Why string t is not adding in string s

Question

import java.util.Scanner;
public class Program
{
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int i = 4;
double d = 4.0;
String s = "HackerRank";
int m;
double n;
String t;

m = scan.nextInt();
n = scan.nextDouble();
t = scan.nextLine();

System.out.println(i+m);
System.out.println(d+n);
System.out.println(s+t);

}
}

Answer 1

Maybe you should concat the 2 strings?

Answer 2

I think there is a problem with the Scanner.

Answer 3

yes i heard about concat... how to do it

Answer 4

no