diff --git a/annotations/pom.xml b/annotations/pom.xml
index f691674cf1..0ddc17f8a7 100644
--- a/annotations/pom.xml
+++ b/annotations/pom.xml
@@ -1,7 +1,6 @@
 <?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">
+<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">
     <parent>
         <artifactId>parent-modules</artifactId>
         <groupId>com.baeldung</groupId>
diff --git a/apache-cxf/pom.xml b/apache-cxf/pom.xml
index e2cd7d344a..6849452908 100644
--- a/apache-cxf/pom.xml
+++ b/apache-cxf/pom.xml
@@ -5,20 +5,20 @@
     <artifactId>apache-cxf</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>pom</packaging>
-    
+
     <modules>
         <module>cxf-introduction</module>
         <module>cxf-spring</module>
         <module>cxf-jaxrs-implementation</module>
         <module>cxf-aegis</module>
     </modules>
-    
+
     <properties>
         <junit.version>4.12</junit.version>
         <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
         <exec-maven-plugin.version>1.5.0</exec-maven-plugin.version>
     </properties>
-    
+
     <dependencies>
         <dependency>
             <groupId>junit</groupId>
@@ -27,7 +27,7 @@
             <scope>test</scope>
         </dependency>
     </dependencies>
-    
+
     <build>
         <defaultGoal>install</defaultGoal>
         <pluginManagement>
diff --git a/apache-fop/pom.xml b/apache-fop/pom.xml
index 4dd61d8f4e..6f89497a7d 100644
--- a/apache-fop/pom.xml
+++ b/apache-fop/pom.xml
@@ -1,154 +1,155 @@
-<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">
-	<modelVersion>4.0.0</modelVersion>
-	<groupId>com.baeldung</groupId>
-	<artifactId>apache-fop</artifactId>
-	<version>0.1-SNAPSHOT</version>
+<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">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.baeldung</groupId>
+    <artifactId>apache-fop</artifactId>
+    <version>0.1-SNAPSHOT</version>
 
-	<name>apache-fop</name>
+    <name>apache-fop</name>
 
-	<dependencies>
+    <dependencies>
 
-		<!-- logging -->
+        <!-- logging -->
 
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>slf4j-api</artifactId>
-			<version>${org.slf4j.version}</version>
-		</dependency>
-		<dependency>
-			<groupId>ch.qos.logback</groupId>
-			<artifactId>logback-classic</artifactId>
-			<version>${logback.version}</version>
-			<!-- <scope>runtime</scope> -->
-		</dependency>
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>jcl-over-slf4j</artifactId>
-			<version>${org.slf4j.version}</version>
-    <!-- <scope>runtime</scope> --> <!-- some spring dependencies need to compile against jcl -->
-		</dependency>
-		<dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
-			<groupId>org.slf4j</groupId>
-			<artifactId>log4j-over-slf4j</artifactId>
-			<version>${org.slf4j.version}</version>
-		</dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+            <version>${org.slf4j.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <version>${logback.version}</version>
+            <!-- <scope>runtime</scope> -->
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>jcl-over-slf4j</artifactId>
+            <version>${org.slf4j.version}</version>
+            <!-- <scope>runtime</scope> --> <!-- some spring dependencies need to compile against jcl -->
+        </dependency>
+        <dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
+            <groupId>org.slf4j</groupId>
+            <artifactId>log4j-over-slf4j</artifactId>
+            <version>${org.slf4j.version}</version>
+        </dependency>
 
-		<!-- test scoped -->
+        <!-- test scoped -->
 
-		<dependency>
-			<groupId>junit</groupId>
-			<artifactId>junit</artifactId>
-			<version>${junit.version}</version>
-			<scope>test</scope>
-		</dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>${junit.version}</version>
+            <scope>test</scope>
+        </dependency>
 
-		<dependency>
-			<groupId>org.hamcrest</groupId>
-			<artifactId>hamcrest-core</artifactId>
-			<version>${org.hamcrest.version}</version>
-			<scope>test</scope>
-		</dependency>
-		<dependency>
-			<groupId>org.hamcrest</groupId>
-			<artifactId>hamcrest-library</artifactId>
-			<version>${org.hamcrest.version}</version>
-			<scope>test</scope>
-		</dependency>
+        <dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>hamcrest-core</artifactId>
+            <version>${org.hamcrest.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>hamcrest-library</artifactId>
+            <version>${org.hamcrest.version}</version>
+            <scope>test</scope>
+        </dependency>
 
-		<dependency>
-			<groupId>org.mockito</groupId>
-			<artifactId>mockito-core</artifactId>
-			<version>${mockito.version}</version>
-			<scope>test</scope>
-		</dependency>
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>${mockito.version}</version>
+            <scope>test</scope>
+        </dependency>
 
