openjdk 8 support

[barracuda156]

README states that ripme “requires Java 17 or later”. Does that imply it is impossible to run with an earlier JDK versions or just that it is not tested and actively supported? Looks like JDK 8 was supported earlier.

[iqqu]

Java language features that were introduced after JDK 8 are in use, so it won't compile or run with JDK 8. Sometime this year, I hope to upgrade the minimum required Java version to JDK 21, which is the current LTS release.

But I have good news: it is very easy to download and extract the latest OpenJDK to its own isolated directory if your OS doesn't package the latest version in its repositories:

1. Go to https://adoptium.net/ and click the Download button on the home page
2. Extract the downloaded archive to its own folder
3. Run ripme with the extracted JDK

Example:

$ cd ~/Downloads
$ ls -lh
-rw-r--r-- 1 iqqu users 135M Oct 18 11:00 OpenJDK25U-jdk_x64_linux_hotspot_25_36.tar.gz
-rw-r--r-- 1 iqqu users  39M Oct 18 10:00 ripme-2.1.20-14-5a3070e4.jar
$ tar -xf OpenJDK25U-jdk_x64_linux_hotspot_25_36.tar.gz
$ ls -lh
drwxr-xr-x 1 iqqu users   70 Sep  5 10:24 jdk-25+36/
-rw-r--r-- 1 iqqu users 135M Oct 18 11:00 OpenJDK25U-jdk_x64_linux_hotspot_25_36.tar.gz
-rw-r--r-- 1 iqqu users  39M Oct 18 10:00 ripme-2.1.20-14-5a3070e4.jar
$ ./jdk-25+36/bin/java -jar ripme-2.1.20-14-5a3070e4.jar

[barracuda156]

@iqqu Thank you for responding. Downloading is not an option when the said JDK does not exist (not sure it gonna compile for ppc even on Linux, and certainly not on Darwin), and I probably won’t ever get time to fix every JDK from 8 to 21, given its ridiculous bootstrap process.

[iqqu]

I've just noticed your work on MacOS PowerPC (I am impressed). It's unfortunate but such is the life of working on older platforms.
I think it would be easier to compile ripme with JDK8 and fix the errors until it works.
Right now, my focus is improving my sqlite PR and my ripme companion app, and I don't want to lose the nice features added after JDK8, but if you want, I could spend a few hours next week on a branch to downgrade the JDK. I would just try to get it working once for the current latest code.
Sorry for the bad news but I hope you understand.

[barracuda156]

but if you want, I could spend a few hours next week on a branch to downgrade the JDK

That would be awesome! (There is no urgency with this, of course, but it will be really nice to have it working eventually.)