Java Hashmap -- Key Value Pairs from Stdin to HashMap

Question

Java Hashmap -- Is it possible to read key value pairs from standard input directly into a hash map structure?

Say user types in

4 3 
1 1
3 2
2 2 
4 3 

My idea is to do some sort of loop with repeated put.

Answer 1

Not really sure how you want to add them, as int's or Strings, but remember they have to be Objects.

class Inp {
    public void scan() {
        Scanner sc = new Scanner(System.in);

        HashMap<Integer,Integer> map = new HashMap<Integer,Integer>();
        while (true) {
            String sr = sc.nextLine();
            String[] tk = sr.split(" ");
            Integer key = 0, value = 0;
            try {
                key = Integer.parseInt(tk[0]);
                value = Integer.parseInt(tk[1]);
            }
            catch (NumberFormatException e) {
                break;
            }
            map.put(key,value);
        }

    }

    public static void main(String[] args) {
       Inp inp = new Inp();
       inp.scan();

    }
}

VERRRRYYYY long winded but you get the idea. Put in anything besides an integer to break out of the loop. Didn't know what you wanted.