Adding jdk9 profile

pom.xml

@@ -1161,5 +1161,25 @@
         <alpn.version>8.1.9.v20160720</alpn.version>
       </properties>
     </profile>
+    <profile>
+      <id>jdk9</id>
+      <activation>
+        <jdk>1.9</jdk>
+      </activation>
+      <build>
+        <plugins>
+          <plugin>
+            <artifactId>maven-compiler-plugin</artifactId>
+            <configuration>
+              <source>1.9</source>
+              <target>1.9</target>
+              <testSource>1.9</testSource>
+              <testTarget>1.9</testTarget>
+              <compilerArgument>-Xlint:all</compilerArgument>
+            </configuration>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
   </profiles>
 </project>