-		<!-- new dependencies -->
+        <!-- new dependencies -->
 
-		<dependency>
-			<groupId>org.apache.xmlgraphics</groupId>
-			<artifactId>fop</artifactId>
-			<version>${fop.version}</version>
-			<exclusions>
-				<exclusion>
-					<groupId>org.apache.avalon.framework</groupId>
-					<artifactId>avalon-framework-api</artifactId>
-				</exclusion>
-				<exclusion>
-					<groupId>org.apache.avalon.framework</groupId>
-					<artifactId>avalon-framework-impl</artifactId>
-				</exclusion>
-			</exclusions>
-		</dependency>
+        <dependency>
+            <groupId>org.apache.xmlgraphics</groupId>
+            <artifactId>fop</artifactId>
+            <version>${fop.version}</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.apache.avalon.framework</groupId>
+                    <artifactId>avalon-framework-api</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>org.apache.avalon.framework</groupId>
+                    <artifactId>avalon-framework-impl</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
 
-		<dependency>
-			<groupId>avalon-framework</groupId>
-			<artifactId>avalon-framework-api</artifactId>
-			<version>${avalon-framework.version}</version>
-		</dependency>
-		<dependency>
-			<groupId>avalon-framework</groupId>
-			<artifactId>avalon-framework-impl</artifactId>
-			<version>${avalon-framework.version}</version>
-		</dependency>
+        <dependency>
+            <groupId>avalon-framework</groupId>
+            <artifactId>avalon-framework-api</artifactId>
+            <version>${avalon-framework.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>avalon-framework</groupId>
+            <artifactId>avalon-framework-impl</artifactId>
+            <version>${avalon-framework.version}</version>
+        </dependency>
 
-		<dependency>
-			<groupId>org.dbdoclet</groupId>
-			<artifactId>dbdoclet</artifactId>
-			<version>${dbdoclet.version}</version>
-		</dependency>
+        <dependency>
+            <groupId>org.dbdoclet</groupId>
+            <artifactId>dbdoclet</artifactId>
+            <version>${dbdoclet.version}</version>
+        </dependency>
 
-		<dependency>
-		  <groupId>org.dbdoclet</groupId>
-		  <artifactId>herold</artifactId>
-		  <version>6.1.0</version>
-		  <scope>system</scope>
-		  <systemPath>${basedir}/src/test/resources/jars/herold.jar</systemPath>
-		</dependency>
-		
-		<dependency>
-			<groupId>net.sf.jtidy</groupId>
-			<artifactId>jtidy</artifactId>
-			<version>${jtidy.version}</version>
-		</dependency>
+        <dependency>
+            <groupId>org.dbdoclet</groupId>
+            <artifactId>herold</artifactId>
+            <version>6.1.0</version>
+            <scope>system</scope>
+            <systemPath>${basedir}/src/test/resources/jars/herold.jar</systemPath>
+        </dependency>
 
-	</dependencies>
+        <dependency>
+            <groupId>net.sf.jtidy</groupId>
+            <artifactId>jtidy</artifactId>
+            <version>${jtidy.version}</version>
+        </dependency>
 
-	<build>
-		<finalName>apache-fop</finalName>
-		<resources>
-			<resource>
-				<directory>src/main/resources</directory>
-				<filtering>true</filtering>
-			</resource>
-		</resources>
+    </dependencies>
 
-		<plugins>
+    <build>
+        <finalName>apache-fop</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
 
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-compiler-plugin</artifactId>
-				<version>${maven-compiler-plugin.version}</version>
-				<configuration>
-					<source>1.7</source>
-					<target>1.7</target>
-				</configuration>
-			</plugin>
+        <plugins>
 
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-surefire-plugin</artifactId>
-				<version>${maven-surefire-plugin.version}</version>
-				<configuration>
-					<excludes>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>${maven-compiler-plugin.version}</version>
+                <configuration>
+                    <source>1.7</source>
+                    <target>1.7</target>
+                </configuration>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>${maven-surefire-plugin.version}</version>
+                <configuration>
+                    <excludes>
                         <exclude>**/*IntegrationTest.java</exclude>
                         <exclude>**/*LiveTest.java</exclude>
-					</excludes>
-				</configuration>
-			</plugin>
+                    </excludes>
+                </configuration>
+            </plugin>
 
-		</plugins>
+        </plugins>
 
-	</build>
+    </build>
 
     <profiles>
         <profile>
@@ -170,7 +171,7 @@
                                     </excludes>
                                     <includes>
                                         <include>**/*IntegrationTest.java</include>
-                                        <exclude>**/*LiveTest.java</exclude>                                        
+                                        <exclude>**/*LiveTest.java</exclude>
                                     </includes>
                                 </configuration>
                             </execution>
@@ -185,25 +186,25 @@
             </build>
         </profile>
     </profiles>
-    
-	<properties>
-	    <fop.version>1.1</fop.version> 
-	    <avalon-framework.version>4.3</avalon-framework.version>
-	    <dbdoclet.version>8.0.2</dbdoclet.version>
-	    <jtidy.version>r938</jtidy.version>
-		<!-- logging -->
-		<org.slf4j.version>1.7.21</org.slf4j.version>
-		<logback.version>1.1.7</logback.version>
 
