Handling Bootstrap Dropdowns in Selenium

Handling dropdowns usually involves 4+ lines of code and there are chances of code duplication. Below is the code which makes it easier for us to handle all kinds of dropdowns (single select, multi select, starting with //select tag, starting with //div or other tags etc.) in 2 lines.

Below is the code:

package com.qa.TestCase;

import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.testng.annotations.Test;

import io.github.bonigarcia.wdm.WebDriverManager;

public class HandleBootStrapDropDownUsingStreams 
{
    public static WebDriver driver;

    @Test
    public void bootStrap() throws InterruptedException
    {
        WebDriverManager.chromedriver().setup();
        driver = new ChromeDriver();
        driver.manage().window().maximize();
        driver.manage().deleteAllCookies();

        driver.manage().timeouts().pageLoadTimeout(30, TimeUnit.SECONDS);
        driver.manage().timeouts().implicitlyWait(15, TimeUnit.SECONDS);

        driver.get("https://www.jquery-az.com/boots/demo.php?ex=63.0_2");

        driver.findElement(By.xpath("//button[@class='multiselect dropdown-toggle btn btn-default']")).click();

        By bootStrapDropDown = By.xpath("//ul[contains(@class,'multiselect-container')]//li//a//label");

        HandleBootStrapDropDownUsingStreams.printBootStrapDropDownValues(bootStrapDropDown);

        HandleBootStrapDropDownUsingStreams.selectValueFromBootStrapDropDown(bootStrapDropDown, "HTML");
        HandleBootStrapDropDownUsingStreams.selectValueFromBootStrapDropDown(bootStrapDropDown, "CSS");
        HandleBootStrapDropDownUsingStreams.selectValueFromBootStrapDropDown(bootStrapDropDown, "Angular");

    }

    //Function to Select a Value from BootStrap Drop Down using Streams.
    public static void selectValueFromBootStrapDropDown(By locator, String value)
    {
        List<WebElement> dropDownValues = driver.findElements(locator);
        dropDownValues.stream().filter(values -> values.getText().matches(value)).forEach(values -> values.click());
    }

    //Function to Print BootStrap Drop Down Values using Streams.
    public static void printBootStrapDropDownValues(By locator)
    {
        List<WebElement> dropDownValues = driver.findElements(locator);
        dropDownValues.stream().map(values -> values.getText()).collect(Collectors.toList()).forEach(values -> System.out.println(values));
    }
}