Nicolas Roduit

I thought that the Java API distributed by OpenCV was compatible with Java 8 but I see that in the packages of release 4.7.0, the minimal version is Java 11....

I understand the intention of not wanting to duplicate the code, but the problem resides elsewhere. In your proposal, there will be a compilation error with JDK 18 and higher...

@AlexanderSchuetz97 your explanation corresponds exactly to the implementation of java.lang.ref.Cleaner available since Java 9. I therefore implemented CustomCleaner, which is similar to java.lang.ref.Cleaner, and removed all finalize() methods. As described...

Remove Java explicit version in Ant which seems to be passed by command with OPENCV_JAVA_SOURCE_VERSION and OPENCV_JAVA_TARGET_VERSION Note also that I've separated class and source into 2 separate jars. The...

@asmorkalov, in Android test, the minimal [API version is 21](https://github.com/opencv/opencv/blob/6694d87a23886182900cdb49876d98989cc6e16d/platforms/android/ndk-18-api-level-21.config.py), it must be API 26 to support Java 8 lambda. API 26 is Android 8 which has no security update...

Any feedback on this error? @asmorkalov

Any news on this problem? Shouldn't API compatibility evolve with version 5? API 21 (8.0 Oreo) has been [end-of-life for over 5 years ](https://endoflife.date/android)and no longer receives security patches.

@asmorkalov Can you review