Write a program to create a multilevel package and also creates a reusable class to generate Fibonacci series, where the function to generate Fibonacci series is given in a different file belonging to the same package

Write a program to create a multilevel package and also creates a reusable class to generate Fibonacci series, where the function to generate Fibonacci series is given in a different file belonging to the same package.

Program:

Code of Package

• Make a Folder of any name eg. Fibpackage

• Under that folder put code of package with any name eg. Fibpackage.java

package Fibpackage;

public class Fibpackage {

    protected int num1 = 0, num2 = 1, num3;

}

Code to import Package

• import the code of package file you put in your folder

• in my case folder is MultiFile and name of code file is Fibpackage.java so import Fibpackage.Fibpackage.java

import java.util.Scanner;

import Fibpackage.*;

public class Fibonacci {

  public static void main(String args[]) {

    Scanner sc = new Scanner(System.in);

    System.out.println("How Many Number Do you want of Fibonacci Series");

    int num = sc.nextInt();

    Fib p1 = new Fib();

    p1.fibonacci(num);

    sc.close();

  }

}

class Fib extends Fibpackage {

  void fibonacci(int n) {

    if (n == 1) {

      System.out.print(num1);

    } else if (n == 2) {

      System.out.print(num1 + " , " + num2);

    } else if (n > 2) {

      System.out.print(num1 + " , " + num2 + " , ");

      for (int i = 0; i < n - 2; i++) {

        num3 = num1 + num2;

        System.out.print(num3 + " , ");

        num1 = num2;

        num2 = num3;

      }

    }

  }

}

OutPut: