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Selenium getText() returns empty string

Just started studying Selenium. I have a problem. Сan't get text. getText() returns empty string. getAttribute() returns null.
The getText() is used on a HTML element that looks like this:
first element:
<span _ngcontent-enu-c116="" class="line-chart-tab-value ng-star-inserted"> 2 807,60 $ </span>
second element:
<span _ngcontent-enu-c116="" class="line-chart-tab-value ng-star-inserted"> 200,00 $ </span>
find by xpath:
WebElement sale = (By.xpath("//label[1]//span[#class='line-chart-tab-value ng-star-inserted']")));
System.out.println("Sale=" + sale.getText());
WebElement saleReturn= driver.findElement((By.xpath("//label[2]//span[#class='line-chart-tab-value ng-star-inserted']")));
System.out.println("Return=" + saleReturn.getText());
I would be grateful for any help.

List<WebElement> Ele = driver.findElements(By.xpath("//span[#class='line-chart-tab-value ng-star-inserted']"));
for(int i=0;i<Ele.size();i++) {
System.out.println("Sale "+Ele.get(0).getText());
System.out.println("Return "+Ele.get(1).getText());
}

How to check if a pseudo element exists or not through selenium

I need to know whether we can find the existence of a pseudo element like ::after and ::before
My aim is just to return true or false if it is present.
However it cannot be done using:
browser.driver.findElements(by.id('id')).size != 0
or
return !driver.findElements(by).isEmpty();
becasue they are psuedo elements and cannot be located through any CS or XPATH locators
Here is my HTML having ::after
<div class="parent-class">
<span class="child-class">Archive
::after
</span>
::after
</div>
Here is my HTML without having ::after
<div class="parent-class">
<span class="child-class">Archive
::after
</span>
</div>
Note: I need to verify only the ::after in DIV tag but not in SPAN tag

Yes, the pseudo-elements cannot be located by paths or CSS locators.
However, as an alternative, you can extract the inner HTML of the parent element and validate if it contains the "::after" text.
There are two ways of doing this. For the above scenario,
WebElement element = browser.driver.findElement(By.className('parent-class'))
String innerHTMLText = element.getAttribute('innerHTML');
if (innerHTMLText.contains("::after")){
// Bingo !!
}
Or else
WebElement element = browser.driver.findElement(By.className('parent-class'))
JavascriptExecutor js = (JavascriptExecutor)driver;
String innerHTMLText = js.executeScript("return arguments[0].innerHTML;", element);
if (innerHTMLText.contains("::after")){
// Bingo !!
}
EDIT 1
If you need to verify if only the div tag is having the pseudo-element you can get the span tag's HTML, get parent tag's HTML, remove span tag inner HTML from parent tag's HTML. Verify.
String divHTMLText = browser.driver.findElement(By.className('parent-class')).getAttribute('innerHTML');
String spanHTMLText = browser.driver.findElement(By.className('child-class')).getAttribute('innerHTML');
// replace all the whitespaces first for good measure
divHTMLText = divHTMLText.replaceAll("\\s+","")
spanHTMLText = spanHTMLText.replaceAll("\\s+","")
// replace the child html from parent's html with empty. which leaves us with the parent html code.
String divOnlyHTML = divHTMLText.replace(spanHTMLText, "");
if (divOnlyHTML.contains("::after")){
// Bingo !!
}

how to display span class field

i am trying to display two "text text-pass" from html in chrome browser to my print console, apparently, it did not work, any advise please?
my browser html code
<a href="/abc/123" class="active">
<div class="sidebar-text">
<span class="text text-pass"> </span> </a>
<a href="/abc/1234" class="active">
<div class="sidebar-text">
<span class="text text-pass"> </span> </a>
My code
String 123= driver.findElement(By.xpath("//*[#id="js-app"]/div/div/div[2]/div[1]/div/div/ul/li[5]/a")).getText();
System.out.println(123);
String 1234= driver.findElement(By.xpath("//*[#id="js-app"]/div/div/div[2]/div[1]/div/div/ul/li[5]/a")).getText();
System.out.println(1234);

You can use .findElements to get multiple elements with the same pattern, it will return a list collection.
UPDATE
Refers to your comment, you need put the string into a list again and check with the Collection.contains() method:
List<String> results = new ArrayList<>();
List<WebElement> elements = driver.findElements(By.xpath("//div[#class='sidebar-text']//span"));
for(WebElement element: elements) {
String attr = element.getAttribute("class");
results.add(attr);
System.out.println(attr);
}
if(results.contains("text text-fail")) {
System.out.println("this is list contains 'text text-fail'");
}

