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I did an example that you may clone by

git clone https://github.com/rolfschumacher/chFop.git

Importing it to Eclipse as an existing Maven project and let it run leads to

Unable to derive module descriptor for org/apache/xmlgraphics/fop-core/2.10/fop-core-2.10.jar

Hence, what do I have to do to make it run?

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    Does this thread help understand/resolve the issue? Can you state, further details around what have you tried and didn't work still. Commented Nov 2, 2024 at 11:37
  • @Naman the link you gave too complex for me. I tried w/o Eclipse: java -p lib/fop-core-2.10.jar:lib/xmlgraphics-commons-2.10.jar:chFop-0.0.1-SNAPSHOT.jar eu.ngopng.chFop.App but got the same error: Unable to derive module descriptor for .../fop-core-2.10.jar. How to change that cmd for using -cp instead? Commented Nov 13, 2024 at 14:02
  • The command is almost similar, while -p treats the JARs to be on the modulepath -cp considers it to be on the classpath. So java -cp "lib/fop-core-2.10.jar:lib/xmlgraphics-commons-2.10.jar:chFop-0.0.1-SNAPSHOT.jar" eu.ngopng.chFop.App shall work. Commented Nov 14, 2024 at 2:08
  • Yes, that works: java -cp "lib/*:target/chFop-0.0.1-SNAPSHOT.jar" eu.ngong.chFop.App with lib containing batik-all-1.18.jar, commons-logging-1.3.4.jar, fop-events-2.10.jar, xmlgraphics-commons-2.10.jar, commons-io-2.17.0.jar, fop-core-2.10.jar, fop-util-2.10.jar. Hence, I got to wait for using fop with JPMS, right? Commented Nov 18, 2024 at 11:24
  • Yes, to make use of these libraries with JPMS you would have to wait for them to be updated to fix the issues in deriving their module description or being transformed explicitly into a module in itself. Commented Nov 19, 2024 at 2:27
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