-		<!-- testing -->
-		<org.hamcrest.version>1.3</org.hamcrest.version>
-		<junit.version>4.12</junit.version>
-		<mockito.version>1.10.19</mockito.version>
+    <properties>
+        <fop.version>1.1</fop.version>
+        <avalon-framework.version>4.3</avalon-framework.version>
+        <dbdoclet.version>8.0.2</dbdoclet.version>
+        <jtidy.version>r938</jtidy.version>
+        <!-- logging -->
+        <org.slf4j.version>1.7.21</org.slf4j.version>
+        <logback.version>1.1.7</logback.version>
 
-		<!-- maven plugins -->
-		<maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
-		<maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
+        <!-- testing -->
+        <org.hamcrest.version>1.3</org.hamcrest.version>
+        <junit.version>4.12</junit.version>
+        <mockito.version>1.10.19</mockito.version>
 
-	</properties>
+        <!-- maven plugins -->
+        <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
+        <maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
+
+    </properties>
 
 </project>
\ No newline at end of file
diff --git a/aspectj/pom.xml b/aspectj/pom.xml
index 6e7ef1b961..90b527c14f 100644
--- a/aspectj/pom.xml
+++ b/aspectj/pom.xml
@@ -12,32 +12,32 @@
             <artifactId>aspectjrt</artifactId>
             <version>${aspectj.version}</version>
         </dependency>
-        
+
         <dependency>
             <groupId>org.aspectj</groupId>
             <artifactId>aspectjweaver</artifactId>
             <version>${aspectj.version}</version>
         </dependency>
-    
+
         <!-- utils -->
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>
             <version>${org.slf4j.version}</version>
         </dependency>
-        
+
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
             <version>${logback.version}</version>
         </dependency>
-        
+
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-core</artifactId>
             <version>${logback.version}</version>
         </dependency>
-        
+
         <!-- unit test -->
         <dependency>
             <groupId>junit</groupId>
@@ -46,34 +46,34 @@
         </dependency>
 
         <dependency>
-        	<groupId>org.springframework</groupId>
-        	<artifactId>spring-context</artifactId>
-        	<version>4.3.4.RELEASE</version>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>4.3.4.RELEASE</version>
         </dependency>
         <dependency>
-        	<groupId>org.springframework</groupId>
-        	<artifactId>spring-beans</artifactId>
-        	<version>4.3.4.RELEASE</version>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-beans</artifactId>
+            <version>4.3.4.RELEASE</version>
         </dependency>
         <dependency>
-        	<groupId>org.springframework</groupId>
-        	<artifactId>spring-core</artifactId>
-        	<version>4.3.4.RELEASE</version>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-core</artifactId>
+            <version>4.3.4.RELEASE</version>
         </dependency>
         <dependency>
-        	<groupId>cglib</groupId>
-        	<artifactId>cglib</artifactId>
-        	<version>3.2.4</version>
+            <groupId>cglib</groupId>
+            <artifactId>cglib</artifactId>
+            <version>3.2.4</version>
         </dependency>
         <dependency>
-        	<groupId>org.springframework</groupId>
-        	<artifactId>spring-aop</artifactId>
-        	<version>4.3.4.RELEASE</version>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-aop</artifactId>
+            <version>4.3.4.RELEASE</version>
         </dependency>
         <dependency>
-        	<groupId>log4j</groupId>
-        	<artifactId>log4j</artifactId>
-        	<version>1.2.17</version>
+            <groupId>log4j</groupId>
+            <artifactId>log4j</artifactId>
+            <version>1.2.17</version>
         </dependency>
     </dependencies>
 
