1. 项目不会循环添加到 List 界面
2. 这个想法写私有字段“”从不分配问题：我不明白为什么它不向列表中添加元素

包ua.liebherr.pages.OtherPage；

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import utils.RandomMinMax;

import java.util.List;

public class LbhVisitedProduct {
public LbhVisitedProduct(WebDriver driver) {
    this.driver = driver;
}
private WebDriver driver;
private By visitedBlockLocator = By.xpath("*****");
private WebElement visitedBlock;
private By mainMenuItemsLocator = By.xpath("**********");
private List<WebElement> sliderElements;
private List<WebElement> subMenuItems;
private By subMenuItemsLocator = By.xpath("**************");

    public WebElement getVisited(){
        visitedBlock = driver.findElement(visitedBlockLocator);
        visitedBlock.sendKeys("");
        return visitedBlock;
    }

    public void goToRandomProducts(){
        sliderElements = driver.findElements(mainMenuItemsLocator);
        //int RandomItem = RandomMinMax.Go(1,sliderElements.size());
        System.out.println(sliderElements.size());
        sliderElements.get(RandomMinMax.Go(1,sliderElements.size())).click();
        sliderElements.clear();
        System.out.println(sliderElements.size());
        sliderElements = driver.findElements(subMenuItemsLocator);
        System.out.println(sliderElements.size());
        for(WebElement element:sliderElements){
            System.out.println("LOOP");
            if (element.isDisplayed()){
                System.out.println(subMenuItems.size()+"Try add");
                subMenuItems.add(element);
                System.out.println("Add element");
            }
        }
    }

}