GaneshSamarthyam

private static List<String> readListStringsFromCSVFile(String filePath) throws IOException {
  List<String> fileEntries = new ArrayList<>();
  BufferedReader br = new BufferedReader(new FileReader(filePath));
  String line;
  while ((line = br.readLine()) != null) { 
    fileEntries.add(line);
  }
  return fileEntries;
}

GaneshSamarthyam

private static List<String> readListStringsFromCSVFile(String filePath) throws IOException {
 return Files.lines(Paths.get(filePath)).collect(Collectors.toList());
}

GaneshSamarthyam

private static List<String> readListStringsFromCSVFile(String filePath) throws IOException {
  return Files.lines(Paths.get(filePath)).collect(Collectors.toList());
}

GaneshSamarthyam

// Helper function to append values if not already present in the Map
protected void appendMapEntries(Map<String, List<String>> map, String key, List<String> values) {
  for (String value : values) {
    List<String> existingValues = map.get(key);
    if (existingValues == null) {
      existingValues = new ArrayList<String>();
      map.put(key, existingValues);
    }
    else {
      existingValues.add(value);

GaneshSamarthyam

// Helper function to append values if not already present in the Map
protected void appendMapEntries(Map<String, List<String>> map, String key, List<String> values) {
  values.forEach(value -> map.computeIfAbsent(key, k -> new ArrayList<>()).add(value));
}

GaneshSamarthyam

import java.util.Scanner;

class Main {
    public static void main(String[] args) {
        try {
            Scanner scanner = new Scanner(System.in);
            scanner.nextInt();
        } catch (Exception e) {
            System.out.println("enter an int");
        } finally {