diff --git a/ethereumj/README.md b/ethereum/README.md
similarity index 53%
rename from ethereumj/README.md
rename to ethereum/README.md
index d2e2753438..eb695e4bc3 100644
--- a/ethereumj/README.md
+++ b/ethereum/README.md
@@ -1,4 +1,6 @@
-## EthereumJ
+## Ethereum
 
 ### Relevant Articles:
 - [Introduction to EthereumJ](http://www.baeldung.com/ethereumj)
+- [Lightweight Web3](http://www.baeldung.com/lightweight-web3/)
+
diff --git a/ethereumj/.gitgnore b/ethereum/ethereumj/.gitgnore
similarity index 100%
rename from ethereumj/.gitgnore
rename to ethereum/ethereumj/.gitgnore
diff --git a/web3j/README.md b/ethereum/ethereumj/README.md
similarity index 53%
rename from web3j/README.md
rename to ethereum/ethereumj/README.md
index bc9909af25..eb695e4bc3 100644
--- a/web3j/README.md
+++ b/ethereum/ethereumj/README.md
@@ -1,4 +1,6 @@
-## Web3j
+## Ethereum
 
 ### Relevant Articles:
+- [Introduction to EthereumJ](http://www.baeldung.com/ethereumj)
 - [Lightweight Web3](http://www.baeldung.com/lightweight-web3/)
+
diff --git a/ethereumj/pom.xml b/ethereum/ethereumj/pom.xml
similarity index 59%
rename from ethereumj/pom.xml
rename to ethereum/ethereumj/pom.xml
index 8b6d3677c9..903e23bfda 100644
--- a/ethereumj/pom.xml
+++ b/ethereum/ethereumj/pom.xml
@@ -1,5 +1,7 @@
 <?xml version="1.0"?>
-<project 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" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+<project
+        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" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.baeldung.ethereumj</groupId>
     <artifactId>ethereumj</artifactId>
@@ -11,9 +13,18 @@
         <artifactId>parent-boot-5</artifactId>
         <groupId>com.baeldung</groupId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../parent-boot-5</relativePath>
+        <relativePath>../../parent-boot-5</relativePath>
     </parent>
 
+     <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <java.version>1.8</java.version>
+        <tomcat.version>8.5.4</tomcat.version>
+        <ethereumj-core.version>1.5.0-RELEASE</ethereumj-core.version>
+        <web3j.core.version>3.3.1</web3j.core.version>
+        <jackson-databind.version>2.5.0</jackson-databind.version>
+    </properties>
+
     <repositories>
         <repository>
             <id>Ethereum</id>
@@ -23,7 +34,6 @@
     </repositories>
 
     <dependencies>
-
         <!-- Spring Boot Dependencies -->
         <dependency>
             <groupId>org.springframework.boot</groupId>
@@ -33,28 +43,24 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-tomcat</artifactId>
         </dependency>
-
         <!-- Unit Testing -->
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
-
         <!-- Ethereum -->
         <dependency>
             <groupId>org.ethereum</groupId>
             <artifactId>ethereumj-core</artifactId>
-            <version>1.5.0-RELEASE</version>
+            <version>${ethereumj-core.version}</version>
         </dependency>
-
         <!-- Web3j -->
         <dependency>
             <groupId>org.web3j</groupId>
             <artifactId>core</artifactId>
-            <version>3.3.1</version>
+            <version>${web3j.core.version}</version>
         </dependency>
-
         <!-- JSTL/JSP -->
         <dependency>
             <groupId>javax.servlet</groupId>
@@ -63,12 +69,20 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.5.0</version>
+            <version>${jackson-databind.version}</version>
         </dependency>
     </dependencies>
 
     <build>
         <plugins>
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.1</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
@@ -77,40 +91,4 @@
         <finalName>ethereumj</finalName>
     </build>
 
