07.Sums by Town

package com.company;

import java.util.Scanner;
import java.util.TreeMap;

public class SumsByTown {
    public static void main(String[] args){
        Scanner s = new Scanner(System.in);

        int n = s.nextInt();

        TreeMap<String, Double> towns = new TreeMap<>();

        for (int i = 0; i < n; i++) {
            String[] tokens = s.nextLine().split("\\|");
            String town = tokens[0].trim();
            double value = Double.parseDouble(tokens[1].trim());

            if(towns.containsKey(town)){
                towns.put(town, towns.get(town) + value);
            }
            else {
                towns.put(town, value);
            }
        }

        for (String town : towns.keySet()) {
            System.out.println(String.format("%s -> %f", town, towns.get(town)));
        }
    }
}