One of the key test case is to find broken links on a webpage. Due to existence of broken links, your website reputation gets damaged and there will be a negative impact on your business. It’s mandatory to find and fix all the broken links before release. If a link is not working, we face a message as 404 Page Not Found.
Let’s see some of the HTTP status codes.
  • 200 – Valid Link 
  • 404 – Link not found 
  • 400 – Bad request 
  • 401 – Unauthorized 
  • 500 – Internal Error

Here is the sample program to find broken links 

package com.selcukes.scripts;

import java.net.HttpURLConnection;
import java.net.URL;
import java.util.List;
import java.util.concurrent.TimeUnit;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;

public class BrokenLinks {
 public static WebDriver driver;

 public static void main(String args[]) {
  System.setProperty("webdriver.gecko.driver", "src/main/resources/geckodriver.exe");
  driver = new FirefoxDriver();
  driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
  driver.get("http://techyworks.blogspot.in/");
  String strPageTitle = driver.getTitle();
  System.out.println("Page Title:" + strPageTitle);
 links.stream().filter(link -> link.getAttribute("href") != null).forEach((link) ->; {
 isLinkBroken(link.getAttribute("href"));
  });

 }

 private static void isLinkBroken(String urlLink) {

  String response;
  try {

   URL link = new URL(urlLink);
   HttpURLConnection httpConn = (HttpURLConnection) link.openConnection();
   httpConn.setConnectTimeout(2000);
   httpConn.connect();
   response = httpConn.getResponseMessage();
   httpConn.disconnect();
   System.out.println("URL: " + urlLink + " - " + response);
  }

  catch (Exception e) {
   System.out.println("URL: " + urlLink + " - Invalid");
   e.printStackTrace();
  }
 }

}