diff --git a/antlr/pom.xml b/antlr/pom.xml
index ac66891598..91b939a882 100644
--- a/antlr/pom.xml
+++ b/antlr/pom.xml
@@ -10,6 +10,14 @@
         <version>1.0.0-SNAPSHOT</version>
     </parent>
 
+    <dependencies>
+        <dependency>
+            <groupId>org.antlr</groupId>
+            <artifactId>antlr4-runtime</artifactId>
+            <version>${antlr.version}</version>
+        </dependency>
+    </dependencies>
+
     <build>
         <plugins>
             <plugin>
@@ -44,13 +52,7 @@
             </plugin>
         </plugins>
     </build>
-    <dependencies>
-        <dependency>
-            <groupId>org.antlr</groupId>
-            <artifactId>antlr4-runtime</artifactId>
-            <version>${antlr.version}</version>
-        </dependency>
-    </dependencies>
+    	
     <properties>
         <antlr.version>4.7.1</antlr.version>
         <mojo.version>3.0.0</mojo.version>
diff --git a/apache-cxf/sse-jaxrs/sse-jaxrs-client/pom.xml b/apache-cxf/sse-jaxrs/sse-jaxrs-client/pom.xml
index c7acf22c32..be2138e172 100644
--- a/apache-cxf/sse-jaxrs/sse-jaxrs-client/pom.xml
+++ b/apache-cxf/sse-jaxrs/sse-jaxrs-client/pom.xml
@@ -12,9 +12,18 @@
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <properties>
-        <cxf-version>3.2.0</cxf-version>
-    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.cxf</groupId>
+            <artifactId>cxf-rt-rs-client</artifactId>
+            <version>${cxf-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.cxf</groupId>
+            <artifactId>cxf-rt-rs-sse</artifactId>
+            <version>${cxf-version}</version>
+        </dependency>
+    </dependencies>
 
     <build>
         <plugins>
@@ -45,17 +54,8 @@
         </plugins>
     </build>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.apache.cxf</groupId>
-            <artifactId>cxf-rt-rs-client</artifactId>
-            <version>${cxf-version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.cxf</groupId>
-            <artifactId>cxf-rt-rs-sse</artifactId>
-            <version>${cxf-version}</version>
-        </dependency>
-    </dependencies>
+    <properties>
+        <cxf-version>3.2.0</cxf-version>
+    </properties>
 
 </project>
diff --git a/apache-cxf/sse-jaxrs/sse-jaxrs-server/pom.xml b/apache-cxf/sse-jaxrs/sse-jaxrs-server/pom.xml
index eeb5726ee1..43bbcf1ef4 100644
--- a/apache-cxf/sse-jaxrs/sse-jaxrs-server/pom.xml
+++ b/apache-cxf/sse-jaxrs/sse-jaxrs-server/pom.xml
@@ -13,11 +13,28 @@
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <properties>
-        <liberty-maven-plugin.version>2.4.2</liberty-maven-plugin.version>
-        <failOnMissingWebXml>false</failOnMissingWebXml>
-        <openliberty-version>18.0.0.2</openliberty-version>
-    </properties>
+    <dependencies>
+
+        <dependency>
+            <groupId>javax.ws.rs</groupId>
+            <artifactId>javax.ws.rs-api</artifactId>
+            <version>2.1</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.enterprise</groupId>
+            <artifactId>cdi-api</artifactId>
+            <version>2.0</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.json.bind</groupId>
+            <artifactId>javax.json.bind-api</artifactId>
+            <version>1.0</version>
+            <scope>provided</scope>
+        </dependency>
+
+    </dependencies>
 
     <build>
         <finalName>${project.artifactId}</finalName>
@@ -59,27 +76,10 @@
         </plugins>
     </build>
 
-    <dependencies>
-
-        <dependency>
-            <groupId>javax.ws.rs</groupId>
-            <artifactId>javax.ws.rs-api</artifactId>
-            <version>2.1</version>
-            <scope>provided</scope>
-        </dependency>
-        <dependency>
-            <groupId>javax.enterprise</groupId>
-            <artifactId>cdi-api</artifactId>
-            <version>2.0</version>
-            <scope>provided</scope>
-        </dependency>
-        <dependency>
-            <groupId>javax.json.bind</groupId>
-            <artifactId>javax.json.bind-api</artifactId>
-            <version>1.0</version>
-            <scope>provided</scope>
-        </dependency>
-
-    </dependencies>
+    <properties>
+        <liberty-maven-plugin.version>2.4.2</liberty-maven-plugin.version>
+        <failOnMissingWebXml>false</failOnMissingWebXml>
+        <openliberty-version>18.0.0.2</openliberty-version>
+    </properties>
 
 </project>
diff --git a/cloud-foundry-uaa/cf-uaa-oauth2-client/pom.xml b/cloud-foundry-uaa/cf-uaa-oauth2-client/pom.xml
index 8e31cc41fb..f650498b69 100644
--- a/cloud-foundry-uaa/cf-uaa-oauth2-client/pom.xml
+++ b/cloud-foundry-uaa/cf-uaa-oauth2-client/pom.xml
@@ -2,24 +2,20 @@
 <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>
-    <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.3.RELEASE</version>
-        <relativePath/> <!-- lookup parent from repository -->
-    </parent>
     <groupId>com.example</groupId>
     <artifactId>cf-uaa-oauth2-client</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <name>uaa-client-webapp</name>
     <description>Demo project for Spring Boot</description>
 
