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  1. ,
    via askubuntu.com by Unknown author

    Set the path for java. Try to look it from here.

  2. ,
    Expert tip

    You might've forgot to add a dependency or it's written wrong. Also, you might be using incompatible versions of Java and Hibernate. More on this here: https://goo.gl/SjSlRA

java.lang.ClassNotFoundException: org.w3c.dom.ElementTraversal	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)	at java.lang.ClassLoader.defineClass1(Native Method)	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)	at java.lang.ClassLoader.defineClass(ClassLoader.java:615)	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)	at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)	at java.net.URLClassLoader.access$000(URLClassLoader.java:58)	at java.net.URLClassLoader$1.run(URLClassLoader.java:197)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)	at org.apache.xerces.parsers.AbstractDOMParser.startDocument(Unknown Source)	at org.apache.xerces.impl.dtd.XMLDTDValidator.startDocument(Unknown Source)	at org.apache.xerces.impl.XMLDocumentScannerImpl.startEntity(Unknown Source)	at org.apache.xerces.impl.XMLVersionDetector.startDocumentParsing(Unknown Source)	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)	at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)	at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)	at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:208)	at org.openqa.selenium.firefox.internal.FileExtension.readIdFromInstallRdf(FileExtension.java:97)	at org.openqa.selenium.firefox.internal.FileExtension.writeTo(FileExtension.java:60)	at org.openqa.selenium.firefox.internal.ClasspathExtension.writeTo(ClasspathExtension.java:63)	at org.openqa.selenium.firefox.FirefoxProfile.installExtensions(FirefoxProfile.java:465)	at org.openqa.selenium.firefox.FirefoxProfile.layoutOnDisk(FirefoxProfile.java:443)	at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:77)	at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:244)	at org.openqa.selenium.remote.RemoteWebDriver.(RemoteWebDriver.java:110)	at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:188)	at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:183)	at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:179)	at au.com.mycompany.selenium.SeleniumTestParent.setUpFirefoxDriver(SeleniumTestParent.java:70)	at au.com.mycompany.selenium.SeleniumCommonTest.testFF(SeleniumCommonTest.java:9)	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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30)	at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:47)	at org.junit.rules.RunRules.evaluate(RunRules.java:18)	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)	at org.junit.runners.ParentRunner.run(ParentRunner.java:300)	at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:62)	at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSet(AbstractDirectoryTestSuite.java:140)	at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute(AbstractDirectoryTestSuite.java:127)	at org.apache.maven.surefire.Surefire.run(Surefire.java:177)	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.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:345)	at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1009)