Item Parser

package scripts;

import java.io.*;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;

public class ItemParser {

    static HashMap<String, Integer> ALL = new HashMap<>(), F2P = new HashMap<>(), P2P = new HashMap<>();

    public static void main(String[] args) {

        try {

            URL url = new URL("https://rsbuddy.com/exchange/summary.json");

            try (BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()))) {

                String summary = reader.readLine();

                if (summary == null) {
                    return;
                }

                String[] pieces = summary.split(": \\{");

                for (String piece : pieces) {

                    String[] split = piece.split(":");

                    String name = null; Integer ID = null; Boolean membership = null;

                    for (int i = 0; i < split.length; i++) {

                        if (split[i].contains("\"id\"")) {
                            ID = Integer.parseInt(split[i + 1].split(",")[0].replaceAll("[^\\d.]", "").trim());
                        } else if (split[i].contains("\"name\"")) {
                            name = split[i + 1].split(",")[0].replaceAll("\"", "").replaceAll("}", "").trim();
                        } else if (split[i].contains("\"members\"")) {
                            membership = Boolean.parseBoolean(split[i + 1].split(",")[0].replaceAll("\"", "").replaceAll("}", "").trim());
                        }
                    }

                    if (name == null || ID == null || membership == null) {
                        continue;
                    }

                    ALL.put(name, ID);

                    if (membership) {
                        P2P.put(name, ID);
                    } else {
                        F2P.put(name, ID);
                    }
                }
            }

            System.out.println("Found " + ALL.size() + " items, " + P2P.size() + " of which were members only and " + F2P.size() + " were not.");

            // WRITE TO DESKTOP

            String home = System.getProperty("user.home") + "/Desktop";
            File fileALL = new File(home, "ALL.txt"), fileP2P = new File(home, "P2P.txt"), fileF2P = new File(home, "F2P.txt");

            try (BufferedWriter out1 = new BufferedWriter(new FileWriter(fileALL));
                 BufferedWriter out2 = new BufferedWriter(new FileWriter(fileP2P));
                 BufferedWriter out3 = new BufferedWriter(new FileWriter(fileF2P))) {

                ArrayList<String> names = new ArrayList<>(ALL.keySet());
                Collections.sort(names);

                for (String name : names) {
                    out1.write(name + ":" + Integer.toString(ALL.get(name)));
                    out1.newLine();
                }

                names = new ArrayList<>(P2P.keySet());
                Collections.sort(names);

                for (String name : names) {
                    out2.write(name + ":" + Integer.toString(P2P.get(name)));
                    out2.newLine();
                }
                names = new ArrayList<>(F2P.keySet());
                Collections.sort(names);

                for (String name : names) {
                    out3.write(name + ":" + Integer.toString(F2P.get(name)));
                    out3.newLine();
                }
            }

        } catch (Exception e) {

            System.out.println("Failed to read RSBuddy summary page:");
            e.printStackTrace();
        }

        System.out.println("Finished. The files are on your desktop.");
    }
}