Reformat and clean up "server" package

src/main/java/server/ThreadManager.java

@@ -22,20 +22,19 @@ package server;
 import java.util.concurrent.*;
 
 /**
- *
  * @author Ronan
  */
 public class ThreadManager {
-    private static ThreadManager instance = new ThreadManager();
-    
+    private static final ThreadManager instance = new ThreadManager();
+
     public static ThreadManager getInstance() {
         return instance;
     }
-    
+
     private ThreadPoolExecutor tpe;
-    
+
     private ThreadManager() {}
-    
+
     private class RejectedExecutionHandlerImpl implements RejectedExecutionHandler {
 
         @Override
@@ -45,23 +44,24 @@ public class ThreadManager {
         }
 
     }
-    
+
     public void newTask(Runnable r) {
         tpe.execute(r);
     }
-    
+
     public void start() {
         RejectedExecutionHandler reh = new RejectedExecutionHandlerImpl();
         ThreadFactory tf = Executors.defaultThreadFactory();
-        
+
         tpe = new ThreadPoolExecutor(20, 1000, 77, TimeUnit.SECONDS, new ArrayBlockingQueue<>(50), tf, reh);
     }
-    
+
     public void stop() {
         tpe.shutdown();
         try {
             tpe.awaitTermination(5, TimeUnit.MINUTES);
-        } catch (InterruptedException ie) {}
+        } catch (InterruptedException ie) {
+        }
     }
-    
+
 }