使用Java的Selenium Webdriver

Question

Why is the New keyword not needed when instantiating the WebElement class but not for the Select class in Selenium ? For WebElement:

WebElement username = driver.findElement(By.id(“Email”));

But for Select:

Select selectByValue = new Select(driver.findElement(By.id(“SelectID_One”)));

why the New keyword in Select and vice versa?

Answer 1

Because WebElement IS NOT a class it's an Interface reside in org.openqa.selenium which extends SearchContext and Select is Class

More info: You do not instantiate an Interface, just implementing them will have result. this will help you to understand

Answer 2

Cause findElement method itself returns WebElement object. See definition of By.class . And WebElement is an interface so you can't instantiate it.