The package org.w3c.dom is accessible from more than one module: <unnamed>, java.xml

Question

I am unable to import org.w3c.dom.NodeList package to Eclipse. It is showing

The package org.w3c.dom is accessible from more than one module: <unnamed>, java.xml" error message in eclipse.

Please let me know how to fix this ?

Eclipse Version:

Eclipse IDE for Enterprise Java Developers.

Version: 2019-06 (4.12.0)

Build id: 20190614-1200

Java version:

java version "12.0.1" 2019-04-16

Java(TM) SE Runtime Environment (build 12.0.1+12)

Java HotSpot(TM) 64-Bit Server VM (build 12.0.1+12, mixed mode, sharing)

Answer 1

I had a similar issue because of a transitive xml-apis dependency. I resolved it using a Maven exclusion:

<dependency>     <groupId>org.apache.xmlgraphics</groupId>     <artifactId>fop</artifactId>     <version>0.95</version>          <exclusions>         <exclusion>             <groupId>xml-apis</groupId>             <artifactId>xml-apis</artifactId>         </exclusion>     </exclusions> </dependency> 

Another dependency that just causes trouble and I don't have a solution other than removing it is this one:

<dependency>     <groupId>com.oracle.database.xml</groupId>     <artifactId>xmlparserv2</artifactId>     <version>${oracle.version}</version> </dependency> 

Use mvn dependency:tree to see who brings in the transitive dependency, and then exclude that from there.

Answer 2

Disappointingly I don't see any compiler flags to show what jar the problem is with Even -Xlint:module doesn't seem to show up anything useful and eclipse doesn't shed any light on the issue

Instead to find where org.w3c.dom comes from I've been using this script:

mvn dependency:copy-dependencies -DincludeScope=test -DoutputDirectory=deps for i in deps/*.jar; do if unzip -l $i| grep -q org.w3c.dom; then echo $i; fi ; done 

Strictly you don't have to specify the scope test as that's the default but I've included it as you might want to use compile instead