Try this Code :
String pass = driver.findElement(By.xpath("//*[#class='sidebar-text']/span")).getAttribute("class");
System.out.println(pass);

Selenium Webdriver (Java) - selecting specific element depending on the condition

I have HTML code like :
<div class="ex1">
<div class="ex2">
<span>test1</span>
<span class="ex3">test2</span>
</div>
<div class="ex2">
<span>test3</span>
<span class="ex3">test2</span>
</div>
</div>
I'm using Selenium Webdriver.
And I need to create Java code which could:
If <span>test3 then select a <span class="ex3"> which located inside the same div class="ex2"
But since I have div's and spans with the same className inside one main I can't differ this spans..
Could you help me please with this issue?
So,something like this:
If <span>test3 then <span class=ex3>test2.
or
If <span>test1 then <span class=ex3>test2.
Thanks

1- Use this xpath to get to <span>test1 then <span class=ex3>test2:
//span[.='test1']/following-sibling::span[.='test2']
And, use in code like this:
WebElement ele = driver.findElement(By.xpath("//span[.='test1']/following-sibling::span[.='test2']"));
2-And, Use this xpath to get to <span>test3 then <span class=ex3>test2:
//span[.='test3']/following-sibling::span[.='test2']
Use in code like this:
WebElement ele = driver.findElement(By.xpath("//span[.='test3']/following-sibling::span[.='test2']"));

I have implemented the If statement as per your question in practice you can modify it as per your requirement.
WebElement test1_class1 =wait.until(ExpectedConditions.elementToBeClickable(By.xpath("//div[#class='ex1']//div[1]//span[1]")));
String test1= test1_class1.getText();
WebElement test2_class1 =wait.until(ExpectedConditions.elementToBeClickable(By.xpath("//div[#class='ex1']//div[1]//span[2]")));
String test2_1 =test2_class1.getText();
WebElement test3_class2 =wait.until(ExpectedConditions.elementToBeClickable(By.xpath("//div[#class='ex1']//div[2]//span[1]")));
String test3 =test3_class2.getText();
WebElement test2_class2 =wait.until(ExpectedConditions.elementToBeClickable(By.xpath("//div[#class='ex1']//div[2]//span[2]")));
String test2_2 =test3_class2.getText();
try
{
if(test1.equals("test1"))
{
System.out.println(test2_1);
}
if(test3.equals("test3"))
else
{
System.out.println(test2_2);
}
}
catch(Throwable e)
{
System.out.println("Exception in program"+e);
}

GetValue (JSoup)

<div class="Class-feedbacks">
<div class="grading class2">
<div itemtype="http://xx.edu/grading" itemscope="" itemprop="studentgrading">
<div class="rating">
<img class="passportphoto" width="1500" height="20" src="http://greg.png" >
<meta content="4.0" itemprop="gradingvalue">
</div>
</div>
<meta content="2012-09-08" itemprop="gradePublished">
<span class="date smaller">9/8/2012</span>
</div>
<p class="review_comment feedback" itemprop="description">Greg is one the smart person in his batch</p>
</div>
I want to print:
date: 2012-09-08
Feedback : Greg is one the smart person in his batch
I was able to use this as suggested at - Jsoup getting a hyperlink from li
The doc.select(div div divn li ui ...) and get the class feedback.
How should I use the select command to get the values of the above values?

To get the value of an attribute, use the attr method. E.g.
Elements elements = doc.select("meta");
for(Element e: elements)
System.out.println(e.attr("content"));

In one single select ...have you tried the comma Combinator "," ?
http://jsoup.org/apidocs/org/jsoup/select/Selector.html
Elements elmts = doc.select("div.Class-feedbacks meta, p")
Element elmtDate = elmts.get(0);
System.out.println("date: " + elmtDate.attr("content"));
Element elmtParag = elmts.get(1);
System.out.println("Feedback: " + elmtParag.text());
You should get back 2 elements in your list the date and the feedback after the select.

This is an old question and I might be late, but if anyone else wants to know how to do this easily, the below code will be helpful.
Document doc = Jsoup.parse(html);
// We select the meta tag whose itemprop property has value 'gradePublished'
String date = doc.select("meta[itemprop=gradePublished]").attr("content");
System.out.println("date: "+date);
// Now we select the text inside the p tag with itemprop value 'description'
String feedback = doc.select("p[itemprop=description]").text();
System.out.println("Feedback: "+feedback);