Trying to build and package an Android Project results in the following error if I use JDK9:
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): ====09.10.2017 02:21:06====PERFORMING FINAL APK PACKAGE OPERATION================================================
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): UEDeployAndroid.MakeApk: Fixing minSdkVersion; NDK level above 19 requires minSdkVersion of 21 (arch=armv7)
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): UEDeployAndroid.CreateRunGradle:
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): Creating rungradle.bat to work around commandline length limit (using unused drive letter Z:)
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): UEDeployAndroid.RunCommandLineProgramWithException: Making .apk with Gradle...
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): WARNING: An illegal reflective access operation has occurred
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): WARNING: Illegal reflective access by org.gradle.internal.reflect.JavaMethod (file:/C:/Users/kevin/.gradle/wrapper/dists/gradle-2.14.1-all/8bnwg5hd3w55iofp58khbp6yv/gradle-2.14.1/lib/gradle-base-services-2.14.1.jar) to method java.lang.ClassLoader.getPackages()
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): WARNING: Please consider reporting this to the maintainers of org.gradle.internal.reflect.JavaMethod
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): WARNING: All illegal access operations will be denied in a future release
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): FAILURE: Build failed with an exception.
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): * Where:
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): Build file 'Z:\app\build.gradle' line: 1
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): * What went wrong:
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): A problem occurred evaluating project ':app'.
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): > javax/xml/bind/annotation/XmlSchema
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): * Try:
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): BUILD FAILED
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): Total time: 8.283 secs
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): Program.Main: ERROR: AutomationTool terminated with exception: ERROR: cmd.exe failed with args /c "A:\Projekte\Unreal-Engine-4-Projekte\SweeneyBird\Intermediate/Android/APK\gradle\rungradle.bat" :app:assembleDebug
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): Program.Main: AutomationTool exiting with ExitCode=1 (Error_Unknown)
UATHelper: Packaging (Android (Multi:ASTC,PVRTC,DXT,ATC,ETC2,ETC1)): BUILD FAILED
PackagingResults: Error: Unknown Error
Is there any way to package with Java 9?