To add inputs to list like this
import java.util.ArrayList;
import java.util.Scanner;
public class StackOverflow {
public static void main(String[] args) {
ArrayList<String> inputList = new ArrayList<String>();
Scanner reader = new Scanner(System.in);
String input = reader.nextLine();
inputList.add(input);
while (!input.equals("null")) {
input = reader.nextLine();
inputList.add(input);
}
}
}