diff --git a/web/documentserver-example/java-spring/pom.xml b/web/documentserver-example/java-spring/pom.xml
index f59d7fd4..416b0cd3 100644
--- a/web/documentserver-example/java-spring/pom.xml
+++ b/web/documentserver-example/java-spring/pom.xml
@@ -83,6 +83,31 @@
 				<groupId>org.springframework.boot</groupId>
 				<artifactId>spring-boot-maven-plugin</artifactId>
 			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-checkstyle-plugin</artifactId>
+				<version>2.17</version>
+				<executions>
+					<execution>
+						<id>validate</id>
+						<phase>validate</phase>
+						<configuration>
+							<configLocation>google_checks.xml</configLocation>
+							<encoding>UTF-8</encoding>
+							<failsOnError>true</failsOnError>
+							<failOnViolation>true</failOnViolation>
+							<logViolationsToConsole>true</logViolationsToConsole>
+							<violationSeverity>warning</violationSeverity>
+							<consoleOutput>true</consoleOutput>
+							<includeTestSourceDirectory>true
+							</includeTestSourceDirectory>
+						</configuration>
+						<goals>
+							<goal>check</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
 		</plugins>
 	</build>
 </project>
diff --git a/web/documentserver-example/java/pom.xml b/web/documentserver-example/java/pom.xml
index 784172bb..2b7e2718 100644
--- a/web/documentserver-example/java/pom.xml
+++ b/web/documentserver-example/java/pom.xml
@@ -85,6 +85,31 @@
                     </execution>
                 </executions>
             </plugin>
+            <plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-checkstyle-plugin</artifactId>
+				<version>2.17</version>
+				<executions>
+					<execution>
+						<id>validate</id>
+						<phase>validate</phase>
+						<configuration>
+							<configLocation>google_checks.xml</configLocation>
+							<encoding>UTF-8</encoding>
+							<failsOnError>true</failsOnError>
+							<failOnViolation>true</failOnViolation>
+							<logViolationsToConsole>true</logViolationsToConsole>
+							<violationSeverity>warning</violationSeverity>
+							<consoleOutput>true</consoleOutput>
+							<includeTestSourceDirectory>true
+							</includeTestSourceDirectory>
+						</configuration>
+						<goals>
+							<goal>check</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
         </plugins>
     </build>