Fibonacci series in java

Hello guys , welcome to lingarajtechhub.com. Today we are going to discuss the Fibonacci series in java.

package com.fibonaci_series.java;
import java.util.Scanner;

public class Fibonacci_series {

public static void main(String[] args) {
int n,a=0,b=1,c;
Scanner Sc=new Scanner(System.in);
System.out.println("enter the value of n");
n=Sc.nextInt( );
for(int i=1;i<=n;i++) {
System.out.println(a+" ");
c=a+b;
a=b;
b=c;

     }
   }
  }

Line-1:

❖ Package com.fibonacci_series.java;

It is a java package( com.fibonacci_series.java) which is a collection of classes and this package is created in a java project .

Line-2:

❖ import java.util.Scanner;

Scanner is a class in java. util package used for obtaining the input of the primitive types like int, double, etc. and strings .

Line-4:

❖ public class Fibonacci_series

*Here Fibonacci_series is defined as a class which is a template used to create objects and to define object data types and methods . >–and it’s defined as public because it can be accessed anywhere .

Line-6:

❖ public static void main(String[] args)

>>– it is a main method in which we can execute a program //public :it is an access modifier of the main function which must be public so that the JVM which is (Java Virtual Machine)can access and execute this method.

//If a method is not public, then access is restricted and its showing error //static is a keyword in which main method has must to be static in which JVM can load the class into memory and call the main method without creating an instance

//void it means no return type

//main() is function string[]args : string means collection of characters ,String[] args represents a collection of Strings that are separated by a space and can be typed into the program on the terminal directly

Line-7:

❖ int n,a=0,b=1,c;

>>– here we declare n as a variable which is integer type,and take the value of a=0, similarly the value of b is 1 and c is a variable.

Line-8:

❖ Scanner sc=new Scanner(System.in);

>>–it means here scanner is a class and Sc is the instance of the object which is new Scanner.System.in is an argument

Line-9:

❖ System.out.println(“Enter the value of n “);

>>– it means System is a class name and out is an instance of the System println is print a new line .

Line-10:

n=sc.nextInt();

>>– here n is a variable that we take and Sc is our instance name which is created for an object and nextInt() is a method method of a Scanner object that reads in a string of digits or char and converts them into an int type.

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