I want to read the input from my scanner into an arraylist. I already tried it but I always got a NullPointerException. Can somebody tell me why?
private static ArrayList<String> allWords;
private static int numberOfWords;
public static void main (String[] args) {
Scanner sc = new Scanner(System.in);
while (sc.hasNext())
{
String s = sc.next();
allWords.add(s);
numberOfWords++;
}
sc.close();
}