diff --git a/flux/src/main/java/com/iluwatar/flux/dispatcher/Dispatcher.java b/flux/src/main/java/com/iluwatar/flux/dispatcher/Dispatcher.java
index 4ab01b9fc..10f064efa 100644
--- a/flux/src/main/java/com/iluwatar/flux/dispatcher/Dispatcher.java
+++ b/flux/src/main/java/com/iluwatar/flux/dispatcher/Dispatcher.java
@@ -71,6 +71,6 @@ public final class Dispatcher {
   }
 
   private void dispatchAction(Action action) {
-    stores.stream().forEach((store) -> store.onAction(action));
+    stores.stream().forEach(store -> store.onAction(action));
   }
 }
diff --git a/flux/src/main/java/com/iluwatar/flux/store/Store.java b/flux/src/main/java/com/iluwatar/flux/store/Store.java
index b3bc56b6f..f7cc2ccbf 100644
--- a/flux/src/main/java/com/iluwatar/flux/store/Store.java
+++ b/flux/src/main/java/com/iluwatar/flux/store/Store.java
@@ -44,6 +44,6 @@ public abstract class Store {
   }
 
   protected void notifyChange() {
-    views.stream().forEach((view) -> view.storeChanged(this));
+    views.stream().forEach(view -> view.storeChanged(this));
   }
 }
diff --git a/half-sync-half-async/src/main/java/com/iluwatar/halfsynchalfasync/App.java b/half-sync-half-async/src/main/java/com/iluwatar/halfsynchalfasync/App.java
index 3c25be414..17839bb32 100644
--- a/half-sync-half-async/src/main/java/com/iluwatar/halfsynchalfasync/App.java
+++ b/half-sync-half-async/src/main/java/com/iluwatar/halfsynchalfasync/App.java
@@ -143,6 +143,6 @@ public class App {
     } catch (InterruptedException e) {
       System.out.println(e);
     }
-    return (i) * (i + 1) / 2;
+    return i * (i + 1) / 2;
   }
 }
diff --git a/layers/src/main/java/com/iluwatar/layers/CakeBakingServiceImpl.java b/layers/src/main/java/com/iluwatar/layers/CakeBakingServiceImpl.java
index dd62fa632..e8518b625 100644
--- a/layers/src/main/java/com/iluwatar/layers/CakeBakingServiceImpl.java
+++ b/layers/src/main/java/com/iluwatar/layers/CakeBakingServiceImpl.java
@@ -54,7 +54,7 @@ public class CakeBakingServiceImpl implements CakeBakingService {
   public void bakeNewCake(CakeInfo cakeInfo) throws CakeBakingException {
     List<CakeTopping> allToppings = getAvailableToppingEntities();
     List<CakeTopping> matchingToppings =
-        allToppings.stream().filter((t) -> t.getName().equals(cakeInfo.cakeToppingInfo.name))
+        allToppings.stream().filter(t -> t.getName().equals(cakeInfo.cakeToppingInfo.name))
             .collect(Collectors.toList());
     if (matchingToppings.isEmpty()) {
       throw new CakeBakingException(String.format("Topping %s is not available",
@@ -64,7 +64,7 @@ public class CakeBakingServiceImpl implements CakeBakingService {
     Set<CakeLayer> foundLayers = new HashSet<>();
     for (CakeLayerInfo info : cakeInfo.cakeLayerInfos) {
       Optional<CakeLayer> found =
-          allLayers.stream().filter((layer) -> layer.getName().equals(info.name)).findFirst();
+          allLayers.stream().filter(layer -> layer.getName().equals(info.name)).findFirst();
       if (!found.isPresent()) {
         throw new CakeBakingException(String.format("Layer %s is not available", info.name));
       } else {
diff --git a/layers/src/main/java/com/iluwatar/layers/CakeViewImpl.java b/layers/src/main/java/com/iluwatar/layers/CakeViewImpl.java
index 18ab34e7f..bc489e16e 100644
--- a/layers/src/main/java/com/iluwatar/layers/CakeViewImpl.java
+++ b/layers/src/main/java/com/iluwatar/layers/CakeViewImpl.java
@@ -36,6 +36,6 @@ public class CakeViewImpl implements View {
   }
 
