null problem?

Question about the task

Under discussion

package com.codegym.task.task03.task0322; /* Deep and pure love */ import java.io.*; public class Solution { public static void main(String[] args) throws Exception { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); String name1= reader.readLine(); String name2= reader.readLine(); String name3= reader.readLine(); System.out.println(name1+ " + "+name2+ " + "+name3+" "+ " = Pure love. Ooo la-la!"); } } When I run the code the communicat is shown: null + null + null = Pure love. Ooo la-la! But the task is completed with success...