Amend pom.xml

pom.xml

@@ -29,8 +29,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.3</version>
                 <configuration>
-                    <source>1.7</source>
-                    <target>1.7</target>
+                    <source>9</source>
+                    <target>9</target>
                     <useSystemClassLoader>false</useSystemClassLoader>
                 </configuration>
             </plugin>
@@ -56,15 +56,6 @@
                     </execution>
                 </executions>
             </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <configuration>
-                    <source>9</source>
-                    <target>9</target>
-                </configuration>
-            </plugin>
-
         </plugins>
     </build>
 </project>