@@ -95,9 +95,9 @@
                     <source>${source.version}</source>
                     <target>${source.version}</target>
                 </configuration>
-              
+
             </plugin>
-            
+
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>aspectj-maven-plugin</artifactId>
@@ -111,41 +111,22 @@
                     <Xlint>ignore</Xlint>
                     <encoding>${project.build.sourceEncoding}</encoding>
                     <!-- Post-compile weaving -->
-                    <!--
-                    <weaveDependencies>
-                        <weaveDependency>
-                              <groupId>org.agroup</groupId>
-                              <artifactId>to-weave</artifactId>
-                        </weaveDependency>
-                        <weaveDependency>
-                              <groupId>org.anothergroup</groupId>
-                              <artifactId>gen</artifactId>
-                        </weaveDependency>
-                      </weaveDependencies>
-                      -->
-                </configuration> 
+                    <!-- <weaveDependencies> <weaveDependency> <groupId>org.agroup</groupId> <artifactId>to-weave</artifactId> </weaveDependency> 
+                        <weaveDependency> <groupId>org.anothergroup</groupId> <artifactId>gen</artifactId> </weaveDependency> </weaveDependencies> -->
+                </configuration>
                 <executions>
                     <execution>
                         <goals>
                             <goal>compile</goal>
-                            <goal>test-compile</goal> 
+                            <goal>test-compile</goal>
                         </goals>
                     </execution>
                 </executions>
-           </plugin>
-            
-            <!-- 
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-surefire-plugin</artifactId>
-                <version>2.10</version>
-                <configuration>
-                    <argLine>-javaagent:"${settings.localRepository}"/org/aspectj/aspectjweaver/${aspectj.version}/aspectjweaver-${aspectj.version}.jar</argLine>
-                    <useSystemClassLoader>true</useSystemClassLoader>
-                    <forkMode>always</forkMode>
-                </configuration>
             </plugin>
-             -->
+
+            <!-- <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-surefire-plugin</artifactId> <version>2.10</version> 
+                <configuration> <argLine>-javaagent:"${settings.localRepository}"/org/aspectj/aspectjweaver/${aspectj.version}/aspectjweaver-${aspectj.version}.jar</argLine> 
+                <useSystemClassLoader>true</useSystemClassLoader> <forkMode>always</forkMode> </configuration> </plugin> -->
         </plugins>
     </build>
 
diff --git a/assertj/pom.xml b/assertj/pom.xml
index 0b3bcbacdb..032f33c89d 100644
--- a/assertj/pom.xml
+++ b/assertj/pom.xml
@@ -54,8 +54,8 @@
         <assertj-guava.version>3.1.0</assertj-guava.version>
         <junit.version>4.12</junit.version>
         <assertj-core.version>3.6.1</assertj-core.version>
-        
+
         <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
     </properties>
-    
+
 </project>
\ No newline at end of file
diff --git a/autovalue/pom.xml b/autovalue/pom.xml
index 57c4662e5c..32616dc8bc 100644
--- a/autovalue/pom.xml
+++ b/autovalue/pom.xml
@@ -41,5 +41,5 @@
         <junit.version>4.12</junit.version>
         <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
     </properties>
-    
+
 </project>
diff --git a/cdi/pom.xml b/cdi/pom.xml
index 231390ea5c..e5aaeb2c7b 100644
--- a/cdi/pom.xml
+++ b/cdi/pom.xml
@@ -45,7 +45,7 @@
 
     </dependencies>
 
-    
+
     <build>
         <plugins>
             <plugin>
@@ -61,7 +61,7 @@
             </plugin>
         </plugins>
     </build>
-    
+
     <profiles>
         <profile>
             <id>integration</id>
@@ -101,7 +101,7 @@
         <aspectjweaver.version>1.8.9</aspectjweaver.version>
         <weld-se-core.version>2.4.1.Final</weld-se-core.version>
         <junit.version>4.12</junit.version>
-        <maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>        
+        <maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-9/pom.xml b/core-java-9/pom.xml
index bf9325c935..decba19c53 100644
--- a/core-java-9/pom.xml
+++ b/core-java-9/pom.xml
@@ -1,91 +1,88 @@
-<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">
-	<modelVersion>4.0.0</modelVersion>
-	<groupId>com.baeldung</groupId>
-	<artifactId>core-java9</artifactId>
-	<version>0.2-SNAPSHOT</version>
+<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">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.baeldung</groupId>
+    <artifactId>core-java9</artifactId>
+    <version>0.2-SNAPSHOT</version>
 
-	<name>core-java9</name>
+    <name>core-java9</name>
 
-	<pluginRepositories>
-		<pluginRepository>
-			<id>apache.snapshots</id>
-			<url>http://repository.apache.org/snapshots/</url>
-		</pluginRepository>
-	</pluginRepositories>
+    <pluginRepositories>
+        <pluginRepository>
+            <id>apache.snapshots</id>
+            <url>http://repository.apache.org/snapshots/</url>
+        </pluginRepository>
+    </pluginRepositories>
 
-	<dependencies>
+    <dependencies>
 
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>slf4j-api</artifactId>
-			<version>${org.slf4j.version}</version>
-		</dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+            <version>${org.slf4j.version}</version>
+        </dependency>
 
+        <dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>hamcrest-library</artifactId>
+            <version>${org.hamcrest.version}</version>
+            <scope>test</scope>
+        </dependency>
 
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>${junit.version}</version>
+            <scope>test</scope>
+        </dependency>
 
