java.lang.NoClassDefFoundError Error while using WebDriverManager in Java project - selenium

Question

I have created a plain Java Project and added all selenium 4.0.1/testng 7 and WebDriverManager 5.0.3 jars and set up classpath.
My Code here is
WebDriverManager.chromedriver().setup();
WebDriver driver= new ChromeDriver();
There is no compilation error, however, when execute as TestNG Class getting below error
java.lang.NoClassDefFoundError: org/apache/hc/core5/http/ClassicHttpRequest
at SeleniumSampleTest.checkTest(SeleniumSampleTest.java:15)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:133)
at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:598)
at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:173)
at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)
at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:824)
at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:146)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at org.testng.TestRunner.privateRun(TestRunner.java:794)
at org.testng.TestRunner.run(TestRunner.java:596)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:377)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:371)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:332)
at org.testng.SuiteRunner.run(SuiteRunner.java:276)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1212)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1134)
at org.testng.TestNG.runSuites(TestNG.java:1063)
at org.testng.TestNG.run(TestNG.java:1031)
at com.intellij.rt.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:66)
at com.intellij.rt.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:109)
Caused by: java.lang.ClassNotFoundException: org.apache.hc.core5.http.ClassicHttpRequest
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
... 28 more
When I use the same code but build the project as a maven, then not getting any issues.
Any lights on this error will help to move ahead in the Java project
Please refer complete code here
[https://gist.github.com/veenadevi/62e7098c9809b2f0d2a1baa68141c028][1]

Answer 1

try this way->
public String baseURL=readconfig.getApplicationURL();
public static WebDriver driver;
public static Logger logger;
#Parameters("browser")
#BeforeClass
public void setup(String br)
{
//log
logger=Logger.getLogger("UnifyJobsV1");
PropertyConfigurator.configure("Log4j.properties");
if(br.equals("chrome"))
{
System.setProperty("webdriver.chrome.driver",readconfig.getChromePath());
driver=new ChromeDriver();
}
else if(br.equals("firefox"))
{
System.setProperty("webdriver.gecko.driver",readconfig.getFirefoxPath());
driver=new FirefoxDriver();
}
driver.get(baseURL);
}
#AfterClass
public void tearDown() {
driver.quit();
}

Answer 2

There is com.intellij.rt.testng.IDEARemoteTestNG.run in stacktrace, so you're using Intellij IDEA. Since maven execution works, there is no dependencies conflicts.
It looks like IDE related issue.
I can suggest 2 options.
1 Try to mvn clean, and Build -> Rebuild Project in IDE.
2 Also restarting IDEA and File -> Invalidate caches could help.
Hope something will help you.

Answer 3

I faced the same problem when I moved the project from mac to windows.
Adding the Jars (httpclient and httcore) solved the problem for me.
I refered it from the github solution issue-359