How to operate browser Cookies in Selenium Webdriver using java.

cookie: An HTTP cookie (also called web cookie, Internet cookie, browser cookie or simply cookie, the latter which is not to be confused with the literal definition), is a small piece of data sent from a website and stored in a user's web browser while the user is browsing that website.
We can perform required task with respect to browser cookies in Selenium Webdriver and can add , delete, delete particular cookie by passing the name.

Add Cookie
Method Name: addCookie(Cookie cookie)
Syntax: driver.manage().addCookie(arg0);
Description: To add a specific cookie into cookies. If the cookie's domain name is left blank, it is assumed that the cookie is meant for the domain of the current document.
Example:
Cookie name = new Cookie("firefoxcookie", "123456789123");
driver.manage().addCookie(name);

Get the Cookie with Specific Name
Method Name: getCookieNamed(java.lang.String name)
Syntax: driver.manage().getCookieNamed(arg0);
Description: To Get a cookie with a given name.
Example:
driver.manage().getCookieNamed("firefoxcookie");

Get Cookies
Method Name: getCookies()
Syntax: driver.manage().getCookies();
Description: Get all the cookies for the current domain.
Example:
Set<Cookie> cookiesList1 = driver.manage().getCookies();
for (Cookie getcookies : cookiesList1) {
System.out.println(getcookies);
}

Delete Cookie with Name
Method Name: deleteCookieNamed(java.lang.String name)
Syntax: driver.manage().deleteCookieNamed(arg0);
Description: Delete the named cookie from the current domain.
Example:
driver.manage().deleteCookieNamed("firefoxcookie");

Delete All Cookies
Method Name: deleteAllCookies()
Syntax: driver.manage().deleteAllCookies();
Description: It will delete all the cookies for the current domain.
Example:
driver.manage().deleteAllCookies();

Full Example

import java.util.Set; 
import java.util.concurrent.TimeUnit; 
import org.openqa.selenium.Cookie; 
import org.openqa.selenium.WebDriver; 
import org.openqa.selenium.firefox.FirefoxDriver; 
   
public class Handlecookie { 
 
public static void main(String args[]) { 
// Initialize Firefox Webdriver       
WebDriver driver = new FirefoxDriver(); 
//Maximize browser window        
driver.manage().window().maximize(); 
//Go to desire wbesite       
driver.get("http://www.google.com"); 
//Set  timeout       
driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS); 
 
//pass name and value for cookie as parameters 
Cookie name = new Cookie("firefoxcookie", "123456789123"); 
// Add Cookie 
driver.manage().addCookie(name); 
 
// Get the Cookie with Specific Name      
System.out.println(driver.manage().getCookieNamed("firefoxcookie")); 
   
System.out.println("============================="); 
//Get all Cookies 
Set<Cookie> cookiesList1 = driver.manage().getCookies(); 
for (Cookie getcookies : cookiesList1) { 
    System.out.println(getcookies); 
} 
System.out.println("======================"); 
  
// Delete Cookie with Name     
driver.manage().deleteCookieNamed("firefoxcookie"); 
 
System.out.println("========================="); 
//Check deleted or not firefoxcookie Cookie  
Set<Cookie> cookiesList2 = driver.manage().getCookies(); 
for (Cookie getcookies : cookiesList2) { 
    if (getcookies.getName().equals("firefoxcookie")) { 
System.out.println(driver.manage().getCookieNamed("firefoxcookie")); 
    } else { 
System.out.println("There is no cookies name firefoxcookie"); 
break; 
    } 
 
} 
 
System.out.println("=================="); 

 
//Delete all the cookies of the domain 
driver.manage().deleteAllCookies(); 
 
// Check all the cookies deleted or not 
Set<Cookie> cookiesList3 = driver.manage().getCookies(); 
if (cookiesList3.size() == 0) { 
    System.out.println("There are no cookies"); 
} 
 
//close firefox browser   
driver.quit(); 
    } 
}