Support UBI 9 Java 25 images

[gsmet]

Fixes #50535

[gsmet]

@zakkak I would like your blessing on this one: by adding the full support for Java 25, that means that projects created with Java 25 will target Java 25 and so we need the Mandrel builder to support Java 25. Until now, we always had only one builder for all Java versions and I think that's probably best.

Now the big question: are there any remaining issues using Mandrel for Java 25 or were all the issues sorted out? If they are not sorted out, can we live with them or are they too annoying?

[gsmet]

/cc @Sanne

[github-actions]

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[gsmet]

@zakkak so NativeAgentIT was failing because the agent now generates a reachability-metadata.json (see #50294). I worked around the issue. The patch might not be in its final form as I have seen you thought of just dropping the previous support but I'm not entirely sure which parameter you would need to pass to the agent for Java < 25 to generate the new format.

With the last commit I pushed, the build completes but something is incorrect:

2025-12-22 17:40:58,632 gsmet /home/gsmet/git/quarkus/integration-tests/maven/target/test-classes/projects/native-agent-integration/target/acme-1.0-SNAPSHOT-runner[407406] ERROR [io.qua.run.Application] (main) Failed to start application: java.lang.RuntimeException: Failed to start quarkus
        at io.quarkus.runner.ApplicationImpl.doStart(Unknown Source)
        at io.quarkus.runtime.Application.start(Application.java:105)
        at io.quarkus.runtime.ApplicationLifecycleManager.run(ApplicationLifecycleManager.java:119)
        at io.quarkus.runtime.Quarkus.run(Quarkus.java:78)
        at io.quarkus.runtime.Quarkus.run(Quarkus.java:50)
        at io.quarkus.runtime.Quarkus.run(Quarkus.java:142)
        at io.quarkus.runner.GeneratedMain.main(Unknown Source)
Caused by: java.lang.RuntimeException: Unable to start HTTP server
        at io.quarkus.vertx.http.runtime.VertxHttpRecorder.doServerStart(VertxHttpRecorder.java:984)
        at io.quarkus.vertx.http.runtime.VertxHttpRecorder.startServer(VertxHttpRecorder.java:373)
        at io.quarkus.runner.recorded.VertxHttpProcessor$openSocket1873327713.deploy_0(Unknown Source)
        at io.quarkus.runner.recorded.VertxHttpProcessor$openSocket1873327713.deploy(Unknown Source)
        ... 7 more
Caused by: java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError: Could not initialize class io.netty.util.internal.PlatformDependent
        at [email protected]/java.util.concurrent.CompletableFuture.wrapInExecutionException(CompletableFuture.java:345)
        at [email protected]/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:440)
        at [email protected]/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2094)
        at io.quarkus.vertx.http.runtime.VertxHttpRecorder.doServerStart(VertxHttpRecorder.java:901)
        ... 10 more
Caused by: java.lang.NoClassDefFoundError: Could not initialize class io.netty.util.internal.PlatformDependent
        at io.netty.channel.group.DefaultChannelGroup.<init>(DefaultChannelGroup.java:48)
        at io.netty.channel.group.DefaultChannelGroup.<init>(DefaultChannelGroup.java:84)
        at io.vertx.core.net.impl.ServerChannelLoadBalancer.<init>(ServerChannelLoadBalancer.java:43)
        at io.vertx.core.net.impl.TCPServerBase.listen(TCPServerBase.java:230)
        at io.vertx.core.net.impl.TCPServerBase.bind(TCPServerBase.java:183)
        at io.vertx.core.http.impl.HttpServerImpl.listen(HttpServerImpl.java:190)
        at io.vertx.core.http.HttpServer.listen(HttpServer.java:228)
        at io.vertx.core.http.HttpServer.listen(HttpServer.java:241)
        at io.quarkus.vertx.http.runtime.VertxHttpRecorder$WebDeploymentVerticle.setupTcpHttpServer(VertxHttpRecorder.java:1351)
        at io.quarkus.vertx.http.runtime.VertxHttpRecorder$WebDeploymentVerticle.start(VertxHttpRecorder.java:1265)
        at io.vertx.core.impl.DeploymentManager.lambda$doDeploy$5(DeploymentManager.java:210)
        at io.vertx.core.impl.ContextInternal.dispatch(ContextInternal.java:270)
        at io.vertx.core.impl.ContextInternal.dispatch(ContextInternal.java:252)
        at io.vertx.core.impl.ContextInternal.lambda$runOnContext$0(ContextInternal.java:50)
        at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173)
        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166)
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:569)
        at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:998)
        at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
        at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
        at [email protected]/java.lang.Thread.runWith(Thread.java:1487)
        at [email protected]/java.lang.Thread.run(Thread.java:1474)
        at org.graalvm.nativeimage.builder/com.oracle.svm.core.thread.PlatformThreads.threadStartRoutine(PlatformThreads.java:832)
        at org.graalvm.nativeimage.builder/com.oracle.svm.core.thread.PlatformThreads.threadStartRoutine(PlatformThreads.java:808)

I wonder if somehow you need to fully embrace reachability-metadata.json if you have it in the config dir but I haven't verifier this hypothesis.

I thought about starting the work on #41016 but I'm not sure what's the status of this and if you started working on it already. It's going to be cumbersome so better not do it twice :).

[gsmet]

Apparently, the issue is related to #51667 (comment) .