Not download/init browser driver when used webdrivermanager-x.x.x.jar (without Maven)

Question

For my Selenium/Java project [without Maven], using webdrivermanager-1.7.2.jar in to automate binary downloads for chromedriver but I'm getting "java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory" message. My code:

package selenium_webdriver_api;
import java.util.concurrent.TimeUnit;

import org.junit.After;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;

import io.github.bonigarcia.wdm.ChromeDriverManager;

public class Topic_29_ManageBrowserVersion {

    private WebDriver driver;

    @BeforeClass
    public static void setupClass() {
        ChromeDriverManager.getInstance().version("2.33").setup();
        // Or: ChromeDriverManager.getInstance().setup();
    }

    @Before
    public void setupTest() {
        driver = new ChromeDriver();
    }

    @After
    public void teardown() {
        if (driver != null) {
            driver.quit();
        }
    }

    @Test
    public void test() {
        driver.get("https://github.com/bonigarcia/webdrivermanager");
        driver.manage().timeouts().implicitlyWait(15, TimeUnit.SECONDS);
        driver.manage().window().maximize();
    }
}

Answer 1

WebDriverManager depends on several libraries such as slf4j-api, commons-io, gson, among others (see its pom.xml for the complete list). If you are using WebDriverManager without the help of a build tool (e.g. Maven, Gradle) you need to resolve these dependencies manually. The other option is to generate a fat jar from the source, for example using the maven-assembly-plugin (info here) or maven-shade-plugin (info here).