继承类中的泛型和构造函数

Question

guys. I am a QA tester and I keep learning automation with Selenium and Java. I can not understand why do I need to add generics and constructor in the class ProfilePage? So lets create Page Object class:

public class BasePageObject {

protected WebDriver driver; 

protected void getPage(String url){
    driver.get(url);

}

private WebElement find(By element) {
    return driver.findElement(element);
}   

protected void type(String text, By element){
    find(element).sendKeys(text);
} 
}

Now lets create class for profile page:

public class ProfilePage extends BasePageObject<ProfilePage> {

private By editProfileButton = By.xpath("//button[@id='editProfile']");
private By advancededitProfileButton = By.xpath("//a[@class='dice-btn-link']");
private By profileContactNameText = By.xpath("//h1[@class='profile-contact-name']");

protected ProfilePage(WebDriver driver) {
    super(driver);
}



public boolean isCorrectProfileLoaded(String correctProfileName){
    if (getText(profileContactNameText).equals(correctProfileName)){
    return true;
}else
    return false;
    } 
 }

So the question is: why should I use generics "ProfilePage" "after extends BasePageObject" and why do I have to create protected ProfilePage(WebDriver driver) { super(driver); } protected ProfilePage(WebDriver driver) { super(driver); }

Thanks!

Answer 1

I think your doubts are justified. As far as seleniums BasePageObject is concerned, it has no type parameter and it has no constructor that would expect a WebDriver parameter.

Is it possible that there is another BasePageObject in a package other than com.wikia.webdriver.pageobjectsfactory.pageobject ?

If yes, then that's a reason. It's a bit confusing though.
Otherwise this ProfilePage just won't compile.