The second way to create a listener class is by extending the AbstractWebDriverEventListene r class. AbstractWebDriverEventListener is an abstract class that implements WebDriverEventListener. Though it doesn't really provide any implementation for the methods in the WebDriverEventListener interface, it creates a dummy implementation such that the listener class that you are creating doesn't have to contain all the methods, only the ones that you, as a test-script developer, are interested in. The following is a class we have created that extends AbstractWebDriverEventListener and provides implementations for a couple of methods in it. This way, we can override only the methods that we are interested in rather than all of the methods in our class:

package com.example;

import org.openqa.selenium.WebDriver;
import    org.openqa.selenium.support.events.AbstractWebDriverEventListener;

public class IAmTheEventListener2 extends AbstractWebDriverEventListener {

    @Override
    public void beforeNavigateTo(String url, WebDriver driver) {
        System.out.println("Before Navigate To "+ url);
    }
    @Override
    public void beforeNavigateBack(WebDriver driver) {
        System.out.println("Before Navigate Back. Right now I'm at "
                + driver.getCurrentUrl());
    }
}