-    <properties>
-        <java.version>1.8</java.version>
-    </properties>
+    <parent>
+        <artifactId>parent-boot-2</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-2</relativePath>
+    </parent>
 
     <dependencies>
-
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
@@ -28,7 +24,6 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-oauth2-client</artifactId>
         </dependency>
-
     </dependencies>
 
     <build>
@@ -40,4 +35,7 @@
         </plugins>
     </build>
 
+    <properties>
+        <java.version>1.8</java.version>
+    </properties>
 </project>
diff --git a/cloud-foundry-uaa/cf-uaa-oauth2-resource-server/pom.xml b/cloud-foundry-uaa/cf-uaa-oauth2-resource-server/pom.xml
index 9cf8993cd2..710cecbd4e 100644
--- a/cloud-foundry-uaa/cf-uaa-oauth2-resource-server/pom.xml
+++ b/cloud-foundry-uaa/cf-uaa-oauth2-resource-server/pom.xml
@@ -2,24 +2,20 @@
 <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>
-    <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.3.RELEASE</version>
-        <relativePath/> <!-- lookup parent from repository -->
-    </parent>
     <groupId>com.baeldung.cfuaa</groupId>
     <artifactId>cf-uaa-oauth2-resource-server</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <name>cf-uaa-oauth2-resource-server</name>
     <description>Demo project for Spring Boot</description>
 
-    <properties>
-        <java.version>1.8</java.version>
-    </properties>
-
+    <parent>
+        <artifactId>parent-boot-2</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-2</relativePath>
+    </parent>
+	
     <dependencies>
-
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-oauth2-resource-server</artifactId>
@@ -28,7 +24,6 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
-
     </dependencies>
 
     <build>
@@ -40,4 +35,8 @@
         </plugins>
     </build>
 
+    <properties>
+        <java.version>1.8</java.version>
+    </properties>
+
 </project>
diff --git a/helidon/helidon-mp/pom.xml b/helidon/helidon-mp/pom.xml
index 1f39431886..82d52ca2ef 100644
--- a/helidon/helidon-mp/pom.xml
+++ b/helidon/helidon-mp/pom.xml
@@ -15,13 +15,18 @@
         <dependency>
             <groupId>io.helidon.microprofile.bundles</groupId>
             <artifactId>helidon-microprofile-1.2</artifactId>
-            <version>0.10.4</version>
+            <version>${helidon-microprofile.version}</version>
         </dependency>
         <dependency>
             <groupId>org.glassfish.jersey.media</groupId>
             <artifactId>jersey-media-json-binding</artifactId>
-            <version>2.26</version>
+            <version>${jersey-media-json-binding.version}</version>
         </dependency>
     </dependencies>
 
+    <properties>
+        <helidon-microprofile.version>0.10.4</helidon-microprofile.version>
+        <jersey-media-json-binding.version>2.26</jersey-media-json-binding.version>
+    </properties>
+
 </project>
diff --git a/helidon/helidon-se/pom.xml b/helidon/helidon-se/pom.xml
index 8982bf048e..ae16fa16e4 100644
--- a/helidon/helidon-se/pom.xml
+++ b/helidon/helidon-se/pom.xml
@@ -12,10 +12,6 @@
         <version>1.0.0-SNAPSHOT</version>
     </parent>
 
-    <properties>
-        <helidon.version>0.10.4</helidon.version>
-    </properties>
-
     <dependencies>
         <!--Config-->
         <dependency>
@@ -61,4 +57,8 @@
 
     </dependencies>
 
+    <properties>
+        <helidon.version>0.10.4</helidon.version>
+    </properties>
+
 </project>
\ No newline at end of file
diff --git a/java-collections-maps-2/pom.xml b/java-collections-maps-2/pom.xml
index b025c5e32d..4ab94a7ae3 100644
--- a/java-collections-maps-2/pom.xml
+++ b/java-collections-maps-2/pom.xml
@@ -24,22 +24,25 @@
         <dependency>
             <groupId>net.sf.trove4j</groupId>
             <artifactId>trove4j</artifactId>
-            <version>3.0.2</version>
+            <version>${trove4j.version}</version>
         </dependency>
         <dependency>
             <groupId>it.unimi.dsi</groupId>
             <artifactId>fastutil</artifactId>
-            <version>8.1.0</version>
+            <version>${fastutil.version}</version>
         </dependency>
         <dependency>
             <groupId>colt</groupId>
             <artifactId>colt</artifactId>
-            <version>1.2.0</version>
+            <version>${colt.version}</version>
         </dependency>
     </dependencies>
 