-		<dependency>
-			<groupId>org.hamcrest</groupId>
-			<artifactId>hamcrest-library</artifactId>
-			<version>${org.hamcrest.version}</version>
-			<scope>test</scope>
-		</dependency>
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>${mockito.version}</version>
+            <scope>test</scope>
+        </dependency>
 
-		<dependency>
-			<groupId>junit</groupId>
-			<artifactId>junit</artifactId>
-			<version>${junit.version}</version>
-			<scope>test</scope>
-		</dependency>
+    </dependencies>
 
-		<dependency>
-			<groupId>org.mockito</groupId>
-			<artifactId>mockito-core</artifactId>
-			<version>${mockito.version}</version>
-			<scope>test</scope>
-		</dependency>
+    <build>
+        <finalName>core-java-9</finalName>
 
-	</dependencies>
+        <plugins>
 
-	<build>
-		<finalName>core-java-9</finalName>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>${maven-compiler-plugin.version}</version>
+                <configuration>
+                    <source>1.9</source>
+                    <target>1.9</target>
+                    <verbose>true</verbose>
+                </configuration>
+            </plugin>
 
-		<plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>${maven-surefire-plugin.version}</version>
+            </plugin>
 
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-compiler-plugin</artifactId>
-				<version>${maven-compiler-plugin.version}</version>
-				<configuration>
-					<source>1.9</source>
-					<target>1.9</target>
-					<verbose>true</verbose>
-				</configuration>
-			</plugin>
+        </plugins>
 
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-surefire-plugin</artifactId>
-				<version>${maven-surefire-plugin.version}</version>
-			</plugin>
+    </build>
 
-		</plugins>
+    <properties>
+        <!-- logging -->
+        <org.slf4j.version>1.7.21</org.slf4j.version>
 
-	</build>
+        <!-- maven plugins -->
+        <maven-compiler-plugin.version>3.6-jigsaw-SNAPSHOT</maven-compiler-plugin.version>
+        <maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
 
-	<properties>
-		<!-- logging -->
-		<org.slf4j.version>1.7.21</org.slf4j.version>
-
-		<!-- maven plugins -->
-		<maven-compiler-plugin.version>3.6-jigsaw-SNAPSHOT</maven-compiler-plugin.version>	
-		<maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
-
-		<!-- testing -->
-		<org.hamcrest.version>1.3</org.hamcrest.version>
-		<junit.version>4.12</junit.version>
-		<mockito.version>1.10.19</mockito.version>
-	</properties>
+        <!-- testing -->
+        <org.hamcrest.version>1.3</org.hamcrest.version>
+        <junit.version>4.12</junit.version>
+        <mockito.version>1.10.19</mockito.version>
+    </properties>
 
 </project>
diff --git a/couchbase-sdk/pom.xml b/couchbase-sdk/pom.xml
index 6462cfb57a..301fd81c51 100644
--- a/couchbase-sdk/pom.xml
+++ b/couchbase-sdk/pom.xml
@@ -1,91 +1,91 @@
 <?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">
-	<modelVersion>4.0.0</modelVersion>
-	<groupId>com.baeldung</groupId>
-	<artifactId>couchbase-sdk</artifactId>
-	<version>0.1-SNAPSHOT</version>
-	<packaging>jar</packaging>
-	<name>couchbase-sdk</name>
-	<description>Couchbase SDK Tutorials</description>
+    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>
+    <groupId>com.baeldung</groupId>
+    <artifactId>couchbase-sdk</artifactId>
+    <version>0.1-SNAPSHOT</version>
+    <packaging>jar</packaging>
+    <name>couchbase-sdk</name>
+    <description>Couchbase SDK Tutorials</description>
 
-	<dependencies>
-		<!-- Couchbase SDK -->
-		<dependency>
-			<groupId>com.couchbase.client</groupId>
-			<artifactId>java-client</artifactId>
-			<version>${couchbase.client.version}</version>
-		</dependency>
+    <dependencies>
+        <!-- Couchbase SDK -->
+        <dependency>
+            <groupId>com.couchbase.client</groupId>
+            <artifactId>java-client</artifactId>
+            <version>${couchbase.client.version}</version>
+        </dependency>
 
-		<!-- Spring Context for Dependency Injection -->
-		<dependency>
-			<groupId>org.springframework</groupId>
-			<artifactId>spring-context</artifactId>
-			<version>${spring-framework.version}</version>
-		</dependency>
-		<dependency>
-			<groupId>org.springframework</groupId>
-			<artifactId>spring-context-support</artifactId>
-			<version>${spring-framework.version}</version>
-		</dependency>
+        <!-- Spring Context for Dependency Injection -->
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>${spring-framework.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context-support</artifactId>
+            <version>${spring-framework.version}</version>
+        </dependency>
 
