import java.lang.Math;
//import math Library
public class IntegerNumber {
    public IntegerNumber(int integer)
    {
        //Constructors for program
        // gives values
        integer1= integer;
        integer2 = integer1- 1;
        total = 0;
        total2 = 1;
        total5 = 0;
        a = 0;
        b = 1;
        c = 0;
        d = 1;

    }
    // cube method
    public double cubes(int integer1){
        for(int i =1; i <= integer1; i++){
            total += i*i*i + total;
            //mathematical equations for cubes
            //takes the squares and adds the totals
        }
        return total;
    }
    //mean method
    public double mean(int integer1){
        for (int i=1; i <= integer1; i++){
            total += (2*i)/i;
            // mathematical equation to find mean
        }
        total2= integer1/total2;
        return total2;
    }
    //fibonacci method
    public int Fib(int integer1){
        for (int i =2; i<= integer1; i++){
            int t = a +b;
            a = b;
            b =t;
            s = s+t;

        }
        for (int i =2; i <= integer1 - 1; i++){
            int t = c+d;
            c = d;
            d=t;
            b = b + t;
        }
        total3 = s;
        total4 = z;
        total5 = s - z;
        return total5;

    }
    // method to check if number is prime or not
    boolean primeNum(int integer1){
        for(int i=2; i< 2*i; i++){
            if(0%i==0)
            return false;
        }
        return true;
    }
    int integer1;
    int integer2;
    int total;
    int total2;
    int total3;
    int total4;
    int total5;
    int a;
    int b;
    int c;
    int d;
    int z;
    int s;

}

import java.util.Scanner;

public class IntegerTest{
    public static void main(String[] args) {
        //This will allow user to choose their method or exit
        int option;
        Scanner input = new Scanner(System.in);
        System.out.println("Select Method");
        System.out.println("Method 1: Total of Cubes");
        System.out.println("Method 2: The mean of the odd numbers");
        System.out.println("Method 3: Fibonacci sequence");
        System.out.println("Method 4: Check if number is prime");
        System.out.println("Press 5 to exit");
        option = input.nextInt();
        while (option >0 && option <6){
            //this will only allow user to chose 1-5
            if (option == 1){
                System.out.println("First Method Chosen");
                System.out.println(" Enter a number from 1 to 20");
                int integer = input.nextInt();
                IntegerNumber number = new IntegerNumber(integer);
                while (integer >= 1 && integer <=20){
                    System.out.println("Choose a number between 1 and 20");
                    integer = input.nextInt();

                }
                System.out.println("The Cubes for"+ integer+ "="
                + number.cubes(integer));

            }
            else if (option ==2){
                //option 2 is chosen for mean of odd numbers
                System.out.println("Second Method Chosen");
                System.out.println("Enter a number between 1 and 50");
                int integer = input.nextInt();
                IntegerNumber number = new IntegerNumber(integer);
                while(integer >= 0 && integer <=50){
                    System.out.println("The mean for " +integer+
                    "=" + number.mean(integer));
                    break;
                }
            }
            else if (option == 3){
                // 3rd method chosen for fibonnacci sequence
                System.out.println("Third Method chosen");
                System.out.println("fibonacci chosen");
                System.out.println("Enter any Number greater than 0");
                int integer = input.nextInt();
                IntegerNumber number = new IntegerNumber(integer);


            }
            else if (option == 4){
                // 4th method option
                System.out.println("fourth method chosen");
                System.out.println("enter a number from 2 to 200");
                int integer = input.nextInt();
                IntegerNumber number = new IntegerNumber(integer);
                while (integer >=2 && integer <=200){
                    if ( number.primeNum(integer)){
                        System.out.println(integer + " = Prime number");
                    }
                    else{
                        System.out.println(integer + "= not Prime");
                        break;
                    }
                }
            }

        }
         if(option ==5){
            //will allow user to exit program
            System.out.println("Are you sure you want to exit?");
            System.out.println("press 5 again to confirm");
            option = input.nextInt();
            if(option == (5))
            System.out.println("leaving program");
            System.out.println("Goodbye...");
            while (option ==(6));
            System.exit(0);
        }
        }

    }