Query implementation

gistfile1.java

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import static java.util.stream.Collectors.groupingBy;
import static java.util.stream.Collectors.summingInt;

public class StackStuff {
    public static void main(String [] args) {
        Report report = new Report();
        Map<String, Integer> map = report.getQueries()
                                         .stream()
                                         .collect(groupingBy(q -> q.getChoice(),
                                                  summingInt((Query q)-> q.queryOutput)));
        System.out.println(map); //{Choice1=2, Choice2=1}
    }
}

class Report {
    List<Query> getQueries() {
        return Arrays.asList(new Query("Choice1"), new Query("Choice1"), new Query("Choice2"));
    }
}
class Query {
    String choices;
    int queryOutput = 1;

    public Query(String choices) {
        this.choices = choices;
    }

    public String getChoice() {
        return this.choices;
    }
}