This is a minimal example for PMD issue 3330 and Gradle issue 17410.
When executing ./gradlew, PMD will output the following:
> Task :project2:pmdMain
Error during type resolution of field 'BZIP' in class project1.Compression due to: java.lang.NoClassDefFoundError: org/apache/commons/compress/compressors/bzip2/BZip2CompressorOutputStream
BUILD SUCCESSFUL in 5s
8 actionable tasks: 8 executed
When executing ./gradlew :project2:dependencies, Gradle prints the following:
> Task :project2:dependencies
------------------------------------------------------------
Project ':project2'
------------------------------------------------------------
annotationProcessor - Annotation processors and their dependencies for source set 'main'.
No dependencies
api - API dependencies for source set 'main'. (n)
No dependencies
apiElements - API elements for main. (n)
No dependencies
archives - Configuration for archive artifacts. (n)
No dependencies
compileClasspath - Compile classpath for source set 'main'.
\--- project :project1
compileOnly - Compile only dependencies for source set 'main'. (n)
No dependencies
compileOnlyApi - Compile only API dependencies for source set 'main'. (n)
No dependencies
default - Configuration for default artifacts. (n)
No dependencies
implementation - Implementation only dependencies for source set 'main'. (n)
\--- project project1 (n)
pmd - The PMD libraries to be used for this project.
\--- net.sourceforge.pmd:pmd-java:6.35.0
+--- net.sourceforge.pmd:pmd-core:6.35.0
| +--- org.antlr:antlr4-runtime:4.7.2
| +--- com.beust:jcommander:1.48
| +--- commons-io:commons-io:2.6
| +--- net.sourceforge.saxon:saxon:9.1.0.8
| +--- org.apache.commons:commons-lang3:3.8.1
| +--- org.ow2.asm:asm:9.1
| \--- com.google.code.gson:gson:2.8.5
+--- net.sourceforge.saxon:saxon:9.1.0.8
+--- org.ow2.asm:asm:9.1
+--- commons-io:commons-io:2.6
\--- org.apache.commons:commons-lang3:3.8.1
runtimeClasspath - Runtime classpath of source set 'main'.
\--- project :project1
\--- org.apache.commons:commons-compress:1.20
runtimeElements - Elements of runtime for main. (n)
No dependencies
runtimeOnly - Runtime only dependencies for source set 'main'. (n)
No dependencies
testAnnotationProcessor - Annotation processors and their dependencies for source set 'test'.
No dependencies
testCompileClasspath - Compile classpath for source set 'test'.
\--- project :project1
testCompileOnly - Compile only dependencies for source set 'test'. (n)
No dependencies
testImplementation - Implementation only dependencies for source set 'test'. (n)
No dependencies
testRuntimeClasspath - Runtime classpath of source set 'test'.
\--- project :project1
\--- org.apache.commons:commons-compress:1.20
testRuntimeOnly - Runtime only dependencies for source set 'test'. (n)
No dependencies
(*) - dependencies omitted (listed previously)
(n) - Not resolved (configuration is not meant to be resolved)
A web-based, searchable dependency report is available by adding the --scan option.
BUILD SUCCESSFUL in 1s
The dependency required to resolve the mentioned class BZip2CompressorOutputStream is present in runtimeClasspath.