selenium error after entering the header file web driver - selenium

Question

[header files[][1]1seelnium webdriver
error
Exception in thread "main" java.lang.NoClassDefFoundError: org/openqa/selenium/support/ui/Select (wrong name: org/openqa/selenium/support/ui/select)
Code tried:-
Select select = new Select(driver.findElement(By.cssSelector("body > app-root > app-patient-index > app-patient-profile > div.s_detail_doc_wrapper > div.s_patient_detail_tab > div > tabset > div > tab.active.tab-pane > form > div > div.s_patient_profile_form > div > div.col-md-9 > ul > li:nth-child(2) > div > div.col-md-9 > div > div.col-sm-5.pl0 > select")));
select.deselectAll();
select.selectByVisibleText("Married");
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Answer 1

Please use the below code to select the value from the dropdown.
Note: If the dropdown is of type select.
import to be used is.
import org.openqa.selenium.support.ui.Select;
System.setProperty("webdriver.chrome.driver","Drivers/chromedriver.exe");
WebDriver driver = new ChromeDriver();
driver.get("https://www.facebook.com/");
Thread.sleep(3000);
Select dayDropDown = new Select(driver.findElement(By.xpath("//select[#name='birthday_day']")));
dayDropDown.selectByVisibleText("5");

Answer 2

Missing Select class is found inside elenium-support jar which you are missing.
You can download jar directly for example for version 2.0a7 from :
http://central.maven.org/maven2/org/seleniumhq/selenium/selenium-support/2.0a7/selenium-support-2.0a7.jar
Or add maven dependencies
<!-- https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium-support -->
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-support</artifactId>
<version>2.0a7</version>
</dependency>