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Piotr Zygielo commented on MPH-191: ----------------------------------- help:evaluate works for me with JDK18: {noformat} $ mvn -V org.apache.maven.plugins:maven-help-plugin:3.3.0:evaluate -Dexpression=project.properties -N Apache Maven 3.8.6 (84538c9988a25aec085021c365c560670ad80f63) Maven home: /usr/local/maven Java version: 18.0.1.1, vendor: Oracle Corporation, runtime: /usr/local/jdk-18.0.1.1 Default locale: en_GB, platform encoding: UTF-8 OS name: "linux", version: "5.19.16-100.fc35.x86_64", arch: "amd64", family: "unix" [INFO] Scanning for projects... [INFO] [INFO] -------------< org.apache.maven.plugins:maven-help-plugin >------------- [INFO] Building Apache Maven Help Plugin 3.3.1-SNAPSHOT [INFO] ----------------------------[ maven-plugin ]---------------------------- [INFO] [INFO] --- maven-help-plugin:3.3.0:evaluate (default-cli) @ maven-help-plugin --- [INFO] No artifact parameter specified, using 'org.apache.maven.plugins:maven-help-plugin:maven-plugin:3.3.1-SNAPSHOT' as project. [INFO] <properties> <assembly.tarLongFileMode>posix</assembly.tarLongFileMode> <checkstyle.violation.ignore>RedundantThrows,NewlineAtEndOfFile,ParameterNumber,MethodLength,FileLength</checkstyle.violation.ignore> <distMgmtSnapshotsName>Apache Development Snapshot Repository</distMgmtSnapshotsName> <distMgmtSnapshotsUrl>https://repository.apache.org/content/repositories/snapshots</distMgmtSnapshotsUrl> <fluidoSkinVersion>1.11.1</fluidoSkinVersion> <gpg.useagent>true</gpg.useagent> <javaVersion>8</javaVersion> <maven.compiler.createMissingPackageInfoClass>false</maven.compiler.createMissingPackageInfoClass> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> <maven.gitcommitid.nativegit>true</maven.gitcommitid.nativegit> <maven.plugin.tools.version>3.6.4</maven.plugin.tools.version> <maven.site.cache>.../maven-sites</maven.site.cache> <maven.site.path>plugins-archives/maven-help-plugin-LATEST</maven.site.path> <mavenPluginToolsVersion>3.6.4</mavenPluginToolsVersion> <mavenVersion>3.2.5</mavenVersion> <minimalJavaBuildVersion>1.8</minimalJavaBuildVersion> <minimalMavenBuildVersion>3.2.5</minimalMavenBuildVersion> <organization.logo>https://www.apache.org/images/asf_logo_wide_2016.png</organization.logo> <project.build.outputTimestamp>2022-08-14T12:24:27Z</project.build.outputTimestamp> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <sisuVersion>0.3.5</sisuVersion> <sonar.host.url>https://builds.apache.org/analysis/</sonar.host.url> <sourceReleaseAssemblyDescriptor>source-release</sourceReleaseAssemblyDescriptor> <surefire.reportFormat>plain</surefire.reportFormat> <surefire.version>3.0.0-M7</surefire.version> </properties> [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 2.272 s [INFO] Finished at: 2022-10-29T09:03:08+02:00 [INFO] ------------------------------------------------------------------------ {noformat} > help:evaluate fails on Java 18 - java.util.Hashtable.table not accessible > ------------------------------------------------------------------------- > > Key: MPH-191 > URL: https://issues.apache.org/jira/browse/MPH-191 > Project: Maven Help Plugin > Issue Type: Bug > Components: evaluate > Affects Versions: 3.3.0 > Reporter: Ondrej Zizka > Priority: Minor > > When running help:evaluate: > {noformat} > com.thoughtworks.xstream.converters.reflection.ReflectionConverter[ERROR] > message[2] : Unable to make field private transient > java.util.Hashtable$Entry[] java.util.Hashtable.table accessible: module > java.base does not "opens java.util" to unnamed module @4fc3529 > {noformat} > {noformat} > $ $MVN $MVN_OPTS help:system help:effective-settings help:effective-pom > dependency:tree help:evaluate -Dexpression=project.properties -q > -DforceStdout[ERROR] Failed to execute goal > org.apache.maven.plugins:maven-help-plugin:3.3.0:evaluate (default-cli) on > project tracker-service-app: Execution default-cli of goal > org.apache.maven.plugins:maven-help-plugin:3.3.0:evaluate failed: No > converter available[ERROR] ---- Debugging information ----[ERROR] message > : No converter available[ERROR] type : > org.apache.maven.plugins.help.AbstractEffectiveMojo$SortedProperties[ERROR] > converter : > com.thoughtworks.xstream.converters.reflection.SerializableConverter[ERROR] > message[1] : Unable to make private void > java.util.Hashtable.readObject(java.io.ObjectInputStream) throws > java.io.IOException,java.lang.ClassNotFoundException accessible: module > java.base does not "opens java.util" to unnamed module @4fc3529[ERROR] > converter[1] : > com.thoughtworks.xstream.converters.reflection.ReflectionConverter[ERROR] > message[2] : Unable to make field private transient > java.util.Hashtable$Entry[] java.util.Hashtable.table accessible: module > java.base does not "opens java.util" to unnamed module @4fc3529{noformat} -- This message was sent by Atlassian Jira (v8.20.10#820010)