diff --git a/apache-libraries-2/pom.xml b/apache-libraries-2/pom.xml
index 618ff4a188..d188204208 100644
--- a/apache-libraries-2/pom.xml
+++ b/apache-libraries-2/pom.xml
@@ -21,7 +21,6 @@
         </dependency>
     </dependencies>
 
-
     <properties>
         <javax.validation.validation-api.version>2.0.1.Final</javax.validation.validation-api.version>
     </properties>
diff --git a/aws-modules/aws-s3-update-object/pom.xml b/aws-modules/aws-s3-update-object/pom.xml
index 574a63977b..3cf7b657b0 100644
--- a/aws-modules/aws-s3-update-object/pom.xml
+++ b/aws-modules/aws-s3-update-object/pom.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>aws-s3-update-object</artifactId>
     <version>0.0.1-SNAPSHOT</version>
diff --git a/aws-modules/aws-s3/pom.xml b/aws-modules/aws-s3/pom.xml
index 157aeb671d..e2bc04964a 100644
--- a/aws-modules/aws-s3/pom.xml
+++ b/aws-modules/aws-s3/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>aws-s3</artifactId>
     <version>0.1.0-SNAPSHOT</version>
diff --git a/core-java-modules/core-java-collections-list-5/pom.xml b/core-java-modules/core-java-collections-list-5/pom.xml
index bcdb6824ed..2b4b0041b3 100644
--- a/core-java-modules/core-java-collections-list-5/pom.xml
+++ b/core-java-modules/core-java-collections-list-5/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>core-java-collections-list-5</artifactId>
     <name>core-java-collections-list-5</name>
diff --git a/core-java-modules/core-java-conditionals/pom.xml b/core-java-modules/core-java-conditionals/pom.xml
index 7cec575f61..811f183e99 100644
--- a/core-java-modules/core-java-conditionals/pom.xml
+++ b/core-java-modules/core-java-conditionals/pom.xml
@@ -37,14 +37,14 @@
                     <compilerArgs>--enable-preview</compilerArgs>
                 </configuration>
             </plugin>
-                <plugin>
-                    <groupId>org.apache.maven.plugins</groupId>
-                    <artifactId>maven-surefire-plugin</artifactId>
-                    <version>${surefire.plugin.version}</version>
-                    <configuration>
-                        <argLine>--enable-preview</argLine>
-                    </configuration>
-                </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>${surefire.plugin.version}</version>
+                <configuration>
+                    <argLine>--enable-preview</argLine>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
 
diff --git a/core-java-modules/core-java-date-operations-3/pom.xml b/core-java-modules/core-java-date-operations-3/pom.xml
index 19760ca357..9b7be18b85 100644
--- a/core-java-modules/core-java-date-operations-3/pom.xml
+++ b/core-java-modules/core-java-date-operations-3/pom.xml
@@ -12,7 +12,7 @@
         <artifactId>core-java-modules</artifactId>
         <version>0.0.1-SNAPSHOT</version>
     </parent>
-    
+
     <dependencies>
         <dependency>
             <groupId>joda-time</groupId>
@@ -25,7 +25,7 @@
             <version>${commons-lang3.version}</version>
         </dependency>
     </dependencies>
-    
+
     <properties>
         <joda-time.version>2.12.5</joda-time.version>
         <commons-lang3.version>3.12.0</commons-lang3.version>
diff --git a/core-java-modules/core-java-lang-6/pom.xml b/core-java-modules/core-java-lang-6/pom.xml
index 86121e0a7f..53ef36a898 100644
--- a/core-java-modules/core-java-lang-6/pom.xml
+++ b/core-java-modules/core-java-lang-6/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xmlns="http://maven.apache.org/POM/4.0.0"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xmlns="http://maven.apache.org/POM/4.0.0"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>com.baeldung.core-java-modules</groupId>
diff --git a/core-java-modules/core-java-scanner/pom.xml b/core-java-modules/core-java-scanner/pom.xml
index f149f51955..bb5c7dca78 100644
--- a/core-java-modules/core-java-scanner/pom.xml
+++ b/core-java-modules/core-java-scanner/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xmlns="http://maven.apache.org/POM/4.0.0"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xmlns="http://maven.apache.org/POM/4.0.0"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>core-java-scanner</artifactId>
     <name>core-java-scanner</name>
diff --git a/core-java-modules/core-java-string-operations-6/pom.xml b/core-java-modules/core-java-string-operations-6/pom.xml
index 0ec32d91b1..ca9a7a9297 100644
--- a/core-java-modules/core-java-string-operations-6/pom.xml
+++ b/core-java-modules/core-java-string-operations-6/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>core-java-string-operations-6</artifactId>
     <name>core-java-string-operations-6</name>