How to Multiple Window Handling in Selenium WebDriver?

Sometimes the focus is still on the current browser, but when you try to do some operation, it will not work, and you will get some errors. You are getting such errors because the selenium webdriver is not able to uniquely identify the opened browser.

This is happening because when we open any browser window that time selenium webdriver assigns a unique value to that window for uniquely identify that window, but when multiple windows are opens that time selenium webdriver is not able to locate the browser window.

To Handle multiple browser windows, Selenium webdriver interface provides two methods, that are:

• getWindowHandle(): This method will return a string value of the current parent browsers window handle.
• getWindowHandles(): This method will return a set of all windows handles that are open in that session.

With these two methods, we can use the switchTo() method to switch from one window to another window by providing the different window handle.

Window Handling In Selenium

package com.selenium.switchto;
import java.util.ArrayList;
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;
public class Switchto_MultipleWindow 
{
   WebDriver driver=new FirefoxDriver();
   @BeforeTest
   public void open()
   {
      driver.manage().window().maximize();
      driver.get("http://popuptest.com/");
      driver.manage().timeouts().implicitlyWait(15000, TimeUnit.SECONDS);
      
   }
   @Test
   public void operation() throws InterruptedException
   {
      String parent=driver.getWindowHandle();
      driver.findElement(By.xpath("html/body/table/tbody/tr[2]/td[2]/table/tbody/tr[2]/td[1]/font[1]/b/a")).click();
      Thread.sleep(5000);
      ArrayList<String> handles=new ArrayList<String>(driver.getWindowHandles());
      System.out.println(handles.size());
      for(int i=0;i<handles.size() ;i++)
      {
         String str=handles.get(i).toString();
         if(str.equals(parent))
         {
            System.out.println(i+ "Parent Popup opened");
            System.out.println("This Is Your Parent Window");
            driver.switchTo().window(parent).close();
            System.out.println(i+ "Parent Popup closed");
         }
         else
         {
            System.out.println(i +"popup is opened");
            Thread.sleep(1000);
            driver.switchTo().window(str).close();
            System.out.println(i +"popup is closed");
         }			
      }
   }
}

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