How to use before in cucumber - selenium

Question

How can I use "before" to create the driver instance and launch Firefox in cucumber feature file.
I am familiar with background but never used before.

Answer 1

This example is taken from ToolsQA
Let’s do some easy and small example of Cucumber Hooks just to understand the concept.
Feature: Test Hooks
Scenario: This scenario is to test hooks functionality
Given this is the first step
When this is the second step
Then this is the third step
Step Definitions
package stepDefinition;
import cucumber.api.java.en.Given;
import cucumber.api.java.en.Then;
import cucumber.api.java.en.When;
public class Hooks_Steps {
#Given("^this is the first step$")
public void This_Is_The_First_Step(){
System.out.println("This is the first step");
}
#When("^this is the second step$")
public void This_Is_The_Second_Step(){
System.out.println("This is the second step");
}
#Then("^this is the third step$")
public void This_Is_The_Third_Step(){
System.out.println("This is the third step");
}
}
****Note***: There is no logic used in the step definitions. Just printing the step summary log.*
Now hooks come in the picture, in case of your scenario, you will like to initialize the driver here.
Hooks
package utilities;
import cucumber.api.java.After;
import cucumber.api.java.Before;
public class Hooks {
#Before
public void beforeScenario(){
System.out.println("This will run before the Scenario");
}
#After
public void afterScenario(){
System.out.println("This will run after the Scenario");
}
}
Make sure that the package import statement should be import cucumber.api.java.After; & import cucumber.api.java.Before;
Often people mistaken and import Junit Annotations, so be careful with this.
Output
Aparts from hooks, you can make use of other usefull annotations in Cucumber, please refer the tutorial on ToolsQA.com here.