Many chromedriver.exe are left hanging on Windows Selenium

The Selenium WebDriver is closed, but the “chromedriver.exe” process is left hanging in the system. See figure :

Problem

Here is the code, a simple WebDriver example to load a URL and exists, but the chromedriver.exe never get killed.

package com.mkyong.test;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.remote.DesiredCapabilities;
public class LoadWebPageExample {
	public static void main(String[] args) {
		System.setProperty("webdriver.chrome.driver", "D:\\chromedriver.exe");
		ChromeOptions options = new ChromeOptions();
		options.addArguments("window-size=800,600");
		DesiredCapabilities capabilities = DesiredCapabilities.chrome();
		capabilities.setCapability(ChromeOptions.CAPABILITY, options);
		WebDriver driver = new ChromeDriver(capabilities);
		driver.get("http://google.com/");
		driver.close();

Solution

This is a common mistake, to solve it, uses driver.quit() to end the automated test.

package com.mkyong.test;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.remote.DesiredCapabilities;
public class LoadWebPageExample {
	public static void main(String[] args) {
		System.setProperty("webdriver.chrome.driver", "D:\\chromedriver.exe");
		ChromeOptions options = new ChromeOptions();
		options.addArguments("window-size=800,600");
		DesiredCapabilities capabilities = DesiredCapabilities.chrome();
		capabilities.setCapability(ChromeOptions.CAPABILITY, options);
		WebDriver driver = new ChromeDriver(capabilities);
		driver.get("http://google.com/");
		//driver.close();
		driver.quit();

References

1. Selenium – WebDriver Documentation
2. Selenium – WebDriver JavaDoc
3. Selenium – ChromeDriver