Hi,
the Lucene team installed JDK9 build 118 today and this failed our build during
some checks. The reason is that some classes are missing from the unnamed
module (standard Java 8 classpath-only application). Just try this test:
public class Test {
public static void main(String... args) throws Exception {
Class.forName("javax.xml.bind.DatatypeConverter");
}
}
$ javac Test.java
$ java Test
Exception in thread "main" java.lang.ClassNotFoundException:
javax.xml.bind.DatatypeConverter
at
jdk.internal.loader.BuiltinClassLoader.loadClass(java.base@9-ea/BuiltinClassLoader.java:366)
at
jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(java.base@9-ea/ClassLoaders.java:184)
at java.lang.ClassLoader.loadClass(java.base@9-ea/ClassLoader.java:419)
at java.lang.Class.forName0(java.base@9-ea/Native Method)
at java.lang.Class.forName(java.base@9-ea/Class.java:294)
at Test.main(Test.java:3)
$ java -version
java version "9-ea"
Java(TM) SE Runtime Environment (build 9-ea+118)
Java HotSpot(TM) 64-Bit Server VM (build 9-ea+118, mixed mode)
This works with build 116 and Java 8.
This is not the only class that’s missing at runtime, there are more: I do not
have the complete list, but our checks using the forbiddenapis Ant/Maven/Gradle
plugin fails to load classes around JAXB/XML (javax.xml.bind.*, javax.jws.*)
and CORBA (org.omg.CORBA.*), but also "javax.activation.ActivationDataFlavor".
But there may be more packages missing.
It looks like some module exports are missing because the classes are all
listed on the JDK docs:
http://download.java.net/java/jdk9/118/docs/api/index.html
I'd suggest to add a check in the packaging that validates that all classes
also visible in the Javadocs are visible at runtime from applications not using
the module system.
Should I open bug report or can we shortcut this through the mailing list?
Greetings from the Lucene team,
Uwe
-----
Uwe Schindler
[email protected]
ASF Member, Apache Lucene PMC / Committer
Bremen, Germany
http://lucene.apache.org/
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