[🐛 Bug]: java.lang.NoClassDefFoundError: dev/failsafe/Policy

[Mammad Yahya]

What happened?

I am using Maven with Selenium version 4.18.1. I tried almost every old version (from 4.11.0 to 4.18.1) of Selenium still got the same issue in every version.

I've see this error happened on others who use Java FX, but I don't use Java FX.

I tried to add failsafe dependency

<dependency>
            <groupId>dev.failsafe</groupId>
            <artifactId>failsafe</artifactId>
            <version>3.3.2</version>
</dependency>

still got the same error.

Note

I am using Java 17 with modules (module-info.java).

module module.name {
    requires org.seleniumhq.selenium.api;
    requires org.apache.logging.log4j;
    requires org.seleniumhq.selenium.remote_driver;
    requires org.seleniumhq.selenium.chrome_driver;
}

How can we reproduce the issue?

System.setProperty("webdriver.chrome.driver", "C:\\Users\\Admin\\Downloads\\chrome_win64\\chrome.exe");
var driver = new ChromeDriver();
driver.get("https://www.google.com");


In above code, I tried other Chrome versions, but still got the same error (`java.lang.NoClassDefFoundError: dev/failsafe/Policy`).

Relevant log output

java.lang.NoClassDefFoundError: dev/failsafe/Policy

	at org.seleniumhq.selenium.http/org.openqa.selenium.remote.http.ClientConfig.<clinit>(ClientConfig.java:33)
	at org.seleniumhq.selenium.chrome_driver/org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:84)
	at org.seleniumhq.selenium.chrome_driver/org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:52)
Caused by: java.lang.ClassNotFoundException: dev.failsafe.Policy
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
	... 9 more

Operating System

Windows 10

Selenium version

4.18.1 (maven -> org.seleniumhq.selenium:selenium-java:4.18.1)

What are the browser(s) and version(s) where you see this issue?

Chrome 114.0.5735.90, 122.0.6261.111 (r1250580)

What are the browser driver(s) and version(s) where you see this issue?

Chrome 114.0.5735.90, 122.0.6261.111 (r1250580)

Are you using Selenium Grid?

No

[github-actions]

@mammadyahyayev, thank you for creating this issue. We will troubleshoot it as soon as we can.

---

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Thank you!

[Krishnan Mahadevan]

Your module file should have looked like below:

module issue_13670 {
    requires org.seleniumhq.selenium.api;
    requires org.seleniumhq.selenium.remote_driver;
    requires org.seleniumhq.selenium.chrome_driver;
    requires org.testng;
    exports com.rationaleemotions;
    requires dev.failsafe.core;
}

The important line is requires dev.failsafe.core;

Here's a complete project that shows all of this in action.

issue_13670.zip

[Krishnan Mahadevan]

@mammadyahyayev - Feel free to close this issue once you have confirmed that the above solution works.

[Mammad Yahya]

@krmahadevan thanks a lot, it worked, I thought I've already tried this one, but I missed.