Add class so I have soemthing to call to get the UUID

src/me/libraryaddict/disguise/utilities/UUIDFetcher.java

@@ -0,0 +1,83 @@
+package me.libraryaddict.disguise.utilities;
+
+import com.google.common.collect.ImmutableList;
+import org.json.simple.JSONArray;
+import org.json.simple.JSONObject;
+import org.json.simple.JSONValue;
+import org.json.simple.parser.JSONParser;
+
+import java.io.DataOutputStream;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.UUID;
+import java.util.concurrent.Callable;
+
+public class UUIDFetcher implements Callable<HashMap<String, UUID>> {
+    private static final String AGENT = "minecraft";
+    private static final int MAX_SEARCH = 100;
+    private static final String PROFILE_URL = "https://api.mojang.com/profiles/page/";
+    @SuppressWarnings("unchecked")
+    private static String buildBody(List<String> names) {
+        List<JSONObject> lookups = new ArrayList<JSONObject>();
+        for (String name : names) {
+            JSONObject obj = new JSONObject();
+            obj.put("name", name);
+            obj.put("agent", AGENT);
+            lookups.add(obj);
+        }
+        return JSONValue.toJSONString(lookups);
+    }
+    private static HttpURLConnection createConnection(int page) throws Exception {
+        URL url = new URL(PROFILE_URL + page);
+        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+        connection.setRequestMethod("POST");
+        connection.setRequestProperty("Content-Type", "application/json");
+        connection.setUseCaches(false);
+        connection.setDoInput(true);
+        connection.setDoOutput(true);
+        return connection;
+    }
+
+    private static void writeBody(HttpURLConnection connection, String body) throws Exception {
+        DataOutputStream writer = new DataOutputStream(connection.getOutputStream());
+        writer.write(body.getBytes());
+        writer.flush();
+        writer.close();
+    }
+
+    private final JSONParser jsonParser = new JSONParser();
+
+    private final List<String> names;
+
+    public UUIDFetcher(List<String> names) {
+        this.names = ImmutableList.copyOf(names);
+    }
+
+    public HashMap<String, UUID> call() throws Exception {
+        HashMap<String, UUID> uuidMap = new HashMap<String, UUID>();
+        String body = buildBody(names);
+        for (int i = 1; i < MAX_SEARCH; i++) {
+            HttpURLConnection connection = createConnection(i);
+            writeBody(connection, body);
+            JSONObject jsonObject = (JSONObject) jsonParser.parse(new InputStreamReader(connection.getInputStream()));
+            JSONArray array = (JSONArray) jsonObject.get("profiles");
+            Number count = (Number) jsonObject.get("size");
+            if (count.intValue() == 0) {
+                break;
+            }
+            for (Object profile : array) {
+                JSONObject jsonProfile = (JSONObject) profile;
+                String id = (String) jsonProfile.get("id");
+                String name = (String) jsonProfile.get("name");
+                UUID uuid = UUID.fromString(id.substring(0, 8) + "-" + id.substring(8, 12) + "-" + id.substring(12, 16) + "-"
+                        + id.substring(16, 20) + "-" + id.substring(20, 32));
+                uuidMap.put(name, uuid);
+            }
+        }
+        return uuidMap;
+    }
+}