-    <profiles>
-        <profile>
-            <id>integration</id>
-            <build>
-                <plugins>
-                    <plugin>
-                        <groupId>org.apache.maven.plugins</groupId>
-                        <artifactId>maven-surefire-plugin</artifactId>
-                        <executions>
-                            <execution>
-                                <phase>integration-test</phase>
-                                <goals>
-                                    <goal>test</goal>
-                                </goals>
-                                <configuration>
-                                    <excludes>
-                                        <exclude>none</exclude>
-                                    </excludes>
-                                    <includes>
-                                        <include>*/EthControllerTestOne.java</include>
-                                    </includes>
-                                </configuration>
-                            </execution>
-                        </executions>
-                    </plugin>
-                </plugins>
-            </build>
-        </profile>
-    </profiles>
-
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <java.version>1.8</java.version>
-        <tomcat.version>8.5.4</tomcat.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/ethereumj/src/main/java/com/baeldung/ethereumj/ApplicationMain.java b/ethereum/ethereumj/src/main/java/com/baeldung/ethereumj/ApplicationMain.java
similarity index 100%
rename from ethereumj/src/main/java/com/baeldung/ethereumj/ApplicationMain.java
rename to ethereum/ethereumj/src/main/java/com/baeldung/ethereumj/ApplicationMain.java
diff --git a/ethereumj/src/main/java/com/baeldung/ethereumj/Constants.java b/ethereum/ethereumj/src/main/java/com/baeldung/ethereumj/Constants.java
similarity index 100%
rename from ethereumj/src/main/java/com/baeldung/ethereumj/Constants.java
rename to ethereum/ethereumj/src/main/java/com/baeldung/ethereumj/Constants.java
diff --git a/ethereumj/src/main/java/com/baeldung/ethereumj/beans/EthBean.java b/ethereum/ethereumj/src/main/java/com/baeldung/ethereumj/beans/EthBean.java
similarity index 100%
rename from ethereumj/src/main/java/com/baeldung/ethereumj/beans/EthBean.java
rename to ethereum/ethereumj/src/main/java/com/baeldung/ethereumj/beans/EthBean.java
diff --git a/ethereumj/src/main/java/com/baeldung/ethereumj/config/EthConfig.java b/ethereum/ethereumj/src/main/java/com/baeldung/ethereumj/config/EthConfig.java
similarity index 100%
rename from ethereumj/src/main/java/com/baeldung/ethereumj/config/EthConfig.java
rename to ethereum/ethereumj/src/main/java/com/baeldung/ethereumj/config/EthConfig.java
diff --git a/ethereumj/src/main/java/com/baeldung/ethereumj/controllers/EthController.java b/ethereum/ethereumj/src/main/java/com/baeldung/ethereumj/controllers/EthController.java
similarity index 100%
rename from ethereumj/src/main/java/com/baeldung/ethereumj/controllers/EthController.java
rename to ethereum/ethereumj/src/main/java/com/baeldung/ethereumj/controllers/EthController.java
diff --git a/ethereumj/src/main/java/com/baeldung/ethereumj/listeners/EthListener.java b/ethereum/ethereumj/src/main/java/com/baeldung/ethereumj/listeners/EthListener.java
similarity index 100%
rename from ethereumj/src/main/java/com/baeldung/ethereumj/listeners/EthListener.java
rename to ethereum/ethereumj/src/main/java/com/baeldung/ethereumj/listeners/EthListener.java
diff --git a/ethereumj/src/main/java/com/baeldung/ethereumj/transfer/EthResponse.java b/ethereum/ethereumj/src/main/java/com/baeldung/ethereumj/transfer/EthResponse.java
similarity index 100%
rename from ethereumj/src/main/java/com/baeldung/ethereumj/transfer/EthResponse.java
rename to ethereum/ethereumj/src/main/java/com/baeldung/ethereumj/transfer/EthResponse.java
diff --git a/ethereumj/src/main/java/com/baeldung/web3j/Template.java b/ethereum/ethereumj/src/main/java/com/baeldung/web3j/Template.java
similarity index 100%
rename from ethereumj/src/main/java/com/baeldung/web3j/Template.java
rename to ethereum/ethereumj/src/main/java/com/baeldung/web3j/Template.java
diff --git a/ethereumj/src/main/java/com/baeldung/web3j/contracts/Greeting.java b/ethereum/ethereumj/src/main/java/com/baeldung/web3j/contracts/Greeting.java
similarity index 100%
rename from ethereumj/src/main/java/com/baeldung/web3j/contracts/Greeting.java
rename to ethereum/ethereumj/src/main/java/com/baeldung/web3j/contracts/Greeting.java
diff --git a/ethereumj/src/main/resources/application.properties b/ethereum/ethereumj/src/main/resources/application.properties
similarity index 100%
rename from ethereumj/src/main/resources/application.properties
rename to ethereum/ethereumj/src/main/resources/application.properties
