Write a program to reading 10 numbers from the keyboard and find their sum and average.

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Hello, guys, welcom to Lingarajtechhub. Today we are going to discuss reading 10 numbers from the keyboard and find their sum and average.


package com.control_loop.java;
public class sum_avg_natural_number {
	public static void main(String[] args) {
		 int sum=0;
		 System.out.println(" 10 natural numbers are : ");
			for(int i=50;i<=60;i++) {
				sum +=i;		
		 double avg=sum/10;
		 System.out.println("The Sum and average of Natural Number is : " +sum +avg );	


package com.Operators.Java;

  •  It is a java package which is a collection of classes and this package is created in a java project(Homework_operator).
  • Here com.operators.java is the name of our package.


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 .


public class Sum_avg_natural_number

  • Here “Sum_avg_natural_number” is defined as a class which is a template used to create objects ,& to define object ,data type and method.
  • It is defined as public because it can be accessed anywhere.
  • It is the entry point to the application.


public static void main(String[] args);

  • This is the main () method of our java program .
  • Every java program must contain the main() method .
  • Public : It is the access modifier of the main function which must be public so that the JRE can access and execute this method.
    • If a method is not public then access is restricted and its showing error.
  • Static : Static is a keyword in which the main method has 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 types.
  •  Main() :  It is a 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.


int i,sum;

  • Here we Declare 2 variables i,sum which is integer type and int is a local variable.


Scanner Sc = new Scanner(System.in);

  • Here scanner is a class and Sc is the instance of the object which is the new Scanner. System.in is an argument.



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


 for(i=50; i<=60 ; i++ ) {

System.out.println(i); }

sum + = i ; }

  • for(initialization; condition; increment/decrement)

It is used when we want to perform initialization,condition & increment/decrement in one single line.

  • sum +=1 is add every input number 


 System.out.println(  );

  •   It means System is a class name and out is an instance of the System println is to print a new line and “+” means coordinate.

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Myself Sonalin Shaoo. I am quite happy to contribute here some java programming content and my friends Lipsa Mohanty ,Sushil Puhan, Aswin Kumar Nayak also help me to contribute their Opinion on this .

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