Why Am I Getting a "NoClassDefFoundError" Despite Adding Selenium Dependency in My pom.xml?

NoClassDefFoundError in Selenium Despite Adding Dependency

In your issue, you mentioned encountering the "java.lang.NoClassDefFoundError: org/openqa/selenium/WebDriver" error despite adding the Selenium dependency in your pom.xml. Let's delve into the reasons behind it and provide a solution.

Although you included the dependency in your pom.xml, it appears that the Selenium JARs are not present in your local Maven repository. The error indicates that the WebDriver class cannot be found, which suggests that the dependency hasn't been properly resolved or installed.

The fact that you can't locate the "org/openqa" package in your repository is likely due to the versioning of the dependency. The Selenium libraries were previously maintained by the "openqa" organization and are now managed by "seleniumhq".

Hence, the correct artifact ID for the latest version of Selenium is "selenium-java" with the groupId "org.seleniumhq.selenium". You have mentioned using version 3.7.1, which is in the "openqa" namespace, so this could be the issue.

Solution:

To resolve this error, ensure that you have the correct version of the dependency in your pom.xml:

<dependency>
    <groupId>org.seleniumhq.selenium</groupId>
    <artifactId>selenium-java</artifactId>
    <version>latest</version>
</dependency>

Once you have added the dependency correctly, run "mvn clean install" to download the necessary JARs. Make sure to check that the JARs are installed in your local Maven repository (~/.m2/repository).

For Eclipse users, you may need to manually add the Selenium JARs to the classpath of your project. Right-click your project, select "Build Path" > "Configure Build Path," and add the JARs from your Maven repository to the "Classpath" tab.

Finally, clean and rebuild your project to ensure that the WebDriver class is available in your project. This should resolve the "NoClassDefFoundError" and allow you to import Selenium Webdriver successfully.

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