        System.out.println("Your OTP is: "+ OTP);
        if(OTP==realOTP){
            System.out.println("OTP has matched");
        } else {
            System.out.println("OTP didnt match");
        }
    }

    public void verifyEmail(){
        System.out.println("Your email is verified ");
    }
}



//task 7 ends
public class Main {
    public static void main(String[] args) {

        //task 1
        student st = new phdStudent();
        st.take_exam();
        student st2 = new gradStudent();
        st2.take_exam();

        //task 2
        Movvable movc = new movvableCircle();
        movc.moveUp();
        movc.moveUp();

        Movvable movp = new movvablePoint();
        movp.moveUp();



        //task 4
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter a number to get of its Divisors: ");
        int n =  sc.nextInt();

        AdvancedArithmatic ar = new MyCalc();
        ar.divisorSum(n);


        // task 7
        person p = new person();
        p.getName();
        p.setName();
        p.getPass();

        p.getOTP();
        p.setOTP();
        p.verifyEmail();


    }
}