Selenium - assert元素存在

from selenium import webdriver

driver = webdriver.Chrome()
driver.get("https://example.com")

try:
    element = driver.find_element_by_id("element_id")
    print("Element exists")
except NoSuchElementException:
    print("Element does not exist")

driver.quit()

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

public class SeleniumExample {
    public static void main(String[] args) {
        WebDriver driver = new ChromeDriver();
        driver.get("https://example.com");

        WebElement element = driver.findElement(By.id("element_id"));
        if (element.isDisplayed()) {
            System.out.println("Element exists");
        } else {
            System.out.println("Element does not exist");
        }

        driver.quit();
    }
}