   public void render() {
-    cakeBakingService.getAllCakes().stream().forEach((cake) -> System.out.println(cake));
+    cakeBakingService.getAllCakes().stream().forEach(cake -> System.out.println(cake));
   }
 }
diff --git a/message-channel/src/main/java/com/iluwatar/message/channel/App.java b/message-channel/src/main/java/com/iluwatar/message/channel/App.java
index 4e5ef11cf..dab04bd37 100644
--- a/message-channel/src/main/java/com/iluwatar/message/channel/App.java
+++ b/message-channel/src/main/java/com/iluwatar/message/channel/App.java
@@ -66,7 +66,7 @@ public class App {
     });
 
     context.start();
-    context.getRoutes().stream().forEach((r) -> System.out.println(r));
+    context.getRoutes().stream().forEach(r -> System.out.println(r));
     context.stop();
   }
 }
diff --git a/publish-subscribe/src/main/java/com/iluwatar/publish/subscribe/App.java b/publish-subscribe/src/main/java/com/iluwatar/publish/subscribe/App.java
index b3eeaeb8e..c4e423b04 100644
--- a/publish-subscribe/src/main/java/com/iluwatar/publish/subscribe/App.java
+++ b/publish-subscribe/src/main/java/com/iluwatar/publish/subscribe/App.java
@@ -61,7 +61,7 @@ public class App {
     });
     ProducerTemplate template = context.createProducerTemplate();
     context.start();
-    context.getRoutes().stream().forEach((r) -> System.out.println(r));
+    context.getRoutes().stream().forEach(r -> System.out.println(r));
     template.sendBody("direct:origin", "Hello from origin");
     context.stop();
   }
diff --git a/reactor/src/main/java/com/iluwatar/reactor/app/LoggingHandler.java b/reactor/src/main/java/com/iluwatar/reactor/app/LoggingHandler.java
index 88716728c..e2b02e445 100644
--- a/reactor/src/main/java/com/iluwatar/reactor/app/LoggingHandler.java
+++ b/reactor/src/main/java/com/iluwatar/reactor/app/LoggingHandler.java
@@ -47,7 +47,7 @@ public class LoggingHandler implements ChannelHandler {
      * received is a ByteBuffer (from TCP channel) or a DatagramPacket (from UDP channel).
      */
     if (readObject instanceof ByteBuffer) {
-      doLogging(((ByteBuffer) readObject));
+      doLogging((ByteBuffer) readObject);
       sendReply(channel, key);
     } else if (readObject instanceof DatagramPacket) {
       DatagramPacket datagram = (DatagramPacket) readObject;
diff --git a/repository/src/main/java/com/iluwatar/repository/Person.java b/repository/src/main/java/com/iluwatar/repository/Person.java
index a29a7fd43..b1559cf00 100644
--- a/repository/src/main/java/com/iluwatar/repository/Person.java
+++ b/repository/src/main/java/com/iluwatar/repository/Person.java
@@ -97,9 +97,9 @@ public class Person {
     final int prime = 31;
     int result = 1;
     result = prime * result + age;
-    result = prime * result + ((id == null) ? 0 : id.hashCode());
-    result = prime * result + ((name == null) ? 0 : name.hashCode());
-    result = prime * result + ((surname == null) ? 0 : surname.hashCode());
+    result = prime * result + (id == null ? 0 : id.hashCode());
+    result = prime * result + (name == null ? 0 : name.hashCode());
+    result = prime * result + (surname == null ? 0 : surname.hashCode());
     return result;
   }
 
diff --git a/step-builder/src/main/java/com/iluwatar/stepbuilder/Character.java b/step-builder/src/main/java/com/iluwatar/stepbuilder/Character.java
index 092993f5c..1e21758a3 100644
--- a/step-builder/src/main/java/com/iluwatar/stepbuilder/Character.java
+++ b/step-builder/src/main/java/com/iluwatar/stepbuilder/Character.java
@@ -97,7 +97,7 @@ public class Character {
             .append(name)
             .append(" armed with a ")
             .append(weapon != null ? weapon : spell != null ? spell : "with nothing")
-            .append(abilities != null ? (" and wielding " + abilities + " abilities") : "")
+            .append(abilities != null ? " and wielding " + abilities + " abilities" : "")
             .append('.');
     return sb.toString();
   }