如何在硒中打印列表数组的最后一个字符串值？

Question

There are multiple String element having same xpath. I have store elements in page object model using List<WebElement> mechanism. In my test case i want to print last string value of list.

Below is the code of elements stored in repository.

public Collection<WebElement> UpdatedMessageList(){
    Collection<WebElement> element=driver.findElements(By.xpath("//p[@class='msg-paragraph-panel msg-paragraph-msg ng-binding']"));
    return element;
}

Can anyone help me to print last string value from my test case?

Answer 1

findElements returns a List , not just any old Collection , so you could use a positional get(int) :

public WebElement UpdatedMessageList(){
    List<WebElement> elements = 
        driver.findElements(By.xpath(
            "//p[@class='msg-paragraph-panel msg-paragraph-msg ng-binding']"));
    if (elements.isEmpty()) {
        return null; // Or throw some meaningful exception
    }
    return elements.get(elements.size() - 1);
}

Answer 2

I am pretty much sure above code will give you compile error, not sure if you are using Java 9 and something has changed.

Also, Don't use genertic collection class, findElements returns List of WebElements

public WebElement UpdatedMessageList(){
    List<WebElement> element = driver.findElements(By.xpath("//p[@class='msg-paragraph-panel msg-paragraph-msg ng-binding']"));
    return element.get(element.size()-1);
}