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unimined / JvmDowngrader

Downgrades modern java bytecode to older versions. at either compile or runtime.
https://jvmdowngrader.wagyourtail.xyz
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`NoClassDefFoundError` #11

Closed Ledmington closed 1 month ago

Ledmington commented 1 month ago

Steps to reproduce:

git clone https://github.com/Ledmington/emu.git
cd emu
./gradlew readelf:fatjar
cp readelf/build/libs/emu-readelf.jar .
java21 -jar jvmdowngrader-0.8.4-all.jar -c 52 downgrade -t emu-readelf.jar output.jar
java8 -jar output.jar

The output is this:

Exception in thread "main" java.lang.NoClassDefFoundError: xyz/wagyourtail/jvmdg/j11/stub/java_base/J_N_F_Path
        at com.ledmington.readelf.Main.main(Main.java:266)
Caused by: java.lang.ClassNotFoundException: xyz.wagyourtail.jvmdg.j11.stub.java_base.J_N_F_Path
        at java.net.URLClassLoader.findClass(URLClassLoader.java:387)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        ... 1 more

It seems that the error is here.

P.S.: I really like your work and want to use it in this project of mine, so I will create more issues as I go through this process.

wagyourtail commented 1 month ago

see pinned / I commented on your other issue