how do I figure out what version of xerces used in my OpenJDK library?

Question

I am developing a Java application using Spring framework. Spring uses the Apache Xerces library which is included inside rt.jar comes with my java OpenJDK 8 installation. I wonder how do I know what exact version of Xerces is used in rt.jar?

The suggested answer at How to find what apache.xerces version does spring-framework use? does not answer my question here. It does not tell how to find out the xerces version from rt.lib

Answer 1

Up to java 8 you check the bundled xerces version with:

java com.sun.org.apache.xerces.internal.impl.Version

After java 8 (i.e from java 9 upwards) you can extract the jmods/java.xml.jmod with:

jmod extract java.xml.jmod

And then look in the just extracted legal/xerces.md. Usually the version is on the first line stated as a commented text.