     <properties>
         <eclipse-collections.version>8.2.0</eclipse-collections.version>
+        <trove4j.version>3.0.2</trove4j.version>
+        <fastutil.version>8.1.0</fastutil.version>
+        <colt.version>1.2.0</colt.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/java-streams-2/pom.xml b/java-streams-2/pom.xml
index cd89a1a80f..5004249352 100644
--- a/java-streams-2/pom.xml
+++ b/java-streams-2/pom.xml
@@ -4,36 +4,47 @@
     <groupId>com.baeldung.javastreams2</groupId>
     <artifactId>javastreams2</artifactId>
     <version>1.0</version>
+    <name>Stream Reduce</name>
     <packaging>jar</packaging>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-java</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-java</relativePath>
+    </parent>
+
     <dependencies>
         <dependency>
             <groupId>org.openjdk.jmh</groupId>
             <artifactId>jmh-core</artifactId>
-            <version>1.21</version>
+            <version>${jmh.version}</version>
         </dependency>
         <dependency>
             <groupId>org.openjdk.jmh</groupId>
             <artifactId>jmh-generator-annprocess</artifactId>
-            <version>1.21</version>
+            <version>${jmh.version}</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>${junit.version}</version>
             <scope>test</scope>
             <type>jar</type>
         </dependency>
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
-            <version>3.11.1</version>
+            <version>${assertj.version}</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
-    <name>Stream Reduce</name>
+	
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
+        <jmh.version>1.21</jmh.version>
+        <assertj.version>3.11.1</assertj.version>
     </properties>
 </project>
\ No newline at end of file
diff --git a/jhipster-5/bookstore-monolith/pom.xml b/jhipster-5/bookstore-monolith/pom.xml
index e46804a04c..60fc1acf92 100644
--- a/jhipster-5/bookstore-monolith/pom.xml
+++ b/jhipster-5/bookstore-monolith/pom.xml
@@ -18,91 +18,6 @@
 
