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    If JVM throws ClassNotFoundException the class is not found in classpath. Seems you are missing hibernate dependency in your project set up. Try downloading hibernate-core.jar and add to your project classpath.

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via Gradle Issues by Olivier Girardot, 1 year ago
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org/apache/commons/digester/RuleSet
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java.lang.ClassNotFoundException: org.jaxen.XPath	at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)	at java.lang.Class.getDeclaredConstructors0(Native Method)	at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)	at java.lang.Class.getConstructor0(Class.java:2699)	at java.lang.Class.newInstance0(Class.java:326)	at java.lang.Class.newInstance(Class.java:308)	at net.sourceforge.pmd.RuleSetFactory.parseSingleRuleNode(RuleSetFactory.java:309)	at net.sourceforge.pmd.RuleSetFactory.parseRuleNode(RuleSetFactory.java:253)	at net.sourceforge.pmd.RuleSetFactory.parseRuleSetNode(RuleSetFactory.java:209)	at net.sourceforge.pmd.RuleSetFactory.createRuleSet(RuleSetFactory.java:157)	at net.sourceforge.pmd.RuleSetFactory.createRuleSet(RuleSetFactory.java:146)	at net.sourceforge.pmd.RuleSetFactory.parseRuleReferenceNode(RuleSetFactory.java:365)	at net.sourceforge.pmd.RuleSetFactory.parseRuleNode(RuleSetFactory.java:255)	at net.sourceforge.pmd.RuleSetFactory.parseRuleSetNode(RuleSetFactory.java:209)	at net.sourceforge.pmd.RuleSetFactory.createRuleSet(RuleSetFactory.java:157)	at net.sourceforge.pmd.RuleSetFactory.createRuleSet(RuleSetFactory.java:146)	at org.sonar.plugins.pmd.PmdExecutor.createRulesets(PmdExecutor.java:100)	at org.sonar.plugins.pmd.PmdExecutor.execute(PmdExecutor.java:64)	at org.sonar.plugins.pmd.PmdSensor.analyse(PmdSensor.java:45)	at org.sonar.batch.phases.SensorsExecutor.execute(SensorsExecutor.java:58)	at org.sonar.batch.phases.Phases.execute(Phases.java:80)	at org.sonar.batch.ProjectBatch.execute(ProjectBatch.java:59)	at org.sonar.batch.Batch.analyzeModule(Batch.java:164)	at org.sonar.batch.Batch.analyzeModules(Batch.java:82)	at org.sonar.batch.Batch.execute(Batch.java:62)	at org.sonar.batch.Batch$execute.call(Unknown Source)	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40)	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:120)	at org.gradle.api.plugins.sonar.internal.SonarCodeAnalyzer.execute(SonarCodeAnalyzer.groovy:52)	at org.gradle.api.plugins.sonar.internal.SonarCodeAnalyzer$execute.call(Unknown Source)	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40)	at org.gradle.api.plugins.sonar.internal.SonarCodeAnalyzer$execute.call(Unknown Source)	at org.gradle.api.plugins.sonar.Sonar$_execute_closure1.doCall(Sonar.groovy:116)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)	at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)	at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:273)	at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:886)	at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66)	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:149)	at org.gradle.api.plugins.sonar.Sonar$_execute_closure1.doCall(Sonar.groovy)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)	at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)	at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:273)	at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:886)	at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:39)	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:120)	at org.gradle.api.plugins.sonar.Sonar.withErrorSqlLogging(Sonar.groovy:253)	at org.gradle.api.plugins.sonar.Sonar.this$5$withErrorSqlLogging(Sonar.groovy)	at org.gradle.api.plugins.sonar.Sonar$this$5$withErrorSqlLogging.callCurrent(Unknown Source)	at org.gradle.api.plugins.sonar.Sonar.execute(Sonar.groovy:104)	at org.gradle.execution.DefaultTaskGraphExecuter.executeTask(DefaultTaskGraphExecuter.java:167)	at org.gradle.execution.DefaultTaskGraphExecuter.doExecute(DefaultTaskGraphExecuter.java:160)	at org.gradle.execution.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:78)	at org.gradle.execution.TaskNameResolvingBuildExecuter.execute(TaskNameResolvingBuildExecuter.java:113)	at org.gradle.execution.DelegatingBuildExecuter.execute(DelegatingBuildExecuter.java:54)	at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:158)	at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:112)	at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:80)	at org.gradle.launcher.RunBuildAction.execute(RunBuildAction.java:41)	at org.gradle.launcher.RunBuildAction.execute(RunBuildAction.java:27)	at org.gradle.launcher.ExceptionReportingAction.execute(ExceptionReportingAction.java:32)	at org.gradle.launcher.ExceptionReportingAction.execute(ExceptionReportingAction.java:21)	at org.gradle.launcher.CommandLineActionFactory$WithLoggingAction.execute(CommandLineActionFactory.java:219)	at org.gradle.launcher.CommandLineActionFactory$WithLoggingAction.execute(CommandLineActionFactory.java:203)	at org.gradle.launcher.Main.execute(Main.java:55)	at org.gradle.launcher.Main.main(Main.java:40)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.gradle.launcher.ProcessBootstrap.runNoExit(ProcessBootstrap.java:46)	at org.gradle.launcher.ProcessBootstrap.run(ProcessBootstrap.java:28)	at org.gradle.launcher.GradleMain.main(GradleMain.java:24)