JAVA | Write a program to find out whether entered no. is prime or not.

import java.util.*;

class prime

{

public static void main(String args[])

{

int flag=0;

Scanner sc=new Scanner(System.in);

System.out.println("Enter a number :");

int n=sc.nextInt();

for(int i=2;i<n;i++)

{

if(n%i==0)

{

flag=1;

break;

}

}

if(flag==0)

System.out.println(n +" is prime");

else

System.out.println(n +" is not prime");

}

}