Exception in thread "main" java.lang.IllegalStateException:The path to the driver executable must be set by the : system property

Question

Exception in thread "main" java.lang.IllegalStateException : The path to the driver executable must be set by the webdriver.chrome.driver system property; for more information, see https://github.com/SeleniumHQ/selenium/wiki/ChromeDriver. The latest version can be downloaded from http://chromedriver.storage.googleapis.com/index.html  
at com.google.common.base.Preconditions.checkState(Preconditions.java:199)  
at org.openqa.selenium.remote.service.DriverService.findExecutable(DriverService.java:109)  
at org.openqa.selenium.chrome.ChromeDriverService.access$0(ChromeDriverService.java:1)  
at org.openqa.selenium.chrome.ChromeDriverService$Builder.findDefaultExecutable(ChromeDriverService.java:137)   at org.openqa.selenium.remote.service.DriverService$Builder.build(DriverService.java:296)   
at org.openqa.selenium.chrome.ChromeDriverService.createDefaultService(ChromeDriverService.java:88)     at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:116)    
at practise_locators.DatePicker.main(DatePicker.java:11)

Here is my code:

package practise_locators;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;

public class DatePicker {

    public static void main(String[] args){
        WebDriver driver = new ChromeDriver();
        System.setProperty("WebDriver.Chrome.driver", "E:\\chromedriver.exe");
        driver.get("https://www.google.com");
    }

}

Answer 1

The error says it all :

Exception in thread "main" java.lang.IllegalStateException : The path to the driver executable must be set by the webdriver.chrome.driver system property; for more information, see https://github.com/SeleniumHQ/selenium/wiki/ChromeDriver. The latest version can be downloaded from http://chromedriver.storage.googleapis.com/index.html  
at com.google.common.base.Preconditions.checkState(Preconditions.java:199) 

The following phrases from the error implies that there is an error in the line containing webdriver.chrome.driver

The error can be either of the following :

• Error in the System Class Method setProperty()(including sequence) :

  System.setProperty()
  

  This line should be the very first line in your script.

• Error in the specified Key :

  "WebDriver.Chrome.driver"
  

• Error in the Value field :

  "E:\\chromedriver.exe"
  

  You have to pass the absolute path of the WebDriver through either of the following options :

  • Escaping the back slash (\\) e.g. "C:\\path\\to\\chromedriver.exe"
  • Single forward slash (/) e.g. "C:/path/to/chromedriver.exe"

Your code seems to be having two issues as follows :

• First issue is in specifying the Key which instead of "WebDriver.Chrome.driver" should have been "webdriver.chrome.driver" as follows :

  System.setProperty("webdriver.chrome.driver", "E:\\chromedriver.exe");
  

• Second issue is in the sequence of mentioning the Key "webDriver.chrome.driver" in your program which should be before WebDriver driver = new ChromeDriver(); as follows :

  System.setProperty("WebDriver.Chrome.driver", "E:\\chromedriver.exe");
  WebDriver driver = new ChromeDriver();
  driver.get("https://www.google.com");