PRIME NUMBER

import java.util.*;
class Prime
{
public static void main(String args[]){
Scanner s=new Scanner(System.in);
 int i,m=0,flag=0;  
 System.out.println("enter number");
 int n=s.nextInt();
 m=n/2;  
 for(i=2;i<=m;i++){  
  if(n%i==0){  
  System.out.println("Number is not prime");  
  flag=1;  
  break;  
  }  
 }  
 if(flag==0)  
 System.out.println("Number is prime");  
}
 }