package openjdk-9-jdk (not installed) failed to install/upgrade: Versuch, »/usr/lib/jvm/java-9-openjdk-amd64/include/linux/jawt_md.h« zu überschreiben, welches auch in Paket openjdk-9-jdk-headless:amd64 9~b114-0ubuntu1 ist

[starkus]

sorry, not sure. UFW enabled and blocking upnp test connection while error occurred.

EDIT:
Sorry again. I installed and uninstalled some jre packages. First with Firefox apt-install solution.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: openjdk-9-jdk (not installed)
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Fri Aug 5 22:12:45 2016
ErrorMessage: Versuch, »/usr/lib/jvm/java-9-openjdk-amd64/include/linux/jawt_md.h« zu überschreiben, welches auch in Paket openjdk-9-jdk-headless:amd64 9~b114-0ubuntu1 ist
InstallationDate: Installed on 2016-04-15 (112 days ago)
InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 (20150422)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: openjdk-9
Title: package openjdk-9-jdk (not installed) failed to install/upgrade: Versuch, »/usr/lib/jvm/java-9-openjdk-amd64/include/linux/jawt_md.h« zu überschreiben, welches auch in Paket openjdk-9-jdk-headless:amd64 9~b114-0ubuntu1 ist
UpgradeStatus: Upgraded to xenial on 2016-07-26 (10 days ago)