editorconfig: max line length set

max line length warnings removed
missing Copyright added
useless publics removed
unmaintainable Javadoc tags: @author removed
helper class warnings removed
field default value initialization removed
Multiple warnings removed
pref: checkstyle warnings removed
Checkstyle will fail the build process if it detects violations
switch default cases error logger added

broker/src/main/java/io/moquette/spi/impl/Utils.java

@@ -1,3 +1,18 @@
+/*
+ * Copyright (c) 2012-2017 The original author or authors
+ * ------------------------------------------------------
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * and Apache License v2.0 which accompanies this distribution.
+ *
+ * The Eclipse Public License is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * The Apache License v2.0 is available at
+ * http://www.opensource.org/licenses/apache2.0.php
+ *
+ * You may elect to redistribute this code under either of these licenses.
+ */
 
 package io.moquette.spi.impl;
 
@@ -9,7 +24,7 @@ import java.util.Map;
 /**
  * Utility static methods, like Map get with default value, or elvis operator.
  */
-public class Utils {
+public final class Utils {
 
     public static <T, K> T defaultGet(Map<K, T> map, K key, T defaultValue) {
         T value = map.get(key);
@@ -30,4 +45,7 @@ public class Utils {
         payload.readerIndex(mark);
         return payloadContent;
     }
+
+    private Utils() {
+    }
 }