StreamAPI

Ex.java

package org.example;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;

import java.util.*;

public class Refactoring {
  public static void main(String[] args) {
      WebDriver driver = new ChromeDriver();
      driver.get("https://www.wanted.co.kr/");
      
      List<WebElement> elements = driver.findElements(By.xpath("//ul[@class='Menu_className__gGcYQ']//li"));
      
      beforeImprovement(elements);

      driver.quit();
  }
  
  private static void beforeImprovement(List<WebElement> elements)
    {
        Set<String> set = new HashSet<>();
        for (WebElement element: elements)
        {
            String category = element.getText();
            if (category.length() > 0)
            {
                set.add(category);
                System.out.println(category);
                System.out.println(category.getClass().getName());
            }
        }
    }