java.lang.ClassNotFoundException: okhttp3.ConnectionPool - Selenium Error

+1 vote

Below is my simple Selenium Test Code:

public static void main(String[] args) {

    System.setProperty("", "/home/chromedriver");
    WebDriver driver= new ChromeDriver();


And still i get an error: 

Exception in thread "main" java.lang.NoClassDefFoundError: okhttp3/ConnectionPool | Caused by: java.lang.ClassNotFoundException: okhttp3.ConnectionPool
Mar 30, 2018 in Selenium by Shubham
• 13,380 points

3 answers to this question.

0 votes
Best answer
The only reason for ClassNotFoundException is if your JARS are not right. First download the latest jar files from here: Also download the latest ChromeDriver. Update Chrome to the latest version supported by the chromedriver. And make sure the JARS are added appropriately. Then you should be fine.

Do let me know if this works.
answered Mar 30, 2018 by nsv999
• 5,510 points

selected May 16, 2018 by Sudhir
Doesn't work
which version of Selenium Jars, & chromedriver are you using?
+1 vote

okhttp-3.10.0.jar & okio1.14.1.jar may be solve using this jar files your problem java.lang.NoClassDefFoundError: okhttp3/ConnectionPool

answered Aug 28, 2018 by Surendra Patil
Thanks Surendra. Never knew there was a JAR file named like these. Let's hope @shubhamsinha's error is solved.

Hello Surendra.

I'm getting below error after adding the okhttp-3.10.0.jar & okio1.14.1.jar file into my project.

:- java.lang.NoClassDefFoundError: org/apache/commons/exec/Executor

0 votes
give a full path for system property and escape the slash used
answered Jan 14, 2019 by Sourabh

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