Sparse Arrays hackerrank solution in java

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;

class Result {

    /*
     * Complete the 'matchingStrings' function below.
     *
     * The function is expected to return an INTEGER_ARRAY.
     * The function accepts following parameters:
     *  1. STRING_ARRAY stringList
     *  2. STRING_ARRAY queries
     */

    public static List<Integer> matchingStrings(List<String> stringList, List<String> queries) {
        HashMap<String,Integer> hm = new HashMap<>();
        for(int i=0;i<stringList.size();i++){
            String s = stringList.get(i); 
            hm.put(s,hm.getOrDefault(s,0)+1);
        }
        List<Integer> res = new ArrayList<>();
        for(int i=0;i<queries.size();i++){
            String s = queries.get(i);
            if(hm.containsKey(s)){
                res.add(hm.get(s));
            }else{
                res.add(0);
            } 
        }
        return res;
    }

}

public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

        int stringListCount = Integer.parseInt(bufferedReader.readLine().trim());

        List<String> stringList = IntStream.range(0, stringListCount).mapToObj(i -> {
            try {
                return bufferedReader.readLine();
            } catch (IOException ex) {
                throw new RuntimeException(ex);
            }
        })
            .collect(toList());

        int queriesCount = Integer.parseInt(bufferedReader.readLine().trim());

        List<String> queries = IntStream.range(0, queriesCount).mapToObj(i -> {
            try {
                return bufferedReader.readLine();
            } catch (IOException ex) {
                throw new RuntimeException(ex);
            }
        })
            .collect(toList());

        List<Integer> res = Result.matchingStrings(stringList, queries);

        bufferedWriter.write(
            res.stream()
                .map(Object::toString)
                .collect(joining("\n"))
            + "\n"
        );

        bufferedReader.close();
        bufferedWriter.close();
    }
}