Bug? [ApkSignerTool] - Package signing (debug key).

[T201016]

Hello,
compiling the source i get the following error code:

B4A Wersja: 10.70
Parsowanie kodu. (0.00s)
Java Wersja: 8
Building folders structure. (0.31s)
Kompilowanie kodu. (0.01s)
Kompilowanie kodu układu. (0.02s)
Organizowanie bibliotek. (0.00s)
(AndroidX SDK)
Compiling resources (1.67s)
Linking resources (3.61s)
Kompilowanie wygenerowanego kodu Java. (1.16s)
Konwertowanie kodu bajtowego - optymalizacja dex. (0.48s)
Kopiowanie zasobów bibliotek (0.93s)
ZipAlign file. (0.37s)
Podpisanie pakietu (klucz debugowania). Error
Error: A JNI error has occurred, please check your installation and try again
java.lang.UnsupportedClassVersionError: com/android/apksigner/ApkSignerTool has been compiled by a more recent version of the Java Runtime (class file version 53.0), 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:756)
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$1.run(URLClassLoader.java:363)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:601)
Exception in thread "main"

in the earlier version B4A 10.50 this compilation error did not occur. What this is about?

 

[T201016]

I used two versions of JDK 1.8.0.251 / 1.8.0.291. It doesn't change anything.

 

[DonManfred]

Use Java 11 downloaded from B4X-Page

 

[Erel]

That's strange. Many developers use Java 8.

Have you downloaded the SDK from: https://www.b4x.com/b4a.html ?

 

[T201016]

Welcome back,
I have not yet updated Android SDK + Required Resources, so far I could compile all applications on old sources without major problems.
When I update the Android SDK, I will let you know if it helped.
Thanks to everyone for now.

 

[T201016]

Hi,
It seems the Android SDK update helped. And I admit it works on both Java 8 and 11, although I prefer to work on Java 8. Moreover, everything works for me regardless of the JDK 1.8.0.251 or JDK 1.8.0.291

Also, the case seems to be closed
Thanks to everyone for your help.