List<WebElement> allLinks = driver.findElements(By.tagName(LINKS_TAG));

String urlLink = link.getAttribute(LINKS_ATTRIBUTE);

URL url = new URL(urlLink);
HttpURLConnection httpURLConnect=(HttpURLConnection)url.openConnection();
httpURLConnect.setConnectTimeout(5000);
httpURLConnect.connect();

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.List;
public class FindAllBrokenLinks {
    public final String DRIVER_PATH = "Drivers/chromedriver";
    public final String DRIVER_TYPE = "webdriver.chrome.driver";
    public WebDriver driver;
    public final String BASE_URL = "https://www.bbc.com/";
    public final String LINKS_ATTRIBUTE = "href";
    public final String LINKS_TAG = "a";
    @BeforeTest
    public void beforeTest(){
        ChromeOptions options = new ChromeOptions();
        options.addArguments("--disable-notifications","--ignore-certificate-errors","--disable-extensions");
        System.setProperty(DRIVER_TYPE,DRIVER_PATH);
        driver = new ChromeDriver(options);
        driver.manage().window().maximize();
        driver.get(BASE_URL);
    }
    @Test
    public void FindAllBrokenLinks() throws Exception{
        List<WebElement> allLinks = driver.findElements(By.tagName(LINKS_TAG));
        for(WebElement link:allLinks){
            try {
                String urlLink = link.getAttribute(LINKS_ATTRIBUTE);
                URL url = new URL(urlLink);
                HttpURLConnection httpURLConnect=(HttpURLConnection)url.openConnection();
                httpURLConnect.setConnectTimeout(5000);
                httpURLConnect.connect();
                if(httpURLConnect.getResponseCode()>=400)
                {
                    System.out.println(urlLink+" - "+httpURLConnect.getResponseMessage()+"is a broken link");
                }
                else{
                    System.out.println(urlLink+" - "+httpURLConnect.getResponseMessage());
                }
            }catch (Exception e) {
            }
        }
    }
    @AfterClass
    public void CloseDriver(){
        driver.close();
    }
}