-		<!-- Logging with SLF4J & LogBack -->
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>slf4j-api</artifactId>
-			<version>${org.slf4j.version}</version>
-			<scope>compile</scope>
-		</dependency>
-		<dependency>
-			<groupId>ch.qos.logback</groupId>
-			<artifactId>logback-classic</artifactId>
-			<version>${logback.version}</version>
-		</dependency>
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>jcl-over-slf4j</artifactId>
-			<version>${org.slf4j.version}</version>
-		</dependency>
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>log4j-over-slf4j</artifactId>
-			<version>${org.slf4j.version}</version>
-		</dependency>
+        <!-- Logging with SLF4J & LogBack -->
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+            <version>${org.slf4j.version}</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <version>${logback.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>jcl-over-slf4j</artifactId>
+            <version>${org.slf4j.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>log4j-over-slf4j</artifactId>
+            <version>${org.slf4j.version}</version>
+        </dependency>
 
-		<!-- Test-Scoped Dependencies -->
-		<dependency>
-			<groupId>org.springframework</groupId>
-			<artifactId>spring-test</artifactId>
-			<version>${spring-framework.version}</version>
-			<scope>test</scope>
-		</dependency>
-		<dependency>
-			<groupId>junit</groupId>
-			<artifactId>junit</artifactId>
-			<version>${junit.version}</version>
-			<scope>test</scope>
-		</dependency>
-		
-		<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
-		<dependency>
-		    <groupId>org.apache.commons</groupId>
-		    <artifactId>commons-lang3</artifactId>
-		    <version>${commons-lang3.version}</version>
-		    <scope>test</scope>
-		</dependency>
-	</dependencies>
+        <!-- Test-Scoped Dependencies -->
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-test</artifactId>
+            <version>${spring-framework.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>${junit.version}</version>
+            <scope>test</scope>
+        </dependency>
 
-	<build>
-		<plugins>
-			<plugin>
-				<artifactId>maven-compiler-plugin</artifactId>
-				<version>${maven-compiler-plugin.version}</version>
-				<configuration>
-					<source>${java.version}</source>
-					<target>${java.version}</target>
-				</configuration>
-			</plugin>
-			<plugin>
+        <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>${commons-lang3.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>${maven-compiler-plugin.version}</version>
+                <configuration>
+                    <source>${java.version}</source>
+                    <target>${java.version}</target>
+                </configuration>
+            </plugin>
+            <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
                 <version>${maven-surefire-plugin.version}</version>
@@ -96,20 +96,20 @@
                     </excludes>
                 </configuration>
             </plugin>
-		</plugins>
-	</build>
+        </plugins>
+    </build>
 
-	<properties>
-		<java.version>1.8</java.version>
-		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<couchbase.client.version>2.3.6</couchbase.client.version>
-		<spring-framework.version>4.3.4.RELEASE</spring-framework.version>
-		<logback.version>1.1.7</logback.version>
-		<org.slf4j.version>1.7.21</org.slf4j.version>
-		<junit.version>4.12</junit.version>
-		<commons-lang3.version>3.5</commons-lang3.version>
-		<maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
+    <properties>
+        <java.version>1.8</java.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <couchbase.client.version>2.3.6</couchbase.client.version>
+        <spring-framework.version>4.3.4.RELEASE</spring-framework.version>
+        <logback.version>1.1.7</logback.version>
+        <org.slf4j.version>1.7.21</org.slf4j.version>
+        <junit.version>4.12</junit.version>
+        <commons-lang3.version>3.5</commons-lang3.version>
+        <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
         <maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
-	</properties>
+    </properties>
 
 </project>
diff --git a/deltaspike/pom.xml b/deltaspike/pom.xml
index b4a7657e97..141b5b0da6 100644
--- a/deltaspike/pom.xml
+++ b/deltaspike/pom.xml
@@ -1,6 +1,6 @@
 <?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/maven-v4_0_0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.baeldung</groupId>
     <artifactId>deltaspike</artifactId>
@@ -19,21 +19,19 @@
     </licenses>
 
     <properties>
-        <!-- Explicitly declaring the source encoding eliminates the following 
-            message: -->
-        <!-- [WARNING] Using platform encoding (UTF-8 actually) to copy filtered 
-            resources, i.e. build is platform dependent! -->
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <!-- Explicitly declaring the source encoding eliminates the following message: -->
+        <!-- [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent! -->
+        <project.build.sourceEncoding>
+            UTF-8</project.build.sourceEncoding>
 
         <slf4j.version>1.7.21</slf4j.version>
         <querydsl.version>3.7.4</querydsl.version>
         <deltaspike.version>1.7.2</deltaspike.version>
-        
+
         <!-- JBoss dependency versions -->
         <wildfly.maven.plugin.version>1.0.2.Final</wildfly.maven.plugin.version>
 
