Asking User His Name - Nested If Else Statement

I want to ask a user his name. If he writes John, then program should answer "John is your first name." Is he writes Smith, the program should say "Smith is your last name." If user writes anything else, such as Sue, the program should state "This is not your name."

How to ask user input and also how to work with the nested if-else statement. For some reason I do not understand, my code always results in "This is not your name" even if user writes John or Smith.

import java.util.*;
public class NestedIfElse{
public static void main(String args[]) {
String name;
Scanner reader = new Scanner(System.in);
System.out.println("What is your name?");

[Code] ....