Real time scenario to check item added to cart or not.

Scenario-

1. Browse and open http://www.infibeam.com as a input data from excel sheet...
2. Navigate to all stores then mobiles and select mobiles type...
3. Then enter blackberry in search box and click on search...
4. select price range 10000 to 18000...
5. select displayed mobile, and write model name and price in a Textfile....
and check the product Instock or not,if it is Instock then click on Buy Now...(write Reusable script)
6. check it is added in to the cart or not...
7. Close the Browser.
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.TimeUnit;

import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.interactions.Actions;

public class Siva {
public static void main(String[] args) throws InvalidFormatException, IOException{
String url = getData(0,0);
WebDriver driver = new FirefoxDriver();
driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
driver.get(url);
WebElement mob = driver.findElement(By.xpath("//span[text()='Mobiles & Tablets']"));
Actions act = new Actions(driver);
act.moveToElement(mob).perform();
WebElement type = driver.findElement(By.linkText("Mobile Type"));
act.moveToElement(type).click().perform();
driver.findElement(By.id("suggest")).sendKeys("blackberry");
driver.findElement(By.xpath("//form[@id='srchForm']//input[@value='Search']")).click();
driver.findElement(By.xpath("//a[@title='10000-18000']")).click();
List<WebElement> model = driver.findElements(By.xpath("//span[@class='title']"));
List<WebElement> price = driver.findElements(By.xpath("//div[@class='price']"));
FileWriter fileWriter = new FileWriter("out.txt");
BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
bufferedWriter.write("model "+"\t\t\t\t\t"+"price"+"\n");

for(int i=0; i<model.size(); i++){
bufferedWriter.write(model.get(i).getText()+"\t"+price.get(i).getText()+"\n");
}
bufferedWriter.close();

model.get(0).click();
driver.findElement(By.xpath("//input[@value='Buy Now']")).click();
String quantity = driver.findElement(By.xpath("//div[@class='quantity']/div")).getText();
int n = Integer.parseInt(quantity);
if(n==1){
System.out.println("phone has been added to cart");
}
driver.close();
}
public static String getData(int row, int cell) throws InvalidFormatException, IOException{
FileInputStream fis = new FileInputStream("./InputData.xlsx");
Workbook wb = WorkbookFactory.create(fis);
String value = wb.getSheet("Sheet3").getRow(row).getCell(cell).getStringCellValue();
return value;
}
}