-        <!-- Define the version of the JBoss BOMs we want to import to specify 
-            tested stacks. -->
+        <!-- Define the version of the JBoss BOMs we want to import to specify tested stacks. -->
         <jboss.bom.version>8.2.2.Final</jboss.bom.version>
 
         <!-- other plugin versions -->
@@ -50,14 +48,11 @@
 
     <dependencyManagement>
         <dependencies>
-            <!-- JBoss distributes a complete set of Java EE 7 APIs including a Bill
-                of Materials (BOM). A BOM specifies the versions of a "stack" (or a collection) 
-                of artifacts. We use this here so that we always get the correct versions 
-                of artifacts. Here we use the jboss-javaee-7.0-with-tools stack (you can
-                read this as the JBoss stack of the Java EE 7 APIs, with some extras tools
-                for your project, such as Arquillian for testing) and the jboss-javaee-7.0-with-hibernate
-                stack you can read this as the JBoss stack of the Java EE 7 APIs, with extras
-                from the Hibernate family of projects) -->
+            <!-- JBoss distributes a complete set of Java EE 7 APIs including a Bill of Materials (BOM). A BOM specifies the versions of a "stack" 
+                (or a collection) of artifacts. We use this here so that we always get the correct versions of artifacts. Here we use the jboss-javaee-7.0-with-tools 
+                stack (you can read this as the JBoss stack of the Java EE 7 APIs, with some extras tools for your project, such as Arquillian for testing) and 
+                the jboss-javaee-7.0-with-hibernate stack you can read this as the JBoss stack of the Java EE 7 APIs, with extras from the Hibernate family of 
+                projects) -->
             <dependency>
                 <groupId>org.wildfly.bom</groupId>
                 <artifactId>jboss-javaee-7.0-with-tools</artifactId>
@@ -77,43 +72,37 @@
 
     <dependencies>
 
-        <!-- First declare the APIs we depend on and need for compilation. All 
-            of them are provided by JBoss WildFly -->
+        <!-- First declare the APIs we depend on and need for compilation. All of them are provided by JBoss WildFly -->
 
-        <!-- Import the CDI API, we use provided scope as the API is included in 
-            JBoss WildFly -->
+        <!-- Import the CDI API, we use provided scope as the API is included in JBoss WildFly -->
         <dependency>
             <groupId>javax.enterprise</groupId>
             <artifactId>cdi-api</artifactId>
             <scope>provided</scope>
         </dependency>
 
-        <!-- Import the Common Annotations API (JSR-250), we use provided scope 
-            as the API is included in JBoss WildFly -->
+        <!-- Import the Common Annotations API (JSR-250), we use provided scope as the API is included in JBoss WildFly -->
         <dependency>
             <groupId>org.jboss.spec.javax.annotation</groupId>
             <artifactId>jboss-annotations-api_1.2_spec</artifactId>
             <scope>provided</scope>
         </dependency>
 
-        <!-- Import the JAX-RS API, we use provided scope as the API is included 
-            in JBoss WildFly -->
+        <!-- Import the JAX-RS API, we use provided scope as the API is included in JBoss WildFly -->
         <dependency>
             <groupId>org.jboss.resteasy</groupId>
             <artifactId>jaxrs-api</artifactId>
             <scope>provided</scope>
         </dependency>
 
-        <!-- Import the JPA API, we use provided scope as the API is included in 
-            JBoss WildFly -->
+        <!-- Import the JPA API, we use provided scope as the API is included in JBoss WildFly -->
         <dependency>
             <groupId>org.hibernate.javax.persistence</groupId>
             <artifactId>hibernate-jpa-2.1-api</artifactId>
             <scope>provided</scope>
         </dependency>
 
-        <!-- Import the EJB API, we use provided scope as the API is included in 
-            JBoss WildFly -->
+        <!-- Import the EJB API, we use provided scope as the API is included in JBoss WildFly -->
         <dependency>
             <groupId>org.jboss.spec.javax.ejb</groupId>
             <artifactId>jboss-ejb-api_3.2_spec</artifactId>
@@ -135,8 +124,7 @@
             </exclusions>
         </dependency>
 
-        <!-- Import the JSF API, we use provided scope as the API is included in 
-            JBoss WildFly -->
+        <!-- Import the JSF API, we use provided scope as the API is included in JBoss WildFly -->
         <dependency>
             <groupId>org.jboss.spec.javax.faces</groupId>
             <artifactId>jboss-jsf-api_2.2_spec</artifactId>
@@ -145,16 +133,14 @@
 
         <!-- Now we declare any tools needed -->
 
-        <!-- Annotation processor to generate the JPA 2.0 metamodel classes for 
-            typesafe criteria queries -->
+        <!-- Annotation processor to generate the JPA 2.0 metamodel classes for typesafe criteria queries -->
         <dependency>
             <groupId>org.hibernate</groupId>
             <artifactId>hibernate-jpamodelgen</artifactId>
             <scope>provided</scope>
         </dependency>
 
