fixed minor code issues (jooby-project#1165)

feffi · jknack · commit 6d583aa88a26 · 2018-06-25T12:43:52.000-03:00
diff --git a/modules/jooby-gson/src/main/java/org/jooby/json/GsonParser.java b/modules/jooby-gson/src/main/java/org/jooby/json/GsonParser.java
@@ -213,9 +213,9 @@
 
 class GsonParser implements Parser {
 
-  private MediaType type;
+  private final MediaType type;
 
-  private Gson gson;
+  private final Gson gson;
 
   public GsonParser(final MediaType type, final Gson gson) {
     this.type = requireNonNull(type, "Media type is required.");
diff --git a/modules/jooby-gson/src/main/java/org/jooby/json/GsonRenderer.java b/modules/jooby-gson/src/main/java/org/jooby/json/GsonRenderer.java
@@ -212,9 +212,9 @@
 
 class GsonRenderer implements Renderer {
 
-  private MediaType type;
+  private final MediaType type;
 
-  private Gson gson;
+  private final Gson gson;
 
   public GsonRenderer(final MediaType type, final Gson gson) {
     this.type = requireNonNull(type, "Media type is required.");
diff --git a/modules/jooby-gson/src/main/java/org/jooby/json/Gzon.java b/modules/jooby-gson/src/main/java/org/jooby/json/Gzon.java
@@ -274,7 +274,7 @@
  */
 public class Gzon implements Jooby.Module {
 
-  private MediaType type;
+  private final MediaType type;
 
   private BiConsumer<GsonBuilder, Config> configurer;
 
