Package: android-platform-tools-apksig Version: 0.8-2 Severity: important Dear Maintainer,
The apksigner binary from android-platform-tools-apksig 0.8-2 fails to run under OpenJDK 8 because it is not being targetted to java 8 level. Please note that if OpenJDK 11 is installed it will be used instead even if the system is set to use OpenJDK 8 binaries by default, so if trying to reproduce this make sure that *only* OpenJDK 8 runtime is installed. The error is: $ apksigner Error: A JNI error has occurred, please check your installation and try again Exception in thread "main" java.lang.UnsupportedClassVersionError: com/android/apksigner/ApkSignerTool has been compiled by a more recent version of the Java Runtime (class file version 55.0), 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:468) at java.net.URLClassLoader.access$100(URLClassLoader.java:74) at java.net.URLClassLoader$1.run(URLClassLoader.java:369) at java.net.URLClassLoader$1.run(URLClassLoader.java:363) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:362) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:495) The fix is to replace the '-source 8' entry with '--release 8' in the rules file. While adding '-target 8' would also work, using '--release' is better as it also sets the right '-bootclasspath' without much fuzz. Regards, Tiago -- System Information: Debian Release: buster/sid APT prefers disco APT policy: (500, 'disco'), (400, 'disco-proposed') Architecture: amd64 (x86_64) Kernel: Linux 4.19.0-13-generic (SMP w/4 CPU cores) Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled