Unable to switch into third window - Selenium

Question

I'm using below code to switch into windows :

    Set<String> handle=driver.getWindowHandles();
    System.out.println(handle);
    Iterator<String> it=handle.iterator();

    String parent=it.next();
    System.out.println("parent window =" +parent);
    String child=it.next();

    System.out.println("second child window =" +child);
    driver.switchTo().window(child);
    driver.findElement(By.xpath("//*[@id=\"fixHeader\"]/tbody/tr[2]/td[4]/a/span")).click();

    Thread.sleep(3000);
    String child2=it.next();
    System.out.println("Third child window =" +child2);
    driver.switchTo().window(child2); 

But getting below exception :

Exception in thread "main" org.openqa.selenium.NoSuchElementException: no such element: Unable to locate element: {"method":"id","selector":"stylenumberH"}

Answer 1

This function is for switching from 2nd window to 3rd window.

public static void switchTo_Third_Window(){

 Set<String> lastWindow = driver.getWindowHandles();
 try {
 int l = lastWindow.size() - 1;

 int inc = -1;
 for (String win : lastWindow) {

 inc++;

 if (inc == l) {
 driver.switchTo().window(win);

 driver.manage().window().maximize();

 System.out.println(driver.getTitle());

 }

 }
 }
 catch (Exception e)
 {


 }

}

Answer 2

Used below code to switch into the windows :

//Get current window 
String currentWindow = driver.getWindowHandle();

//Get all opened windows list
ArrayList tabs = new ArrayList (driver.getWindowHandles());

// print the count of windows
System.out.println(tabs.size());

//Now you can switch into desired window in your case you want to switch into 3rd one so you have to pass the index 2 as it started from 0
driver.switchTo().window(tabs.get(2));

// now perform the click 
driver.findElement(By.xpath("//*[@id=\"fixHeader\"]/tbody/tr[2]/td[4]/a/span")).click();

Thread.sleep(3000);

//Switch back to original window
driver.switchTo().window(currentWindow);

Answer 3

Use this below code. You will be able to switch to the new window.

    String Parent_Window = driver.getWindowHandle();
    Set<String> AllWindows = driver.getWindowHandles();
    for (String Child : AllWindows) {
        if (!Parent_Window.equalsIgnoreCase(Child)) {
                driver.switchTo().window(Child);