JavaScript: Issue with launching Firefox browser in Selenium

I'm currently diving into Selenium WebDriver and teaching myself how to use it with JavaScript. My current challenge is trying to launch the Firefox browser.

Here are the specs of my machine:

  1. Operating System: Windows 7 64-bit
  2. Processor: i5 Processor
  3. RAM: 8GB
  4. IDE: Eclipse Java EE IDE for Web Developers

Unfortunately, I've encountered an error and am unable to attach a screenshot. Here's the description:

Exception in thread "main" java.lang.NoClassDefFoundError: com/google/common/base/Function
    at BrowserInvocation.main(BrowserInvocation.java:8)
Caused by: java.lang.ClassNotFoundException: com.google.common.base.Function
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 1 more

If anyone could lend some assistance, that would be greatly appreciated.

javascriptjavaeclipsefirefoxselenium

Answer №1

When a NoClassDefFoundError occurs, it means that the Java Runtime Environment is unable to locate a specific class, which in this case is likely Selenium. To resolve this issue, you must include Selenium in your classpath.

  • Navigate to Project > Properties > Java build path
  • Under Libraries, select Add External JARs
  • Locate the selenium-java-2.48.0.jar file and add it (NOT selenium-java-2.48.0-srcs.jar)
  • If there are additional jar files in the Libs folder within the same directory, be sure to include them as well
  • Click OK to save the changes

Additionally, ensure that the Selenium Standalone Server is included in your classpath as well.

Answer №2

The issue you're encountering indicates that the Function class is missing from your classpath. It appears that "com.google.common.base.Function" is part of the Guava library ()

You have two options: either add the appropriate jar file using your dependency manager (such as Maven or Gradle) or follow the recommended procedure provided by the individual mentioned.

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