When i use this javacode in a maven project : setXPathClass(Class.forName(className));
where className=org.jdom.xpath.JaxenXPath i have this error : java.lang.NoClassDefFoundError: org/jaxen/NamespaceContext at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:141) at org.jdom.xpath.XPath.newInstance(XPath.java:128) at org.jdom.xpath.XPath.selectNodes(XPath.java:349) at org.jtestcase.core.digester.XQueryParserImpl_Jaxen.getElements(XQueryParserImpl_Jaxen.java:79) at org.jtestcase.core.digester.JTestCaseDigester.getTestCaseGlobalParams( JTestCaseDigester.java:828) at org.jtestcase.JTestCase.getGlobalParams(JTestCase.java:240) at org.jtestcase.JTestCase.getGlobalParamLocale(JTestCase.java:278) at org.jtestcase.JTestCase.<init>(JTestCase.java:155) at com.test_junit.app.CalculatorTest.<init>(CalculatorTest.java:53) at com.test_junit.app.CalculatorTest.suite(CalculatorTest.java:76) 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:324) at org.apache.maven.surefire.battery.JUnitBattery.processTestClass( JUnitBattery.java:130) at org.apache.maven.surefire.battery.JUnitBattery.<init>( JUnitBattery.java:81) at org.apache.maven.surefire.SurefireUtils.instantiateBattery( SurefireUtils.java:63) at org.apache.maven.surefire.Surefire.instantiateBatteries( Surefire.java:262) at org.apache.maven.surefire.Surefire.run(Surefire.java:140) at org.apache.maven.surefire.Surefire.run(Surefire.java:87) 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:324) at org.apache.maven.surefire.SurefireBooter.runTestsInProcess( SurefireBooter.java:313) at org.apache.maven.surefire.SurefireBooter.run(SurefireBooter.java:221) at org.apache.maven.test.SurefirePlugin.execute(SurefirePlugin.java:371) at org.apache.maven.plugin.DefaultPluginManager.executeMojo( DefaultPluginManager.java:412) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals( DefaultLifecycleExecutor.java:534) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle (DefaultLifecycleExecutor.java:475 at org.apache.maven.lifecycle.DefaultLifecycleExecutor.forkProjectLifecycle( DefaultLifecycleExecutor.java:891) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.forkLifecycle (DefaultLifecycleExecutor.java:734) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals( DefaultLifecycleExecutor.java:525) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle (DefaultLifecycleExecutor.java:475 at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal( DefaultLifecycleExecutor.java:454) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures (DefaultLifecycleExecutor.java at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments( DefaultLifecycleExecutor.java:273) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute( DefaultLifecycleExecutor.java:140) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:322) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:115) at org.apache.maven.cli.MavenCli.main(MavenCli.java:256) 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:324) at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315) at org.codehaus.classworlds.Launcher.launch(Launcher.java:255) at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430) at org.codehaus.classworlds.Launcher.main(Launcher.java:375) Where the error come from? Why the JDOM package works in Eclipse but doesn't in Maven? How resolve the problem ? Thaks for anyone who reads me. Pierre