diff --git a/ethereumj/src/main/resources/solidity/Greeting.sol b/ethereum/ethereumj/src/main/resources/solidity/Greeting.sol
similarity index 100%
rename from ethereumj/src/main/resources/solidity/Greeting.sol
rename to ethereum/ethereumj/src/main/resources/solidity/Greeting.sol
diff --git a/ethereumj/src/main/resources/solidity/build/Greeting.abi b/ethereum/ethereumj/src/main/resources/solidity/build/Greeting.abi
similarity index 100%
rename from ethereumj/src/main/resources/solidity/build/Greeting.abi
rename to ethereum/ethereumj/src/main/resources/solidity/build/Greeting.abi
diff --git a/ethereumj/src/main/resources/solidity/build/Greeting.bin b/ethereum/ethereumj/src/main/resources/solidity/build/Greeting.bin
similarity index 100%
rename from ethereumj/src/main/resources/solidity/build/Greeting.bin
rename to ethereum/ethereumj/src/main/resources/solidity/build/Greeting.bin
diff --git a/ethereumj/src/test/java/com/baeldung/ethereumj/controllers/EthControllerLiveTest.java b/ethereum/ethereumj/src/test/java/com/baeldung/ethereumj/controllers/EthControllerLiveTest.java
similarity index 100%
rename from ethereumj/src/test/java/com/baeldung/ethereumj/controllers/EthControllerLiveTest.java
rename to ethereum/ethereumj/src/test/java/com/baeldung/ethereumj/controllers/EthControllerLiveTest.java
diff --git a/ethereum/pom.xml b/ethereum/pom.xml
new file mode 100644
index 0000000000..7737348771
--- /dev/null
+++ b/ethereum/pom.xml
@@ -0,0 +1,9 @@
+<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.ethereum</groupId>
+    <artifactId>ethereum</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>ethereum</name>
+
+</project>
diff --git a/web3j/.gitignore b/ethereum/web3j/.gitignore
similarity index 100%
rename from web3j/.gitignore
rename to ethereum/web3j/.gitignore
diff --git a/web3j/dev_ganache/README.md b/ethereum/web3j/dev_ganache/README.md
similarity index 100%
rename from web3j/dev_ganache/README.md
rename to ethereum/web3j/dev_ganache/README.md
diff --git a/web3j/dev_truffle/README.md b/ethereum/web3j/dev_truffle/README.md
similarity index 100%
rename from web3j/dev_truffle/README.md
rename to ethereum/web3j/dev_truffle/README.md
diff --git a/web3j/dev_truffle/build/contracts/ConvertLib.json b/ethereum/web3j/dev_truffle/build/contracts/ConvertLib.json
similarity index 100%
rename from web3j/dev_truffle/build/contracts/ConvertLib.json
rename to ethereum/web3j/dev_truffle/build/contracts/ConvertLib.json
diff --git a/web3j/dev_truffle/build/contracts/Example.json b/ethereum/web3j/dev_truffle/build/contracts/Example.json
similarity index 100%
rename from web3j/dev_truffle/build/contracts/Example.json
rename to ethereum/web3j/dev_truffle/build/contracts/Example.json
diff --git a/web3j/dev_truffle/build/contracts/Migrations.json b/ethereum/web3j/dev_truffle/build/contracts/Migrations.json
similarity index 100%
rename from web3j/dev_truffle/build/contracts/Migrations.json
rename to ethereum/web3j/dev_truffle/build/contracts/Migrations.json
diff --git a/web3j/dev_truffle/contracts/ConvertLib.sol b/ethereum/web3j/dev_truffle/contracts/ConvertLib.sol
similarity index 100%
rename from web3j/dev_truffle/contracts/ConvertLib.sol
rename to ethereum/web3j/dev_truffle/contracts/ConvertLib.sol
diff --git a/web3j/dev_truffle/contracts/Example.sol b/ethereum/web3j/dev_truffle/contracts/Example.sol
similarity index 100%
rename from web3j/dev_truffle/contracts/Example.sol
rename to ethereum/web3j/dev_truffle/contracts/Example.sol
diff --git a/web3j/dev_truffle/contracts/Migrations.sol b/ethereum/web3j/dev_truffle/contracts/Migrations.sol
similarity index 100%
rename from web3j/dev_truffle/contracts/Migrations.sol
rename to ethereum/web3j/dev_truffle/contracts/Migrations.sol
diff --git a/web3j/dev_truffle/migrations/1_initial_migration.js b/ethereum/web3j/dev_truffle/migrations/1_initial_migration.js
similarity index 100%
rename from web3j/dev_truffle/migrations/1_initial_migration.js
rename to ethereum/web3j/dev_truffle/migrations/1_initial_migration.js
diff --git a/web3j/dev_truffle/migrations/2_deploy_contracts.js b/ethereum/web3j/dev_truffle/migrations/2_deploy_contracts.js
similarity index 100%
rename from web3j/dev_truffle/migrations/2_deploy_contracts.js
rename to ethereum/web3j/dev_truffle/migrations/2_deploy_contracts.js
diff --git a/web3j/dev_truffle/truffle.js b/ethereum/web3j/dev_truffle/truffle.js
similarity index 100%
rename from web3j/dev_truffle/truffle.js
rename to ethereum/web3j/dev_truffle/truffle.js
diff --git a/web3j/pom.xml b/ethereum/web3j/pom.xml
similarity index 99%
rename from web3j/pom.xml
rename to ethereum/web3j/pom.xml
index 7d2eea9047..b65f120218 100644
--- a/web3j/pom.xml
+++ b/ethereum/web3j/pom.xml
@@ -8,7 +8,7 @@
     <version>1.0.0</version>
     <name>web3j</name>
 
