allow jdk 11 build

Author: wumpz

nb-configuration.xml

@@ -19,5 +19,6 @@
         <com-junichi11-netbeans-changelf.lf-kind>LF</com-junichi11-netbeans-changelf.lf-kind>
         <com-junichi11-netbeans-changelf.use-global>false</com-junichi11-netbeans-changelf.use-global>
         <org-netbeans-modules-javascript2-requirejs.enabled>true</org-netbeans-modules-javascript2-requirejs.enabled>
+        <netbeans.hint.jdkPlatform>JDK_1.8</netbeans.hint.jdkPlatform>
     </properties>
 </project-shared-configuration>

pom.xml

@@ -87,8 +87,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.7.0</version>
                 <configuration>
-                    <source>11</source>
-                    <target>11</target>
+                    <source>1.8</source>
+                    <target>1.8</target>
                     <showWarnings>true</showWarnings>
                     <encoding>${project.build.sourceEncoding}</encoding>
                 </configuration>