     <!-- jhipster-needle-distribution-management -->
 
-    <properties>
-        <!-- Build properties -->
-        <maven.version>3.0.0</maven.version>
-        <java.version>1.8</java.version>
-        <scala.version>2.12.6</scala.version>
-        <node.version>v10.15.0</node.version>
-        <npm.version>6.4.1</npm.version>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <project.testresult.directory>${project.build.directory}/test-results</project.testresult.directory>
-        <maven.build.timestamp.format>yyyyMMddHHmmss</maven.build.timestamp.format>
-        <maven.compiler.source>${java.version}</maven.compiler.source>
-        <maven.compiler.target>${java.version}</maven.compiler.target>
-        <argLine>-Djava.security.egd=file:/dev/./urandom -Xmx256m</argLine>
-        <m2e.apt.activation>jdt_apt</m2e.apt.activation>
-        <run.addResources>false</run.addResources>
-        <!-- These remain empty unless the corresponding profile is active -->
-        <profile.no-liquibase />
-        <profile.swagger />
-        <profile.tls />
-
-        <!-- Dependency versions -->
-        <jhipster-dependencies.version>2.1.1</jhipster-dependencies.version>
-        <!-- The spring-boot version should match the one managed by
-        https://mvnrepository.com/artifact/io.github.jhipster/jhipster-dependencies/${jhipster-dependencies.version} -->
-        <spring-boot.version>2.0.8.RELEASE</spring-boot.version>
-        <!-- The hibernate version should match the one managed by
-        https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-dependencies/${spring-boot.version} -->
-        <hibernate.version>5.2.17.Final</hibernate.version>
-        <!-- The javassist version should match the one managed by
-        https://mvnrepository.com/artifact/org.hibernate/hibernate-core/${hibernate.version} -->
-        <javassist.version>3.22.0-GA</javassist.version>
-        <!-- The liquibase version should match the one managed by
-        https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-dependencies/${spring-boot.version} -->
-        <liquibase.version>3.5.5</liquibase.version>
-        <liquibase-hibernate5.version>3.6</liquibase-hibernate5.version>
-        <validation-api.version>2.0.1.Final</validation-api.version>
-        <mapstruct.version>1.2.0.Final</mapstruct.version>
-
-        <!-- Plugin versions -->
-        <maven-clean-plugin.version>3.1.0</maven-clean-plugin.version>
-        <maven-compiler-plugin.version>3.8.0</maven-compiler-plugin.version>
-        <maven-eclipse-plugin.version>2.10</maven-eclipse-plugin.version>
-        <maven-enforcer-plugin.version>3.0.0-M2</maven-enforcer-plugin.version>
-        <maven-idea-plugin.version>2.2.1</maven-idea-plugin.version>
-        <maven-resources-plugin.version>3.1.0</maven-resources-plugin.version>
-        <maven-surefire-plugin.version>2.22.1</maven-surefire-plugin.version>
-        <maven-war-plugin.version>3.2.2</maven-war-plugin.version>
-        <jib-maven-plugin.version>0.9.11</jib-maven-plugin.version>
-        <frontend-maven-plugin.version>1.6</frontend-maven-plugin.version>
-        <jacoco-maven-plugin.version>0.8.2</jacoco-maven-plugin.version>
-        <lifecycle-mapping.version>1.0.0</lifecycle-mapping.version>
-        <scala-maven-plugin.version>3.4.2</scala-maven-plugin.version>
-        <sonar-maven-plugin.version>3.5.0.1254</sonar-maven-plugin.version>
-        <git-commit-id-plugin.version>2.2.5</git-commit-id-plugin.version>
-
-        <!-- Sonar properties -->
-        <sonar.host.url>http://localhost:9001</sonar.host.url>
-        <sonar.exclusions>src/main/webapp/content/**/*.*, src/main/webapp/i18n/*.js, target/www/**/*.*</sonar.exclusions>
-        <sonar.issue.ignore.multicriteria>S3437,S4502,S4684,UndocumentedApi,BoldAndItalicTagsCheck</sonar.issue.ignore.multicriteria>
-        <!-- Rule https://sonarcloud.io/coding_rules?open=Web%3ABoldAndItalicTagsCheck&rule_key=Web%3ABoldAndItalicTagsCheck is ignored. Even if we agree that using the "i" tag is an awful practice, this is what is recommended by http://fontawesome.io/examples/ -->
-        <sonar.issue.ignore.multicriteria.BoldAndItalicTagsCheck.resourceKey>src/main/webapp/app/**/*.*</sonar.issue.ignore.multicriteria.BoldAndItalicTagsCheck.resourceKey>
-        <sonar.issue.ignore.multicriteria.BoldAndItalicTagsCheck.ruleKey>Web:BoldAndItalicTagsCheck</sonar.issue.ignore.multicriteria.BoldAndItalicTagsCheck.ruleKey>
-        <!-- Rule https://sonarcloud.io/coding_rules?open=squid%3AS3437&rule_key=squid%3AS3437 is ignored, as a JPA-managed field cannot be transient -->
-        <sonar.issue.ignore.multicriteria.S3437.resourceKey>src/main/java/**/*</sonar.issue.ignore.multicriteria.S3437.resourceKey>
-        <sonar.issue.ignore.multicriteria.S3437.ruleKey>squid:S3437</sonar.issue.ignore.multicriteria.S3437.ruleKey>
-        <!-- Rule https://sonarcloud.io/coding_rules?open=squid%3AUndocumentedApi&rule_key=squid%3AUndocumentedApi is ignored, as we want to follow "clean code" guidelines and classes, methods and arguments names should be self-explanatory -->
-        <sonar.issue.ignore.multicriteria.UndocumentedApi.resourceKey>src/main/java/**/*</sonar.issue.ignore.multicriteria.UndocumentedApi.resourceKey>
-        <sonar.issue.ignore.multicriteria.UndocumentedApi.ruleKey>squid:UndocumentedApi</sonar.issue.ignore.multicriteria.UndocumentedApi.ruleKey>
-        <!-- Rule https://sonarcloud.io/coding_rules?open=squid%3AS4502&rule_key=squid%3AS4502 is ignored, as for JWT tokens we are not subject to CSRF attack -->
-        <sonar.issue.ignore.multicriteria.S4502.resourceKey>src/main/java/**/*</sonar.issue.ignore.multicriteria.S4502.resourceKey>
-        <sonar.issue.ignore.multicriteria.S4502.ruleKey>squid:S4502</sonar.issue.ignore.multicriteria.S4502.ruleKey>
-        <!-- Rule https://sonarcloud.io/coding_rules?open=squid%3AS4684&rule_key=squid%3AS4684 -->
-        <sonar.issue.ignore.multicriteria.S4684.resourceKey>src/main/java/**/*</sonar.issue.ignore.multicriteria.S4684.resourceKey>
-        <sonar.issue.ignore.multicriteria.S4684.ruleKey>squid:S4684</sonar.issue.ignore.multicriteria.S4684.ruleKey>
-        <sonar.jacoco.reportPaths>${project.testresult.directory}/coverage/jacoco/jacoco.exec</sonar.jacoco.reportPaths>
-        <sonar.java.codeCoveragePlugin>jacoco</sonar.java.codeCoveragePlugin>
-        <sonar.typescript.lcov.reportPaths>${project.testresult.directory}/lcov.info</sonar.typescript.lcov.reportPaths>
-        <sonar.sources>${project.basedir}/src/main/</sonar.sources>
-        <sonar.junit.reportsPath>${project.testresult.directory}</sonar.junit.reportsPath>
-        <sonar.tests>${project.basedir}/src/test/</sonar.tests>
-
-        <!-- jhipster-needle-maven-property -->
-    </properties>
-
     <dependencyManagement>
         <dependencies>
             <dependency>
@@ -1082,4 +997,89 @@
         </profile>
         <!-- jhipster-needle-maven-add-profile -->
     </profiles>
+
+    <properties>
+        <!-- Build properties -->
+        <maven.version>3.0.0</maven.version>
+        <java.version>1.8</java.version>
+        <scala.version>2.12.6</scala.version>
+        <node.version>v10.15.0</node.version>
+        <npm.version>6.4.1</npm.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <project.testresult.directory>${project.build.directory}/test-results</project.testresult.directory>
+        <maven.build.timestamp.format>yyyyMMddHHmmss</maven.build.timestamp.format>
+        <maven.compiler.source>${java.version}</maven.compiler.source>
+        <maven.compiler.target>${java.version}</maven.compiler.target>
+        <argLine>-Djava.security.egd=file:/dev/./urandom -Xmx256m</argLine>
+        <m2e.apt.activation>jdt_apt</m2e.apt.activation>
+        <run.addResources>false</run.addResources>
+        <!-- These remain empty unless the corresponding profile is active -->
+        <profile.no-liquibase />
+        <profile.swagger />
+        <profile.tls />
+
+        <!-- Dependency versions -->
+        <jhipster-dependencies.version>2.1.1</jhipster-dependencies.version>
+        <!-- The spring-boot version should match the one managed by
+        https://mvnrepository.com/artifact/io.github.jhipster/jhipster-dependencies/${jhipster-dependencies.version} -->
+        <spring-boot.version>2.0.8.RELEASE</spring-boot.version>
+        <!-- The hibernate version should match the one managed by
+        https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-dependencies/${spring-boot.version} -->
+        <hibernate.version>5.2.17.Final</hibernate.version>
+        <!-- The javassist version should match the one managed by
+        https://mvnrepository.com/artifact/org.hibernate/hibernate-core/${hibernate.version} -->
+        <javassist.version>3.22.0-GA</javassist.version>
+        <!-- The liquibase version should match the one managed by
+        https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-dependencies/${spring-boot.version} -->
+        <liquibase.version>3.5.5</liquibase.version>
+        <liquibase-hibernate5.version>3.6</liquibase-hibernate5.version>
+        <validation-api.version>2.0.1.Final</validation-api.version>
+        <mapstruct.version>1.2.0.Final</mapstruct.version>
+
+        <!-- Plugin versions -->
+        <maven-clean-plugin.version>3.1.0</maven-clean-plugin.version>
+        <maven-compiler-plugin.version>3.8.0</maven-compiler-plugin.version>
+        <maven-eclipse-plugin.version>2.10</maven-eclipse-plugin.version>
+        <maven-enforcer-plugin.version>3.0.0-M2</maven-enforcer-plugin.version>
+        <maven-idea-plugin.version>2.2.1</maven-idea-plugin.version>
+        <maven-resources-plugin.version>3.1.0</maven-resources-plugin.version>
+        <maven-surefire-plugin.version>2.22.1</maven-surefire-plugin.version>
+        <maven-war-plugin.version>3.2.2</maven-war-plugin.version>
+        <jib-maven-plugin.version>0.9.11</jib-maven-plugin.version>
+        <frontend-maven-plugin.version>1.6</frontend-maven-plugin.version>
+        <jacoco-maven-plugin.version>0.8.2</jacoco-maven-plugin.version>
+        <lifecycle-mapping.version>1.0.0</lifecycle-mapping.version>
+        <scala-maven-plugin.version>3.4.2</scala-maven-plugin.version>
+        <sonar-maven-plugin.version>3.5.0.1254</sonar-maven-plugin.version>
+        <git-commit-id-plugin.version>2.2.5</git-commit-id-plugin.version>
+
+        <!-- Sonar properties -->
+        <sonar.host.url>http://localhost:9001</sonar.host.url>
+        <sonar.exclusions>src/main/webapp/content/**/*.*, src/main/webapp/i18n/*.js, target/www/**/*.*</sonar.exclusions>
+        <sonar.issue.ignore.multicriteria>S3437,S4502,S4684,UndocumentedApi,BoldAndItalicTagsCheck</sonar.issue.ignore.multicriteria>
+        <!-- Rule https://sonarcloud.io/coding_rules?open=Web%3ABoldAndItalicTagsCheck&rule_key=Web%3ABoldAndItalicTagsCheck is ignored. Even if we agree that using the "i" tag is an awful practice, this is what is recommended by http://fontawesome.io/examples/ -->
+        <sonar.issue.ignore.multicriteria.BoldAndItalicTagsCheck.resourceKey>src/main/webapp/app/**/*.*</sonar.issue.ignore.multicriteria.BoldAndItalicTagsCheck.resourceKey>
+        <sonar.issue.ignore.multicriteria.BoldAndItalicTagsCheck.ruleKey>Web:BoldAndItalicTagsCheck</sonar.issue.ignore.multicriteria.BoldAndItalicTagsCheck.ruleKey>
+        <!-- Rule https://sonarcloud.io/coding_rules?open=squid%3AS3437&rule_key=squid%3AS3437 is ignored, as a JPA-managed field cannot be transient -->
+        <sonar.issue.ignore.multicriteria.S3437.resourceKey>src/main/java/**/*</sonar.issue.ignore.multicriteria.S3437.resourceKey>
+        <sonar.issue.ignore.multicriteria.S3437.ruleKey>squid:S3437</sonar.issue.ignore.multicriteria.S3437.ruleKey>
+        <!-- Rule https://sonarcloud.io/coding_rules?open=squid%3AUndocumentedApi&rule_key=squid%3AUndocumentedApi is ignored, as we want to follow "clean code" guidelines and classes, methods and arguments names should be self-explanatory -->
+        <sonar.issue.ignore.multicriteria.UndocumentedApi.resourceKey>src/main/java/**/*</sonar.issue.ignore.multicriteria.UndocumentedApi.resourceKey>
+        <sonar.issue.ignore.multicriteria.UndocumentedApi.ruleKey>squid:UndocumentedApi</sonar.issue.ignore.multicriteria.UndocumentedApi.ruleKey>
+        <!-- Rule https://sonarcloud.io/coding_rules?open=squid%3AS4502&rule_key=squid%3AS4502 is ignored, as for JWT tokens we are not subject to CSRF attack -->
+        <sonar.issue.ignore.multicriteria.S4502.resourceKey>src/main/java/**/*</sonar.issue.ignore.multicriteria.S4502.resourceKey>
+        <sonar.issue.ignore.multicriteria.S4502.ruleKey>squid:S4502</sonar.issue.ignore.multicriteria.S4502.ruleKey>
+        <!-- Rule https://sonarcloud.io/coding_rules?open=squid%3AS4684&rule_key=squid%3AS4684 -->
+        <sonar.issue.ignore.multicriteria.S4684.resourceKey>src/main/java/**/*</sonar.issue.ignore.multicriteria.S4684.resourceKey>
+        <sonar.issue.ignore.multicriteria.S4684.ruleKey>squid:S4684</sonar.issue.ignore.multicriteria.S4684.ruleKey>
+        <sonar.jacoco.reportPaths>${project.testresult.directory}/coverage/jacoco/jacoco.exec</sonar.jacoco.reportPaths>
+        <sonar.java.codeCoveragePlugin>jacoco</sonar.java.codeCoveragePlugin>
+        <sonar.typescript.lcov.reportPaths>${project.testresult.directory}/lcov.info</sonar.typescript.lcov.reportPaths>
+        <sonar.sources>${project.basedir}/src/main/</sonar.sources>
+        <sonar.junit.reportsPath>${project.testresult.directory}</sonar.junit.reportsPath>
+        <sonar.tests>${project.basedir}/src/test/</sonar.tests>
+
+        <!-- jhipster-needle-maven-property -->
+    </properties>
 </project>
diff --git a/libraries2/pom.xml b/libraries2/pom.xml
index 84f19b359d..a839f56b56 100644
--- a/libraries2/pom.xml
+++ b/libraries2/pom.xml
@@ -13,10 +13,6 @@
 		<version>1.0.0-SNAPSHOT</version>
 	</parent>
 
