Java Program to Check Whether a Number is Prime or Not

In this example, You learn about Java program to check Prime Number. 

Here you learn check prime of number in Java, You are given a number N and the task of the program to prime check in Java.

prime number java

A prime number is a natural number and that is greater than 1. Prime Number is divisible by 1 or itself. Therefore, Any number divisible by any other number instead of 1 and itself is not a prime number. 

0 and 1 are not considered as a prime numbers. 

Java Program to check Prime of Number

import java.util.*;

public class Main{
    public static void main(String[] args) {
        Scanner scn = new Scanner(;
        int n;
        boolean flag = false;
        n = scn.nextInt();
        int count  = 0;
        for(int i = 2; i*i <=n ;i++){
            if(n%i == 0){
        if(count == 0){
            System.out.println("not prime");


 not prime

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