4 files changed, 6 insertions, 2 deletions
diff --git a/vaadin-app/src/ch/asynk/helloworld/DataMappingLayout.java b/vaadin-app/src/ch/asynk/helloworld/DataMappingLayout.java
index 3748bee..301d1aa 100644
--- a/vaadin-app/src/ch/asynk/helloworld/DataMappingLayout.java
+++ b/vaadin-app/src/ch/asynk/helloworld/DataMappingLayout.java
@@ -14,6 +14,8 @@ import com.vaadin.ui.TextField;
 
 public class DataMappingLayout extends FormLayout {
 
+    private static final long serialVersionUID = 1L;
+
     public DataMappingLayout() {
         //
         final TextField tf1 = new TextField("Property.ValueChangeListener");
diff --git a/vaadin-app/src/ch/asynk/helloworld/EndLayout.java b/vaadin-app/src/ch/asynk/helloworld/EndLayout.java
index a88de35..d8375be 100644
--- a/vaadin-app/src/ch/asynk/helloworld/EndLayout.java
+++ b/vaadin-app/src/ch/asynk/helloworld/EndLayout.java
@@ -7,6 +7,8 @@ import com.vaadin.ui.Button.ClickEvent;
 
 public class EndLayout extends VerticalLayout {
 
+    private static final long serialVersionUID = 1L;
+
     public EndLayout() {
         //
         final Label lb1 = new Label();
diff --git a/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java b/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java
index 2521ac6..be5ab08 100644
--- a/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java
+++ b/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java
@@ -1,7 +1,5 @@
 package ch.asynk.helloworld;
 
-import java.util.Date;
-
 import com.vaadin.Application;
 import com.vaadin.terminal.Terminal;
 import com.vaadin.terminal.UserError;
diff --git a/vaadin-app/src/ch/asynk/helloworld/MainLayout.java b/vaadin-app/src/ch/asynk/helloworld/MainLayout.java
index e5e364e..0aaea6c 100644
--- a/vaadin-app/src/ch/asynk/helloworld/MainLayout.java
+++ b/vaadin-app/src/ch/asynk/helloworld/MainLayout.java
@@ -12,6 +12,8 @@ import com.vaadin.ui.Window.Notification;
 
 public class MainLayout extends VerticalLayout {
 
+    private static final long serialVersionUID = 1L;
+
     public MainLayout() {
         Label label = new Label("Hello world");
         addComponent(label);