-	<properties>
-		<jbpm.version>6.0.0.Final</jbpm.version>
-	</properties>
-
 	<repositories>
 		<repository>
 			<id>jboss-public-repository-group</id>
@@ -40,4 +36,8 @@
 			<version>${jbpm.version}</version>
 		</dependency>
 	</dependencies>
+
+	<properties>
+		<jbpm.version>6.0.0.Final</jbpm.version>
+	</properties>
 </project>
diff --git a/maven/custom-rule/pom.xml b/maven/custom-rule/pom.xml
index 25a3489fb9..2fbeb18922 100644
--- a/maven/custom-rule/pom.xml
+++ b/maven/custom-rule/pom.xml
@@ -2,20 +2,15 @@
 <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>
+    <artifactId>custom-rule</artifactId>
+	<name>custom-rule</name>
+	
     <parent>
         <artifactId>maven</artifactId>
         <groupId>com.baeldung</groupId>
         <version>0.0.1-SNAPSHOT</version>
     </parent>
-    <modelVersion>4.0.0</modelVersion>
-    <artifactId>custom-rule</artifactId>
-	<name>custom-rule</name>
-
-    <properties>
-        <api.version>3.0.0-M2</api.version>
-        <maven.version>2.0.9</maven.version>
-    </properties>
-
 