-        <!-- Annotation processor that raising compilation errors whenever constraint 
-            annotations are incorrectly used. -->
+        <!-- Annotation processor that raising compilation errors whenever constraint annotations are incorrectly used. -->
         <dependency>
             <groupId>org.hibernate</groupId>
             <artifactId>hibernate-validator-annotation-processor</artifactId>
@@ -169,8 +155,7 @@
         </dependency>
 
         <!-- Optional, but highly recommended -->
-        <!-- Arquillian allows you to test enterprise code such as EJBs and Transactional(JTA) 
-            JPA from JUnit/TestNG -->
+        <!-- Arquillian allows you to test enterprise code such as EJBs and Transactional(JTA) JPA from JUnit/TestNG -->
         <dependency>
             <groupId>org.jboss.arquillian.junit</groupId>
             <artifactId>arquillian-junit-container</artifactId>
@@ -225,8 +210,7 @@
     </dependencies>
 
     <build>
-        <!-- Maven will append the version to the finalName (which is the name 
-            given to the generated war, and hence the context root) -->
+        <!-- Maven will append the version to the finalName (which is the name given to the generated war, and hence the context root) -->
         <finalName>${project.artifactId}</finalName>
         <plugins>
             <plugin>
@@ -265,10 +249,8 @@
 
     <profiles>
         <profile>
-            <!-- The default profile skips all tests, though you can tune it to run 
-                just unit tests based on a custom pattern -->
-            <!-- Seperate profiles are provided for running all tests, including Arquillian 
-                tests that execute in the specified container -->
+            <!-- The default profile skips all tests, though you can tune it to run just unit tests based on a custom pattern -->
+            <!-- Seperate profiles are provided for running all tests, including Arquillian tests that execute in the specified container -->
             <id>default</id>
             <activation>
                 <activeByDefault>true</activeByDefault>
@@ -288,10 +270,8 @@
 
         <profile>
 
-            <!-- An optional Arquillian testing profile that executes tests
-                in your WildFly instance -->
-            <!-- This profile will start a new WildFly instance, and execute the
-                test, shutting it down when done -->
+            <!-- An optional Arquillian testing profile that executes tests in your WildFly instance -->
+            <!-- This profile will start a new WildFly instance, and execute the test, shutting it down when done -->
             <!-- Run with: mvn clean test -Parq-wildfly-managed -->
             <id>arq-wildfly-managed</id>
             <dependencies>
diff --git a/dozer/pom.xml b/dozer/pom.xml
index 363285f619..56d5e889c3 100644
--- a/dozer/pom.xml
+++ b/dozer/pom.xml
@@ -1,11 +1,11 @@
 <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/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    
+
     <groupId>com.baeldung</groupId>
     <artifactId>dozer</artifactId>
     <version>1.0</version>
-    
+
     <name>dozer</name>
 
     <build>
@@ -54,7 +54,7 @@
         </dependency>
 
     </dependencies>
-    
+
     <properties>
         <slf4j.version>1.7.21</slf4j.version>
         <commons-lang3.version>3.5</commons-lang3.version>
@@ -62,5 +62,5 @@
         <junit.version>4.12</junit.version>
         <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
     </properties>
-    
+
 </project>
diff --git a/ejb/pom.xml b/ejb/pom.xml
index b00f80a817..bfcc972417 100755
--- a/ejb/pom.xml
+++ b/ejb/pom.xml
@@ -1,6 +1,6 @@
 <?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">
+    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>
     <groupId>com.baeldung.ejb</groupId>
     <artifactId>ejb</artifactId>
@@ -75,8 +75,8 @@
         </pluginManagement>
     </build>
 
-	<modules>
-		<module>ejb-remote</module>
-		<module>ejb-client</module>
-	</modules>
+    <modules>
+        <module>ejb-remote</module>
+        <module>ejb-client</module>
+    </modules>
 </project>
\ No newline at end of file
diff --git a/enterprise-patterns/pom.xml b/enterprise-patterns/pom.xml
index 763227e45b..1c895095dc 100644
--- a/enterprise-patterns/pom.xml
+++ b/enterprise-patterns/pom.xml
@@ -1,7 +1,6 @@
 <?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">
+<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">
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>com.baeldung.enterprise.patterns</groupId>
@@ -32,7 +31,7 @@
             </plugins>
         </pluginManagement>
     </build>
-    
+
     <properties>
         <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
     </properties>
diff --git a/feign/pom.xml b/feign/pom.xml
index 721fa76682..160f37ec2c 100644
--- a/feign/pom.xml
+++ b/feign/pom.xml
@@ -1,6 +1,6 @@
 <?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">
+    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>
 
     <groupId>com.baeldung.feign</groupId>