Star Enigma

import java.util.;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        int n = Integer.parseInt(scanner.nextLine());

        MapString, ListString result = new LinkedHashMap();
        result.put(Attacked planets, new ArrayList());
        result.put(Destroyed planets, new ArrayList());

        Pattern pattern = Pattern.compile(([^@-!]) +
                (planet@[A-Za-z]+)([^@-!]) +
                (populationd+)([^@-!]) +
                (typeOfAttack![AD]!)([^@-!]) +
                (soldierCount-d+)([^@-!]));

        for (int i = 0; i  n; i++) {
            String input = scanner.nextLine();
            int key = 0;
            key = getKey(input, key);
            input = decryptMsg(input, key);

            Matcher matcher = pattern.matcher(input);

            if (matcher.find()) {

                String planet = matcher.group(planet).substring(1);
                int population = Integer.parseInt(matcher.group(population).substring(1));
                String typeOfAttack = matcher.group(typeOfAttack).substring(1, matcher.group(typeOfAttack).length() - 1);
                int soldierCount = Integer.parseInt(matcher.group(soldierCount).substring(2));

                switch (typeOfAttack) {
                    case A
                        String mapKey = Attacked planets;
                        result.get(mapKey).add(planet);
                        break;
                    case D
                        mapKey = Destroyed planets;
                        result.get(mapKey).add(planet);
                        break;
                }
            }
        }
        for (Map.EntryString,ListString planets  result.entrySet()){
            System.out.println(String.format(%s %d,planets.getKey(),planets.getValue().size()));

            planets.getValue().sort((e1,e2)-e1.compareTo(e2));

            for (int i = 0; i  planets.getValue().size(); i++) {
                System.out.println(String.format(- %s,planets.getValue().get(i).toString().replaceAll([],)));
            }

        }
    }

    private static int getKey(String input, int key) {
        for (int i = 0; i  input.length(); i++) {
            if (input.toLowerCase().charAt(i) == 's'
                    input.toLowerCase().charAt(i) == 't'
                    input.toLowerCase().charAt(i) == 'a'
                    input.toLowerCase().charAt(i) == 'r') {
                key++;
            }
        }
        return key;
    }

    private static String decryptMsg(String input, int key) {
        StringBuilder result = new StringBuilder();
        for (int i = 0; i  input.length(); i++) {
            result.append((char) (input.charAt(i) - key));
        }
        return result.toString();
    }

}