Sum of n Prime Number

import java.util.Scanner;


public class que4_prime {

    public static void main(String[] args) {
        // TODO Auto-generated method stub


         int r, sum=0;
            System.out.print("Enter Range:");
            Scanner get = new Scanner(System.in);
            r = get.nextInt();
            System.out.println();
            for(int i=2;i<= r;i++)
            {
                int flag=0;
                for(int j=2;j<i;j++)
                {
                    if(i%j==0)
                        flag=1;
                }
                if(flag==0)
                {
                    System.out.print(i+" ");
                    sum=sum+i;
                }
            }
            System.out.println("\nSum = "+sum);

    }

}