-     <properties>
+    <properties>
         <hamcrest.version>1.3</hamcrest.version>
         <jackson.version>2.9.3</jackson.version>
         <javax-jsp.version>2.3.1</javax-jsp.version>
diff --git a/web3j/src/main/java/com/baeldung/web3j/config/AppConfig.java b/ethereum/web3j/src/main/java/com/baeldung/web3j/config/AppConfig.java
similarity index 100%
rename from web3j/src/main/java/com/baeldung/web3j/config/AppConfig.java
rename to ethereum/web3j/src/main/java/com/baeldung/web3j/config/AppConfig.java
diff --git a/web3j/src/main/java/com/baeldung/web3j/config/WebAppInitializer.java b/ethereum/web3j/src/main/java/com/baeldung/web3j/config/WebAppInitializer.java
similarity index 100%
rename from web3j/src/main/java/com/baeldung/web3j/config/WebAppInitializer.java
rename to ethereum/web3j/src/main/java/com/baeldung/web3j/config/WebAppInitializer.java
diff --git a/web3j/src/main/java/com/baeldung/web3j/constants/Constants.java b/ethereum/web3j/src/main/java/com/baeldung/web3j/constants/Constants.java
similarity index 100%
rename from web3j/src/main/java/com/baeldung/web3j/constants/Constants.java
rename to ethereum/web3j/src/main/java/com/baeldung/web3j/constants/Constants.java
diff --git a/web3j/src/main/java/com/baeldung/web3j/contracts/Example.java b/ethereum/web3j/src/main/java/com/baeldung/web3j/contracts/Example.java
similarity index 100%
rename from web3j/src/main/java/com/baeldung/web3j/contracts/Example.java
rename to ethereum/web3j/src/main/java/com/baeldung/web3j/contracts/Example.java
diff --git a/web3j/src/main/java/com/baeldung/web3j/controllers/EthereumRestController.java b/ethereum/web3j/src/main/java/com/baeldung/web3j/controllers/EthereumRestController.java
similarity index 100%
rename from web3j/src/main/java/com/baeldung/web3j/controllers/EthereumRestController.java
rename to ethereum/web3j/src/main/java/com/baeldung/web3j/controllers/EthereumRestController.java
diff --git a/web3j/src/main/java/com/baeldung/web3j/helpers/TimeHelper.java b/ethereum/web3j/src/main/java/com/baeldung/web3j/helpers/TimeHelper.java
similarity index 100%
rename from web3j/src/main/java/com/baeldung/web3j/helpers/TimeHelper.java
rename to ethereum/web3j/src/main/java/com/baeldung/web3j/helpers/TimeHelper.java
diff --git a/web3j/src/main/java/com/baeldung/web3j/services/Web3Service.java b/ethereum/web3j/src/main/java/com/baeldung/web3j/services/Web3Service.java
similarity index 90%
rename from web3j/src/main/java/com/baeldung/web3j/services/Web3Service.java
rename to ethereum/web3j/src/main/java/com/baeldung/web3j/services/Web3Service.java
index 790210d557..c943ee4006 100644
--- a/web3j/src/main/java/com/baeldung/web3j/services/Web3Service.java
+++ b/ethereum/web3j/src/main/java/com/baeldung/web3j/services/Web3Service.java
@@ -47,51 +47,46 @@ public class Web3Service {
         return "0x" + binary;
     }
 
