Program to check number is prime or not in java language.

import java.util.*;

public class prime {

 public static void main(String[] args) {

    int i;

    Scanner sc=new Scanner(System.in);

    System.out.println("enter a number=

");

    int n=sc.nextInt();

    if(n==1)

    System.out.println("number is not

prime.");

    for(i=2; i<n; i++){

        if(n%i==0)

        {

            System.out.println("number is

not prime.");

            break;

        }

    }

    if(n==i)

    System.out.println("number is prime

.");

 }  

}

    

■》 Output->

enter a number =>7

number is prime.