Write a Java program to check whether the number is a prime number or not

Introduction

In this demo I have used NetBeans IDE 8.2 for debugging purpose. But you can use any java programming language compiler as per your availability..

import java.util.Scanner;
 
public class JavaLoopExcercise
{
    public static void main(String[] args)
    {
        Scanner console = new Scanner(System.in);
 
        int number;
 
        System.out.print("Enter the positive integer ");
        number = console.nextInt();
 
        boolean flag = true;
 
        for(int i = 2; i < number; i++)
    {
        if(number % i == 0)
            {
                flag = false;
                break;
            }
        }
 
    if(flag && number > 1)
        {
            System.out.println("Number is prime");
        }
    else
        {
            System.out.println("Number is not prime");
        }
 
    }  
}

Result

Write a Java program to check whether the number is a prime number or not
Write a Java program to check whether the number is a prime number or not

2 thoughts on “Write a Java program to check whether the number is a prime number or not”

  1. Mr. Rohit Mhatre. You have made really helpful content / Questions and answers in this page. Keep rocking and helping the beginners. I absolutely loved it. And thanks a lot for putting this all together for self learners.

    Reply

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