-    @Async
     public CompletableFuture<EthBlockNumber> getBlockNumber() {
         EthBlockNumber result = new EthBlockNumber();
         try {
-            this.web3j.ethBlockNumber().sendAsync().thenApply(r -> r.getBlockNumber());
+            result = this.web3j.ethBlockNumber().sendAsync().get();
         } catch (Exception ex) {
             System.out.println(GENERIC_EXCEPTION);
         }
         return CompletableFuture.completedFuture(result);
     }
 
-    @Async
     public CompletableFuture<EthAccounts> getEthAccounts() {
         EthAccounts result = new EthAccounts();
         try {
-            this.web3j.ethAccounts().sendAsync().thenApply(r -> r.getAccounts());
+             result = this.web3j.ethAccounts().sendAsync().get();
         } catch (Exception ex) {
             System.out.println(GENERIC_EXCEPTION);
         }
         return CompletableFuture.completedFuture(result);
     }
 
-    @Async
     public CompletableFuture<EthGetTransactionCount> getTransactionCount() {
         EthGetTransactionCount result = new EthGetTransactionCount();
         try {
-            this.web3j.ethGetTransactionCount(DEFAULT_ADDRESS, DefaultBlockParameter.valueOf("latest")).sendAsync().thenApply(r -> r.getTransactionCount());
+             result = this.web3j.ethGetTransactionCount(DEFAULT_ADDRESS, DefaultBlockParameter.valueOf("latest")).sendAsync().get();
         } catch (Exception ex) {
             System.out.println(GENERIC_EXCEPTION);
         }
         return CompletableFuture.completedFuture(result);
     }
 
