When working with Selenium webdriver, why do we use a linked list to collect links or pop-up content using mutliple matches?

Question

The sample code is something like this (this question has been asked for me recently)

List of linksElements = driver.findElements (By.tagName ("a"));

Answer 1

The list represents an ordered list of objects, which means that you can access the list items in a specific order and index. You can also add the same item more than once to the list. The list allows null elements, and you can have many null objects in the list

You will get the whole result in a specific order one at a time. It also allows you to add duplicates. Our result may have duplicates, which are mainly necessary for automation, but if your requirements are different and you do not need duplicates, then you can use a different type of collection. If you use set, then it will not allow duplication and does not order the representation of the object.

List, , findElements() findElement(), , 1 ( ). List, , .

List : -

 List<WebElement> allOptions = dropDown.findElements(By."OUR Locator");
    for ( WebElement we: allOptions) { 
        dropDown.sendKeys( Keys.DOWN ); //simulate visual movement
        sleep(250);       
        if ( we.getText().contains( text ) ) select.selectByVisibleText("Value1");
    }

: -

https://sqa.stackexchange.com/questions/8029/how-to-iterate-a-list-of-webelements-and-print-the-values-one-by-one-to-perform

, , : -

http://java67.blogspot.in/2013/01/difference-between-set-list-and-map-in-java.html

, add(). Collection. :

List listA = new ArrayList();

listA.add("element 1");
listA.add("element 2");
listA.add("element 3");

, : -

String element0 = listA.get(0);
String element1 = listA.get(1);
String element3 = listA.get(2);

System.out.println(element0+" "+element1+" "+element3);

, :)

Answer 2

, List , . , , .

, . findElements() , , DOM, . .

, :)