Package: davmail Version: 4.9.0.2652-1 Severity: normal Just running it after installaion gives me
Error: A JNI error has occurred, please check your installation and try again Exception in thread "main" java.lang.UnsupportedClassVersionError: org/debian/javatools/CheckProperty has been compiled by a more recent version of the Java Runtime (class file version 54.0), this version of the Java Runtime only recognizes class file versions up to 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:763) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) at java.net.URLClassLoader.access$100(URLClassLoader.java:73) at java.net.URLClassLoader$1.run(URLClassLoader.java:368) at java.net.URLClassLoader$1.run(URLClassLoader.java:362) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:361) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:495) Error: A JNI error has occurred, please check your installation and try again Exception in thread "main" java.lang.UnsupportedClassVersionError: davmail/DavGateway has been compiled by a more recent version of the Java Runtime (class file version 54.0), this version of the Java Runtime only recognizes class file versions up to 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:763) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) at java.net.URLClassLoader.access$100(URLClassLoader.java:73) at java.net.URLClassLoader$1.run(URLClassLoader.java:368) at java.net.URLClassLoader$1.run(URLClassLoader.java:362) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:361) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:495) This is with "java" being /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java. -- System Information: Debian Release: buster/sid APT prefers testing APT policy: (990, 'testing'), (500, 'testing-debug'), (500, 'unstable'), (500, 'stable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 4.18.0-1-amd64 (SMP w/8 CPU cores) Locale: LANG=de_AT.UTF-8, LC_CTYPE=de_AT.UTF-8 (charmap=UTF-8), LANGUAGE=de_AT:de (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages davmail depends on: ii adduser 3.117 ii default-jre-headless [java10-runtime-headless] 2:1.10-68 ii jarwrapper 0.64 ii libcommons-codec-java 1.11-1 ii libcommons-httpclient-java 3.1-14 ii libcommons-logging-java 1.2-2 ii libhtmlcleaner-java 2.21-3 ii libjackrabbit-java 2.14.4-1 ii libjcifs-java 1.3.19-2 ii liblog4j1.2-java 1.2.17-8 ii libmail-java 1.6.1-3 ii libservlet3.1-java 8.5.34-1 ii libslf4j-java 1.7.25-3 ii libstax2-api-java 4.1-1 ii libwoodstox-java 1:5.1.0-2 ii logrotate 3.14.0-4 ii lsb-base 9.20170808 ii openjdk-10-jre-headless [java10-runtime-headless] 10.0.2+13-1 davmail recommends no packages. Versions of packages davmail suggests: ii libswt-cairo-gtk-4-jni 4.6.3-2 ii libswt-gtk-4-java 4.6.3-2 -- no debconf information --