NoClassDefFoundError in Java com google common base Function

Question

When I executing the following code    public static void main String   args        try           FirefoxDriver driver   new FirefoxDriver            driver get  http www yahoo com          catch  NoClassDefFoundError ex            System out println  error      ex getStackTrace               I m facing the following error       error  Ljava lang StackTraceElement  80f4cb      Exception in thread  main  java lang NoClassDefFoundError  com google common base Function    Could someone help me to find the solution or reason for this

User · Answer

I had the same problem  and finally I found that I forgot to add the selenium-server-standalone-version jar  I had only added the client jar  selenium-java-version jar   Hope this helps

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It looks like you re trying to import some google code   import com google common base Function    And it s not finding it the class Function   Check to make sure all the required libraries are in your build path  and that you typed the package correctly

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After you extract your  selenium-java- zip  file you need to configure your build path from your IDE  Import all the jar files under  lib  folder and both selenium standalone server  amp  Selenium java version jar files

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this is for chrome   System setProperty  webdriver chrome driver   D   Testing offical  chromedriver exe    driver  new ChromeDriver    this is for fire fox  System setProperty  webdriver gecko driver    D   Testing offical  geckodriver exe     driver  new FirefoxDriver      pattern    System setProperty  webdriver gecko driver     Path of the gecko driver         Note download gecko from here   - http   docs seleniumhq org download

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I met the same problem and fail even after installing the  selenium-server-standalone-version jar   I think you need to install the guava and guava-gwt jar  https   code google com p guava-libraries   as well  I added all of these jar  and finally it worked in my PC  Hope it works for others meeting this issue

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When I caught the exception java lang NoClassDefFoundError  com google common base Function it was caused by errors in Project Libraries    Please check it in your project settings  For Intellij IDEA go to File - Project Structure and select Modules tab  All I needed to do to resolve this exception was re-adding the selenium library

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I had the same problem  and finally I found that I forgot to add the selenium-server-standalone-version jar  I had only added the client jar  selenium-java-version jar

User · Answer

I got the same error  but it was resolved if you add the libraries of selenium  again if you haven t   if you are using INTELIJ     project projectStructure Module   add the selenium jars  both from lib folder and outside ones       Same needs to be done for other IDE s as well  like eclipse

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Please include all the jar files of selenium stand-alone and lib folder  then this error will resolved

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I had the same issue  I found that I forgot to add selenium-2 53 0 selenium-java-2 53 0-srcs jar file to my project s Reference library

User · Answer

A NoClassDefFoundError is thrown when the JRE can t find a class  In your case  it can t find the class com google common base Function  which you most probably did not add to your classpath   EDIT  After downloading the following libraries    Selenium  http   code google com p selenium downloads list Guava  http   code google com p guava-libraries downloads list Apache HttpComponents  http   hc apache org downloads cgi JSON jar  http   www jarfinder com index php jars versionInfo 21653   and unzipping them and putting all JAR files in a folder called lib  the test class   import org openqa selenium firefox FirefoxDriver   public class Test       public static void main String   args            try              FirefoxDriver driver   new FirefoxDriver                driver get  http www yahoo com              catch Exception e               e printStackTrace                        ran without any problems   You can compile and run the class as follows      compile and run on Linux   Mac javac -cp   lib   Test java  java -cp   lib   Test    compile and run on Windows javac -cp   lib   Test java  java -cp   lib   Test

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I wanted to try a simple class outside IDE and stuff  So downloaded selenium zip from website and run the class like this   java -cp selenium-2 50 1   selenium-2 50 1 libs     my package MyClass  lt params gt    I had the issue that I initially used lib instead of libs  I didn t need to add selenium standalone jar  This is Java 8 that understands wildcards in classpath  I think java 7 would also do

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I encountered the same error and after the investigation  I found that library selenium-api 2 41 0 requires guava 15 0 but it was overridden by an older version so I declared guava 15 0 as a direct dependency by adding following configuration in pom xml    lt dependency gt           lt artifactId gt guava lt  artifactId gt           lt groupId gt com google guava lt  groupId gt           lt type gt jar lt  type gt           lt version gt 15 0 lt  version gt   lt  dependency gt

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For me  in addition to selecting the jar - selenium-java-2 45 0 jar  I had to select all the jars in the  libs  folder under selenium root folder

User · Answer

you don t have the  google-collections  library on your classpath   There are a number of ways to add libraries to your classpath  so please provide more info regarding how you are executing your program   if from the command line  you can add libraries to the classpath via   java -classpath path lib jar

[java] NoClassDefFoundError in Java: com/google/common/base/Function

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