java.lang.IllegalStateException: The path to the driver executable must be set by the webdriver.chrome.driver system property

Here is my code:

package Basics;

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

public class invokegoogle {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

    System.setProperty("Webdriver.chrome.driver", "C:\\Users\\sravani\\Desktop.exe");
    WebDriver driver=new ChromeDriver();
    driver.get("http://qaclickacademy.com");

    }

}

Getting the following errors:

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:754)
    at org.openqa.selenium.remote.service.DriverService.findExecutable(DriverService.java:124)
    at org.openqa.selenium.chrome.ChromeDriverService.access$000(ChromeDriverService.java:32)
    at org.openqa.selenium.chrome.ChromeDriverService$Builder.findDefaultExecutable(ChromeDriverService.java:137)
    at org.openqa.selenium.remote.service.DriverService$Builder.build(DriverService.java:329)
    at org.openqa.selenium.chrome.ChromeDriverService.createDefaultService(ChromeDriverService.java:88)
    at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:124)
    at Basics.invokegoogle.main(invokegoogle.java:12)

Any help is highly appreciated. Thanks in advance