diff --git a/model-view-presenter/src/main/java/com/iluwatar/model/view/presenter/FileLoader.java b/model-view-presenter/src/main/java/com/iluwatar/model/view/presenter/FileLoader.java
index f5606e638fa0..5952cf5f17bd 100644
--- a/model-view-presenter/src/main/java/com/iluwatar/model/view/presenter/FileLoader.java
+++ b/model-view-presenter/src/main/java/com/iluwatar/model/view/presenter/FileLoader.java
@@ -36,7 +36,7 @@
  * <p>
  * It is responsible for reading and loading the contents of a given file.
  */
-public class FileLoader implements Serializable{
+public class FileLoader implements Serializable {
 
   /**
    * Generated serial version UID
diff --git a/model-view-presenter/src/main/java/com/iluwatar/model/view/presenter/FileSelectorPresenter.java b/model-view-presenter/src/main/java/com/iluwatar/model/view/presenter/FileSelectorPresenter.java
index 560a8d274965..233b1dcf73c5 100644
--- a/model-view-presenter/src/main/java/com/iluwatar/model/view/presenter/FileSelectorPresenter.java
+++ b/model-view-presenter/src/main/java/com/iluwatar/model/view/presenter/FileSelectorPresenter.java
@@ -30,7 +30,7 @@
  * <p>
  * It is responsible for reacting to the user's actions and update the View component.
  */
-public class FileSelectorPresenter implements Serializable{
+public class FileSelectorPresenter implements Serializable {
 
   /**
    * Generated serial version UID
diff --git a/model-view-presenter/src/main/java/com/iluwatar/model/view/presenter/FileSelectorView.java b/model-view-presenter/src/main/java/com/iluwatar/model/view/presenter/FileSelectorView.java
index 5272ea0b77ff..e6ab93f66bed 100644
--- a/model-view-presenter/src/main/java/com/iluwatar/model/view/presenter/FileSelectorView.java
+++ b/model-view-presenter/src/main/java/com/iluwatar/model/view/presenter/FileSelectorView.java
@@ -28,7 +28,7 @@
  * This interface represents the View component in the Model-View-Presenter pattern. It can be
  * implemented by either the GUI components, or by the Stub.
  */
-public interface FileSelectorView extends Serializable{
+public interface FileSelectorView extends Serializable {
 
   /**
    * Opens the view.
diff --git a/mutex/src/test/java/com/iluwatar/mutex/AppTest.java b/mutex/src/test/java/com/iluwatar/mutex/AppTest.java
index f224a56f55a3..530db835d966 100644
--- a/mutex/src/test/java/com/iluwatar/mutex/AppTest.java
+++ b/mutex/src/test/java/com/iluwatar/mutex/AppTest.java
@@ -28,7 +28,7 @@
 /**
  * Application Test Entrypoint
  */
-public class AppTest{
+public class AppTest {
   @Test
   public void test() throws IOException {
     String[] args = {};
diff --git a/semaphore/src/test/java/com/iluwatar/semaphore/AppTest.java b/semaphore/src/test/java/com/iluwatar/semaphore/AppTest.java
index 26d274262a7a..5eaed3b2eda6 100644
--- a/semaphore/src/test/java/com/iluwatar/semaphore/AppTest.java
+++ b/semaphore/src/test/java/com/iluwatar/semaphore/AppTest.java
@@ -28,7 +28,7 @@
 /**
  * Application Test Entrypoint
  */
-public class AppTest{
+public class AppTest {
   @Test
   public void test() throws IOException {
     String[] args = {};
diff --git a/throttling/src/main/java/com/iluwatar/throttling/timer/ThrottleTimerImpl.java b/throttling/src/main/java/com/iluwatar/throttling/timer/ThrottleTimerImpl.java
index 51c5e3c281a5..4ff4ce2469e7 100644
--- a/throttling/src/main/java/com/iluwatar/throttling/timer/ThrottleTimerImpl.java
+++ b/throttling/src/main/java/com/iluwatar/throttling/timer/ThrottleTimerImpl.java
@@ -35,7 +35,7 @@
  * @author drastogi
  *
  */
-public class ThrottleTimerImpl implements Throttler{
+public class ThrottleTimerImpl implements Throttler {
 
   private int throttlePeriod;