     <dependencies>
         <!-- dependencies for maven plugin-->
@@ -47,7 +42,7 @@
         <dependency>
             <groupId>org.codehaus.plexus</groupId>
             <artifactId>plexus-container-default</artifactId>
-            <version>1.0-alpha-9</version>
+            <version>${plexus-container-default.version}</version>
         </dependency>
     </dependencies>
 
@@ -64,7 +59,9 @@
         </plugins>
     </build>
 
-
-
-
-</project>
\ No newline at end of file
+    <properties>
+        <api.version>3.0.0-M2</api.version>
+        <maven.version>2.0.9</maven.version>
+        <plexus-container-default.version>1.0-alpha-9</plexus-container-default.version>
+    </properties>
+</project>
diff --git a/maven/maven-enforcer/pom.xml b/maven/maven-enforcer/pom.xml
index 9826beb0d9..b18be4f43d 100644
--- a/maven/maven-enforcer/pom.xml
+++ b/maven/maven-enforcer/pom.xml
@@ -2,14 +2,15 @@
 <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>
+    <artifactId>maven-enforcer</artifactId>
+	<name>maven-enforcer</name>
+    	
     <parent>
         <artifactId>maven</artifactId>
         <groupId>com.baeldung</groupId>
         <version>0.0.1-SNAPSHOT</version>
     </parent>
-    <modelVersion>4.0.0</modelVersion>
-    <artifactId>maven-enforcer</artifactId>
-	<name>maven-enforcer</name>
 
     <build>
         <plugins>
diff --git a/maven/maven-war-plugin/pom.xml b/maven/maven-war-plugin/pom.xml
index 5169a21e78..517c08978f 100644
--- a/maven/maven-war-plugin/pom.xml
+++ b/maven/maven-war-plugin/pom.xml
@@ -7,11 +7,6 @@
     <version>0.0.1-SNAPSHOT</version>
     <packaging>war</packaging>
     <name>maven-war-plugin-property</name>
-    
-    <!-- Set failOnMissingWebXml as false in properties section -->
-    <properties>
-        <failOnMissingWebXml>false</failOnMissingWebXml>
-    </properties>
 
     <build>
         <plugins>
@@ -26,4 +21,9 @@
             </plugin>
         </plugins>
     </build>
+    
+    <!-- Set failOnMissingWebXml as false in properties section -->
+    <properties>
+        <failOnMissingWebXml>false</failOnMissingWebXml>
+    </properties>
 </project>
\ No newline at end of file
diff --git a/patterns/solid/pom.xml b/patterns/solid/pom.xml
index 146a9903cf..faf8bdc8d9 100644
--- a/patterns/solid/pom.xml
+++ b/patterns/solid/pom.xml
@@ -8,7 +8,7 @@
     <name>solid</name>
     <version>1.0-SNAPSHOT</version>
 
