diff --git a/wicket/src/main/java/com/baeldung/wicket/examples/cafeaddress/CafeAddress.java b/wicket/src/main/java/com/baeldung/wicket/examples/cafeaddress/CafeAddress.java
index ce26c5a1ad..86820393c7 100644
--- a/wicket/src/main/java/com/baeldung/wicket/examples/cafeaddress/CafeAddress.java
+++ b/wicket/src/main/java/com/baeldung/wicket/examples/cafeaddress/CafeAddress.java
@@ -1,10 +1,5 @@
 package com.baeldung.wicket.examples.cafeaddress;
 
-import java.io.Serializable;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Map;
-
 import org.apache.wicket.ajax.AjaxRequestTarget;
 import org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior;
 import org.apache.wicket.markup.html.WebPage;
@@ -13,29 +8,29 @@ import org.apache.wicket.markup.html.form.DropDownChoice;
 import org.apache.wicket.model.PropertyModel;
 import org.apache.wicket.request.mapper.parameter.PageParameters;
 
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Map;
+
 public class CafeAddress extends WebPage {
-
-    private static final long serialVersionUID = 1L;
-
-    String selectedCafe;
-    Address address;
-    Map<String, Address> cafeNamesAndAddresses = new HashMap<>();
+    private String selectedCafe;
+    private Address address;
+    private Map<String, Address> cafeNamesAndAddresses = new HashMap<>();
 
     public CafeAddress(final PageParameters parameters) {
         super(parameters);
         initCafes();
 
-        ArrayList<String> cafeNames = new ArrayList<>(this.cafeNamesAndAddresses.keySet());
-        this.selectedCafe = cafeNames.get(0);
-        this.address = new Address(this.cafeNamesAndAddresses.get(this.selectedCafe).getAddress());
+        ArrayList<String> cafeNames = new ArrayList<>(cafeNamesAndAddresses.keySet());
+        selectedCafe = cafeNames.get(0);
+        address = new Address(cafeNamesAndAddresses.get(selectedCafe).getAddress());
 
         final Label addressLabel = new Label("address", new PropertyModel<String>(this.address, "address"));
         addressLabel.setOutputMarkupId(true);
 
-        final DropDownChoice<String> cafeDropdown = new DropDownChoice<>("cafes", new PropertyModel<String>(this, "selectedCafe"), cafeNames);
+        final DropDownChoice<String> cafeDropdown = new DropDownChoice<>("cafes", new PropertyModel<>(this, "selectedCafe"), cafeNames);
         cafeDropdown.add(new AjaxFormComponentUpdatingBehavior("onchange") {
-            private static final long serialVersionUID = 1L;
-
             @Override
             protected void onUpdate(AjaxRequestTarget target) {
                 String name = (String) cafeDropdown.getDefaultModel().getObject();
@@ -61,11 +56,11 @@ public class CafeAddress extends WebPage {
             this.sAddress = address;
         }
 
-        public String getAddress() {
+        String getAddress() {
             return this.sAddress;
         }
 
-        public void setAddress(String address) {
+        void setAddress(String address) {
             this.sAddress = address;
         }
     }
diff --git a/wicket/src/main/java/com/baeldung/wicket/examples/helloworld/HelloWorld.java b/wicket/src/main/java/com/baeldung/wicket/examples/helloworld/HelloWorld.java
index f819e05be6..6dc7295798 100644
--- a/wicket/src/main/java/com/baeldung/wicket/examples/helloworld/HelloWorld.java
+++ b/wicket/src/main/java/com/baeldung/wicket/examples/helloworld/HelloWorld.java
@@ -4,9 +4,6 @@ import org.apache.wicket.markup.html.WebPage;
 import org.apache.wicket.markup.html.basic.Label;
 
 public class HelloWorld extends WebPage {
-
-    private static final long serialVersionUID = 1L;
-
     public HelloWorld() {
         add(new Label("hello", "Hello World!"));
     }