Illegal State Exception with Gecko Driver [closed]

I am trying to execute following program but getting below error. Any idea how I can fix this?

package Test;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;


public class FirstSeleniumTest {
        public static void main(String[] args) {

    System.setProperty("webdriver.geko.driver","C:\\Users\\Shekhar Srivastav\\workspace\\SeleniumTest\\lib\\geckodriver\\geckodriver.exe");
                        WebDriver driver = new FirefoxDriver();
                driver.get("https://selenium.dev//");
                    driver.quit();
        }
}

Error:

Exception in thread "main" java.lang.IllegalStateException: The path to the driver executable must be set by the webdriver.gecko.driver system property; for more information, see https://github.com/mozilla/geckodriver.

The latest version can be downloaded from

https://github.com/mozilla/geckodriver/releases
    at com.google.common.base.Preconditions.checkState(Preconditions.java:847)
    at org.openqa.selenium.remote.service.DriverService.findExecutable(DriverService.java:134)
    at org.openqa.selenium.firefox.GeckoDriverService.access$100(GeckoDriverService.java:44)
    at org.openqa.selenium.firefox.GeckoDriverService$Builder.findDefaultExecutable(GeckoDriverService.java:167)
    at org.openqa.selenium.remote.service.DriverService$Builder.build(DriverService.java:355)
    at org.openqa.selenium.firefox.FirefoxDriver.toExecutor(FirefoxDriver.java:190)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:147)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:125)
    at Test.FirstSeleniumTest.main(FirstSeleniumTest.java:14)