I am getting proguard error with java21 proguard > ver 7.4
<java.version>21</java.version>
<proguard.maven.plugin.version>2.6.1</proguard.maven.plugin.version>
<proguard.version>7.4.1</proguard.version>
<proguard.version.core>9.1.1</proguard.version.core>
is reporting this error:
[proguard] error[1004]: proguard.evaluation.exception.IncompleteClassHierarchyException
[proguard] → org/springframework/boot/loader/jar/NestedJarFile : getInputStream(Lorg/springframework/boot/loader/zip/ZipContent$Entry;)Ljava/io/InputStream; at aload_0 v0
[proguard] Unexpected error while preverifying:
[proguard] Class = [org/springframework/boot/loader/jar/NestedJarFile]
[proguard] Method = [getInputStream(Lorg/springframework/boot/loader/zip/ZipContent$Entry;)Ljava/io/InputStream;]
[proguard] Exception = [proguard.evaluation.exception.IncompleteClassHierarchyException] (Can’t find common super class of [org.springframework.boot.loader.jar.NestedJarFile$JarEntryInputStream] (with 1 known super classes: org.springframework.boot .loader.jar.NestedJarFile$JarEntryInputStream and 1 unknown classes: java.io.InputStream) and [org.springframework.boot.loader.jar.NestedJarFile$JarEntryInflaterInputStream] (with 2 known super classes: org.springframework.boot.loader. jar.ZipInflaterInputStream, org.springframework.boot.loader.jar.NestedJarFile$JarEntryInflaterInputStream and 1 unknown classes: java.util.zip.InflaterInputStream))
[proguard] Unexpected error
[proguard] java.lang.RuntimeException:
[proguard]
[proguard] It appears you are missing some classes resulting in an incomplete class hierarchy,
[proguard] please refer to the troubleshooting page in the manual:
[proguard] ProGuard Manual: Troubleshooting | Guardsquare
[proguard]
[proguard] at proguard.ProGuard.execute(ProGuard.java:268) ~[proguard-base-7.4.1.jar:7.4.1]
[proguard] at proguard.ProGuard.main(ProGuard.java:648) ~[proguard-base-7.4.1.jar:7.4.1]
Please help me get sample configuration for spring boot 3 3.2.4
with java 21
====Update====
Even though I added jmods\java.base.jmod, now when I build it, I get an error message for the entire class, and the decompiler doesn’t see the class:
[proguard] Warning: class [BOOT-INF/classes/com/my/demo/repository/RoleRepository.class] unexpectedly contains class [com.my.demo.repository.RoleRepository]
[proguard] Warning: class [BOOT-INF/classes/com/my/demo/repository/UserRepository.class] unexpectedly contains class [com.my.demo.repository.UserRepository]
[proguard] Warning: class [BOOT-INF/classes/com/my/demo/service/AuthenticationService.class] unexpectedly contains class [com.my.demo.service.AuthenticationService]