fix json print

frameworks/Java/beyondj/beyondj-data/src/main/java/com/techempower/beyondj/Message.java

@@ -1,7 +1,8 @@
 package com.techempower.beyondj;
 
 public class Message {
-    private final String message;
+
+    private String message;
 
     public Message(String message) {
         this.message = message;

frameworks/Java/beyondj/beyondj-data/src/main/java/com/techempower/beyondj/domain/Fortune.java

@@ -9,7 +9,7 @@ import javax.persistence.GeneratedValue;
 import javax.persistence.Id;
 
 @Entity
-public final class Fortune implements Comparable<Fortune>, Persistable<Integer> {
+public class Fortune implements Comparable<Fortune>, Persistable<Integer> {
 
     @Id
     @GeneratedValue

frameworks/Java/beyondj/beyondj-data/src/main/java/com/techempower/beyondj/domain/World.java

@@ -9,7 +9,7 @@ import javax.persistence.GeneratedValue;
 import javax.persistence.Id;
 
 @Entity
-public final class World implements Persistable<Integer> {
+public class World implements Persistable<Integer> {
 
     @Id
     @GeneratedValue

frameworks/Java/beyondj/beyondj-service/src/main/java/com/techempower/beyondj/action/HelloActionBean.java

@@ -21,11 +21,6 @@ public class HelloActionBean extends BaseActionBean {
         Message message = new Message(HELLO_WORLD);
 
         Gson gson = new GsonBuilder()
-                .enableComplexMapKeySerialization()
-                .serializeNulls()
-                .setPrettyPrinting()
-                .setVersion(1.0)
-                .excludeFieldsWithoutExposeAnnotation()
                 .create();
 
         String rawJsonText = gson.toJson(message);