A miner task

import javax.xml.crypto.dsig.keyinfo.KeyValue;
import java.security.Key;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.concurrent.ConcurrentHashMap;

public class MinerClass {

    public static void main(String[] args) {
        Scanner scanner= new Scanner(System.in);
        LinkedHashMap<String,Integer> dict = new LinkedHashMap<>();


        while(true){
            String resource = scanner.nextLine();
            if(resource.equals("stop")){
                break;
            }
            if (!dict.containsKey(resource)) {
                dict.put(resource, 0);
            }
            Integer quantity = Integer.parseInt(scanner.nextLine());
            dict.put(resource, dict.get(resource) + quantity);

        }
        for (Map.Entry<String, Integer> pair:dict.entrySet())
        {
            System.out.printf("%s -> %d%n",pair.getKey(),pair.getValue());
        }


    }
}