Easy Decipher for Minecraft Music

main.java

package me.deathline;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.StandardCopyOption;

import com.google.gson.stream.JsonReader;

/**
 * Created by NEOPETS on 6/17/2015.
 */
public class Main {

    public static void main(String[] args) {
        long time = System.nanoTime();
        File workingDir = new File(System.getProperty("user.dir"));
        File objectsDir = new File(workingDir.getParentFile(), "objects");
        System.out.println("Current Working Directory: " + workingDir.getAbsolutePath());
        System.out.println("Creating music storage directory...");
        File musicStorageDir = new File(workingDir, "Music-Storage");
        if (!musicStorageDir.exists())
            musicStorageDir.mkdir();
        System.out.println("Created at: " + musicStorageDir.getAbsolutePath());
        System.out.println();
        File jsonFile = workingDir.listFiles()[0];
        System.out.println("Starting decoding process... ");
        System.out.println();
        try {
            JsonReader reader = new JsonReader(new FileReader(jsonFile));
            reader.beginObject();

            while (reader.hasNext()) {
                String object = reader.nextName();
                reader.beginObject();
                 while (reader.hasNext()) {
                     String name = reader.nextName();
                     if (name.contains("music")) {
                         String musicActualName = name.split("/")[name.split("/").length - 1];
                         System.out.println("Music Name: " + musicActualName);
                         reader.beginObject();
                         while (reader.hasNext()) {
                             if (reader.nextName().equalsIgnoreCase("hash")) {
                                 String hash = reader.nextString();
                                 System.out.println("Hash: " + hash);
                                 String firstTwoChar = hash.substring(0, 2);
                                 File musicDir = new File(objectsDir, firstTwoChar);
                                 File music = new File(musicDir, hash);
                                 File copiedVer = new File(musicStorageDir, musicActualName);
                                 Files.copy(music.toPath(), copiedVer.toPath(), StandardCopyOption.REPLACE_EXISTING);
                                 System.out.println("Copied to: " + copiedVer.getAbsolutePath());
                             }
                             else
                                 reader.skipValue();
                         }
                         reader.endObject();
                         System.out.println("---");
                     } else {
                         reader.skipValue();
                     }
                 }
                reader.endObject();
            }

            reader.endObject();
            reader.close();

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        long timeTaken = System.nanoTime() - time;
        System.out.println("Time taken: " + timeTaken + "ns");
    }

}