- <parent>
+    <parent>
         <groupId>com.baeldung</groupId>
         <artifactId>patterns</artifactId>
         <version>1.0.0-SNAPSHOT</version>
diff --git a/persistence-modules/jnosql/jnosql-artemis/pom.xml b/persistence-modules/jnosql/jnosql-artemis/pom.xml
index a07f26c6ee..09d6af13df 100644
--- a/persistence-modules/jnosql/jnosql-artemis/pom.xml
+++ b/persistence-modules/jnosql/jnosql-artemis/pom.xml
@@ -17,7 +17,7 @@
         <dependency>
             <groupId>javax</groupId>
             <artifactId>javaee-web-api</artifactId>
-            <version>8.0</version>
+            <version>${javaee-web-api.version}</version>
             <scope>provided</scope>
         </dependency>
         <dependency>
@@ -80,6 +80,7 @@
     <properties>
         <liberty-maven-plugin.version>2.4.2</liberty-maven-plugin.version>
         <failOnMissingWebXml>false</failOnMissingWebXml>
+        <javaee-web-api.version>8.0</javaee-web-api.version>
     </properties>
 
 </project>
diff --git a/pom.xml b/pom.xml
index e0622d3d6e..e74c5cd670 100644
--- a/pom.xml
+++ b/pom.xml
@@ -7,11 +7,12 @@
 	<groupId>com.baeldung</groupId>
 	<artifactId>parent-modules</artifactId>
 	<version>1.0.0-SNAPSHOT</version>
+    <name>parent-modules</name>
+	<packaging>pom</packaging>
+    	
     <modules>
         <module>lombok-custom</module>
     </modules>
-    <name>parent-modules</name>
-	<packaging>pom</packaging>
 
 	<dependencies>
 		<!-- logging -->
diff --git a/software-security/sql-injection-samples/pom.xml b/software-security/sql-injection-samples/pom.xml
index 5b33c674d4..0a28a96a07 100644
--- a/software-security/sql-injection-samples/pom.xml
+++ b/software-security/sql-injection-samples/pom.xml
@@ -17,7 +17,6 @@
 
 	<dependencies>
 	
-	
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-jdbc</artifactId>
@@ -54,7 +53,6 @@
 		    <artifactId>hibernate-jpamodelgen</artifactId>
 		</dependency>
 
-
 	</dependencies>
 
 	<build>
diff --git a/spring-cloud-data-flow/apache-spark-job/pom.xml b/spring-cloud-data-flow/apache-spark-job/pom.xml
index 390b7ebdc6..671e8ed71a 100644
--- a/spring-cloud-data-flow/apache-spark-job/pom.xml
+++ b/spring-cloud-data-flow/apache-spark-job/pom.xml
@@ -2,24 +2,25 @@
 <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>
+    <artifactId>apache-spark-job</artifactId>
+	
     <parent>
         <artifactId>spring-cloud-data-flow</artifactId>
         <groupId>com.baeldung</groupId>
         <version>0.0.1-SNAPSHOT</version>
     </parent>
-    <modelVersion>4.0.0</modelVersion>
-
-    <artifactId>apache-spark-job</artifactId>
+    
     <dependencies>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-task-core</artifactId>
-                <version>2.0.0.RELEASE</version>
+                <version>${spring-cloud-task-core.version}</version>
         </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-core_2.10</artifactId>
-            <version>1.6.2</version>
+            <artifactId>spark-core_${scala.version}</artifactId>
+            <version>${spark.version}</version>
             <exclusions>
                 <exclusion>
                     <groupId>log4j</groupId>
@@ -33,4 +34,10 @@
         </dependency>
     </dependencies>
 
+    <properties>
+        <spark.version>1.6.2</spark.version>
+        <scala.version>2.10</scala.version>
+        <spring-cloud-task-core.version>2.0.0.RELEASE</spring-cloud-task-core.version>
+    </properties>
+
 </project>
\ No newline at end of file
diff --git a/spring-cloud/spring-cloud-archaius/extra-configs/pom.xml b/spring-cloud/spring-cloud-archaius/extra-configs/pom.xml
index c3c830f197..f7e5807f43 100644
--- a/spring-cloud/spring-cloud-archaius/extra-configs/pom.xml
+++ b/spring-cloud/spring-cloud-archaius/extra-configs/pom.xml
@@ -37,6 +37,7 @@
             </dependency>
         </dependencies>
     </dependencyManagement>
+
     <properties>
         <spring-cloud-dependencies.version>2.0.1.RELEASE</spring-cloud-dependencies.version>
     </properties>
diff --git a/spring-cloud/spring-cloud-consul/pom.xml b/spring-cloud/spring-cloud-consul/pom.xml
index 1ca3d703b5..456a7ec302 100644
--- a/spring-cloud/spring-cloud-consul/pom.xml
+++ b/spring-cloud/spring-cloud-consul/pom.xml
@@ -29,13 +29,14 @@
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
-            <version>1.5.10.RELEASE</version>
+            <version>${spring-boot-starter-test.version}</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
 
