java - The path to the driver executable must be set by the webdriver.gecko.driver system property; -

i using selenium 3.3.1 , i'm testing code below.

after running following error displayed:

exception in thread "main" java.lang.illegalstateexception: path driver executable must set webdriver.gecko.driver system property; more information, see https://github.com/mozilla/geckodriver. latest version can downloaded https://github.com/mozilla/geckodriver/releases @ com.google.common.base.preconditions.checkstate(preconditions.java:738) @ org.openqa.selenium.remote.service.driverservice.findexecutable(driverservice.java:111) @ org.openqa.selenium.firefox.geckodriverservice.access$100(geckodriverservice.java:38) @ org.openqa.selenium.firefox.geckodriverservice$builder.finddefaultexecutable(geckodriverservice.java:112) @ org.openqa.selenium.remote.service.driverservice$builder.build(driverservice.java:302) @ org.openqa.selenium.firefox.firefoxdriver.toexecutor(firefoxdriver.java:233) @ org.openqa.selenium.firefox.firefoxdriver.(firefoxdriver.java:125) @ org.openqa.selenium.firefox.firefoxdriver.(firefoxdriver.java:121) @ selenium_login.(selenium_login.java:13) @ selenium_login.main(selenium_login.java:70) /home/ali/.cache/netbeans/dev/executor-snippets/run.xml:53: java returned: 1 build failed (total time: 0 seconds)

java code:

import java.io.*; import org.apache.commons.io.fileutils; import org.openqa.selenium.by; import org.openqa.selenium.outputtype; import org.openqa.selenium.takesscreenshot; import org.openqa.selenium.webdriver; import org.openqa.selenium.webelement; import org.openqa.selenium.firefox.firefoxdriver;  public class selenium_login {      public webdriver driver = new firefoxdriver();      /**      * open test website.      */     public void opentestsite() {         driver.navigate().to("http://testing-ground.scraping.pro/login");     }      /**      *       * @param username      * @param password      *       *            logins website, entering provided username ,      *            password      */     public void login(string username, string password) {          webelement username_editbox = driver.findelement(by.id("usr"));         webelement password_editbox = driver.findelement(by.id("pwd"));         webelement submit_button = driver.findelement(by.xpath("//input[@value='login']"));          username_editbox.sendkeys(username);         password_editbox.sendkeys(password);         submit_button.click();      }      /**      * grabs status text , saves status.txt file      *       * @throws ioexception      */     public void gettext() throws ioexception {         string text = driver.findelement(by.xpath("//div[@id='case_login']/h3")).gettext();         writer writer = new bufferedwriter(new outputstreamwriter(new fileoutputstream("status.txt"), "utf-8"));         writer.write(text);         writer.close();      }      /**      * saves screenshot      *       * @throws ioexception      */     public void savescreenshot() throws ioexception {         file scrfile = ((takesscreenshot) driver).getscreenshotas(outputtype.file);         fileutils.copyfile(scrfile, new file("screenshot.png"));     }      public void closebrowser() {         driver.close();     }      public static void main(string[] args) throws ioexception {         selenium_login websrcapper = new selenium_login();         websrcapper.opentestsite();         websrcapper.login("admin", "12345");         websrcapper.gettext();         websrcapper.savescreenshot();         websrcapper.closebrowser();     } } 

you need use geckodriver interact firefox since selenium 3.0. download geckodriver github depending upon os , extract geckodriver.exe folder.

add following line before initializing webdriver:

system.setproperty("webdriver.gecko.driver","c:/your/path/to/geckodriver.exe"); webdriver driver = new firefoxdriver(); ...