Changed from 1.9 to 1.6

pom.xml

@@ -30,8 +30,8 @@
               <artifactId>maven-compiler-plugin</artifactId>
               <version>3.5</version>
               <configuration>
-                <source>1.9</source>
-                <target>1.9</target>
+                <source>1.6</source>
+                <target>1.6</target>
               </configuration>
             </plugin>
         </plugins>