-    @Async
     public CompletableFuture<EthGetBalance> getEthBalance() {
         EthGetBalance result = new EthGetBalance();
         try {
-            this.web3j.ethGetBalance(DEFAULT_ADDRESS, DefaultBlockParameter.valueOf("latest")).sendAsync().thenApply(r -> r.getBalance());
+            result = this.web3j.ethGetBalance(DEFAULT_ADDRESS, DefaultBlockParameter.valueOf("latest")).sendAsync().get();
         } catch (Exception ex) {
             System.out.println(GENERIC_EXCEPTION);
         }
         return CompletableFuture.completedFuture(result);
     }
 
-    @Async
     public CompletableFuture<String> fromScratchContractExample() {
 
         String contractAddress = "";
diff --git a/web3j/src/main/java/com/baeldung/web3j/transfers/ResponseTransfer.java b/ethereum/web3j/src/main/java/com/baeldung/web3j/transfers/ResponseTransfer.java
similarity index 100%
rename from web3j/src/main/java/com/baeldung/web3j/transfers/ResponseTransfer.java
rename to ethereum/web3j/src/main/java/com/baeldung/web3j/transfers/ResponseTransfer.java
diff --git a/web3j/src/main/webapp/WEB-INF/.gitkeep b/ethereum/web3j/src/main/webapp/WEB-INF/.gitkeep
similarity index 100%
rename from web3j/src/main/webapp/WEB-INF/.gitkeep
rename to ethereum/web3j/src/main/webapp/WEB-INF/.gitkeep
diff --git a/web3j/src/main/webapp/resources/.gitkeep b/ethereum/web3j/src/main/webapp/resources/.gitkeep
similarity index 100%
rename from web3j/src/main/webapp/resources/.gitkeep
rename to ethereum/web3j/src/main/webapp/resources/.gitkeep
diff --git a/web3j/src/test/com/baeldung/web3j/controllers/EthereumRestControllerIntegrationTest.java b/ethereum/web3j/src/test/com/baeldung/web3j/controllers/EthereumRestControllerIntegrationTest.java
similarity index 100%
rename from web3j/src/test/com/baeldung/web3j/controllers/EthereumRestControllerIntegrationTest.java
rename to ethereum/web3j/src/test/com/baeldung/web3j/controllers/EthereumRestControllerIntegrationTest.java
diff --git a/web3j/src/test/com/baeldung/web3j/controllers/EthereumRestControllerUnitTest.java b/ethereum/web3j/src/test/com/baeldung/web3j/controllers/EthereumRestControllerUnitTest.java
similarity index 100%
rename from web3j/src/test/com/baeldung/web3j/controllers/EthereumRestControllerUnitTest.java
rename to ethereum/web3j/src/test/com/baeldung/web3j/controllers/EthereumRestControllerUnitTest.java
diff --git a/web3j/src/test/com/baeldung/web3j/services/EthereumContractUnitTest.java b/ethereum/web3j/src/test/com/baeldung/web3j/services/EthereumContractUnitTest.java
similarity index 100%
rename from web3j/src/test/com/baeldung/web3j/services/EthereumContractUnitTest.java
rename to ethereum/web3j/src/test/com/baeldung/web3j/services/EthereumContractUnitTest.java
diff --git a/pom.xml b/pom.xml
index 750c95679c..72c24aee76 100644
--- a/pom.xml
+++ b/pom.xml
@@ -73,8 +73,7 @@
         <module>deltaspike</module>
         <module>dozer</module>
 
-        <module>ethereumj</module>
-        <module>web3j</module>
+        <module>ethereum</module>
 
         <!--<module>ejb</module>-->
 
diff --git a/xml/pom.xml b/xml/pom.xml
index c001c264d2..166cb6dd4e 100644
--- a/xml/pom.xml
+++ b/xml/pom.xml
@@ -285,8 +285,6 @@
         <commons-lang.version>2.4</commons-lang.version>
         <java-version>1.8</java-version>
 
-
-
         <!-- maven plugins -->
         <maven-jibx-plugin.version>1.3.1</maven-jibx-plugin.version>