     <properties>
         <spring-cloud-starter-consul.version>1.3.0.RELEASE</spring-cloud-starter-consul.version>
+        <spring-boot-starter-test.version>1.5.10.RELEASE</spring-boot-starter-test.version>
     </properties>
 
 </project>
diff --git a/spring-cloud/spring-cloud-kubernetes-2/client-service/pom.xml b/spring-cloud/spring-cloud-kubernetes-2/client-service/pom.xml
index 908a545242..718e445e0c 100644
--- a/spring-cloud/spring-cloud-kubernetes-2/client-service/pom.xml
+++ b/spring-cloud/spring-cloud-kubernetes-2/client-service/pom.xml
@@ -12,12 +12,6 @@
         <version>1.0-SNAPSHOT</version>
     </parent>
 
-    <properties>
-        <java.version>1.8</java.version>
-        <spring-cloud-dependencies.version>Finchley.SR2</spring-cloud-dependencies.version>
-        <spring.cloud.k8s.version>1.0.0.RELEASE</spring.cloud.k8s.version>
-    </properties>
-
     <dependencyManagement>
         <dependencies>
             <dependency>
@@ -93,4 +87,10 @@
         </plugins>
     </build>
 
+    <properties>
+        <java.version>1.8</java.version>
+        <spring-cloud-dependencies.version>Finchley.SR2</spring-cloud-dependencies.version>
+        <spring.cloud.k8s.version>1.0.0.RELEASE</spring.cloud.k8s.version>
+    </properties>
+
 </project>
diff --git a/spring-cloud/spring-cloud-kubernetes-2/pom.xml b/spring-cloud/spring-cloud-kubernetes-2/pom.xml
index d501e8102f..c5681e8e7d 100644
--- a/spring-cloud/spring-cloud-kubernetes-2/pom.xml
+++ b/spring-cloud/spring-cloud-kubernetes-2/pom.xml
@@ -7,10 +7,11 @@
     <version>1.0-SNAPSHOT</version>
     <name>spring-cloud-kubernetes-2</name>
     <packaging>pom</packaging>
-
-    <properties>
-        <spring-boot.version>2.0.6.RELEASE</spring-boot.version>
-    </properties>
+    	
+    <modules>
+        <module>client-service</module>
+        <module>travel-agency-service</module>
+    </modules>
 
     <dependencyManagement>
         <dependencies>
@@ -23,10 +24,9 @@
             </dependency>
         </dependencies>
     </dependencyManagement>
-    	
-    <modules>
-        <module>client-service</module>
-        <module>travel-agency-service</module>
-    </modules>
+
+    <properties>
+        <spring-boot.version>2.0.6.RELEASE</spring-boot.version>
+    </properties>
 
 </project>
diff --git a/spring-cloud/spring-cloud-kubernetes-2/travel-agency-service/pom.xml b/spring-cloud/spring-cloud-kubernetes-2/travel-agency-service/pom.xml
index a375264533..fd5aa5f9d6 100755
--- a/spring-cloud/spring-cloud-kubernetes-2/travel-agency-service/pom.xml
+++ b/spring-cloud/spring-cloud-kubernetes-2/travel-agency-service/pom.xml
@@ -10,12 +10,6 @@
         <version>1.0-SNAPSHOT</version>
     </parent>
 
-    <properties>
-        <java.version>1.8</java.version>
-        <spring-cloud-dependencies.version>Finchley.SR2</spring-cloud-dependencies.version>
-    </properties>
-
-
     <dependencyManagement>
         <dependencies>
             <dependency>
@@ -73,4 +67,9 @@
         </plugins>
     </build>
 
+    <properties>
+        <java.version>1.8</java.version>
+        <spring-cloud-dependencies.version>Finchley.SR2</spring-cloud-dependencies.version>
+    </properties>
+
 </project>
\ No newline at end of file
diff --git a/spring-remoting/remoting-hessian-burlap/remoting-hessian-burlap-server/pom.xml b/spring-remoting/remoting-hessian-burlap/remoting-hessian-burlap-server/pom.xml
index 33b824442f..fa16a9a9b1 100644
--- a/spring-remoting/remoting-hessian-burlap/remoting-hessian-burlap-server/pom.xml
+++ b/spring-remoting/remoting-hessian-burlap/remoting-hessian-burlap-server/pom.xml
@@ -25,7 +25,12 @@
         <dependency>
             <groupId>com.caucho</groupId>
             <artifactId>hessian</artifactId>
-            <version>4.0.38</version>
+            <version>${hessian.version}</version>
         </dependency>
     </dependencies>
+
+    <properties>
+        <hessian.version>4.0.38</hessian.version>
+    </properties>
+
 </project>
\ No newline at end of file
diff --git a/twilio/pom.xml b/twilio/pom.xml
index 81fbf8ab20..266ac45c92 100644
--- a/twilio/pom.xml
+++ b/twilio/pom.xml
@@ -16,8 +16,12 @@
         <dependency>
             <groupId>com.twilio.sdk</groupId>
             <artifactId>twilio</artifactId>
-            <version>7.20.0</version>
+            <version>${twilio.version}</version>
         </dependency>
     </dependencies>
 
+    <properties>
+        <twilio.version>7.20.0</twilio.version>
+    </properties>
+
 </project>