I am not able to understand Scanner or I should say the inputs from console

Question

I am not able to understand Scanner or I should say the inputs from console

public class Calculate {

    public static void main(String[] args) throws IOException {
        System.out.println("enter the lines");
        Scanner s = new Scanner(System.in);
         ArrayList<String> result = new ArrayList<String>();
         String line = "";
         while((line = s.nextLine()) != null) {
             result.add(line);
         }
         for(String ss : result){
             System.out.println(ss);
         }
    }
}

Console :
enter the lines
[Inputs on console:]
aa
bb
cc

When I run in debug mode, the string aa and bb are added to List result, but when cc is read from scanner, it is not added to List I am not sure, what I am missing. looks silly to me, but some how I am not able to think what I am missing

Answer 1

This (slightly) amended code works as expected (you can exit the program by entering an empty string):

public static void main(String[] args) {
    System.out.println("enter the lines");
    Scanner s = new Scanner(System.in);
    ArrayList<String> result = new ArrayList<String>();
    String line = "";
    while ((line = s.nextLine()) != null) {
        if (line.isEmpty()) break;
        result.add(line);
    }
    for (String ss : result) {
        System.out.println(ss);
    }
}

It outputs exactly what is inputed.