automated testing – I’m automating coop web site and I am going through drawback whereas customizing XPath for add to cart button

I’ve custom-made an XPath for including a product which has low cost 30% for two. Now I’m going through drawback whereas including this into the cart.

bundle pattern;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Listing;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;

public class Coop_angebote {

    public static void principal(String[]args) throws InterruptedException{

        System.setProperty("webdriver.chrome.driver","C:Chromechromedriver.exe");
    ChromeOptions choices = new ChromeOptions();
     Map prefs = new HashMap();
      prefs.put("credentials_enable_service", false);
      prefs.put("password_manager_enabled", false); 
      choices.setExperimentalOption("prefs", prefs);
    choices.addArguments("start-maximized");
    choices.addArguments("disable-infobars");
    WebDriver driver = new ChromeDriver(choices);
    driver.handle().timeouts().implicitlyWait(50, TimeUnit.SECONDS);

    // For Login Performance

    driver.get("https://www.coopathome.ch/de?lang=de");
    driver.findElement(By.xpath("html/physique/div[2]/div/div[2]/nav[2]/div/ul/li[2]/a[1]/span")).click on();
    Thread.sleep(2000);
    driver.findElement(By.xpath("html/physique/div[1]/div[2]/div/div/div/div/div/div/type/div[3]/div/div/enter")).sendKeys("USERNAME");
    driver.findElement(By.xpath("html/physique/div[1]/div[2]/div/div/div/div/div/div/type/div[4]/div[2]/div/enter")).sendKeys("PASSWORD");
    driver.findElement(By.xpath("html/physique/div[1]/div[2]/div/div/div/div/div/div/type/div[6]/button")).click on();
    Thread.sleep(2000);
    driver.findElement(By.xpath("html/physique/div[3]/div/div[2]/div[2]/header/a")).click on();
    JavascriptExecutor jse = (JavascriptExecutor)driver;
    jse.executeScript("window.scrollBy(0,800)", "");

    Thread.sleep(1000);

    JavascriptExecutor jse1=(JavascriptExecutor)driver;
    jse1.executeScript("window.scrollBy(0,400)", "");

    Thread.sleep(1000);

    JavascriptExecutor jse2=(JavascriptExecutor)driver;
    jse2.executeScript("window.scrollBy(0,800)", "");

    Thread.sleep(1000);

    JavascriptExecutor jse3=(JavascriptExecutor)driver;
    jse3.executeScript("window.scrollBy(0,800)", "");

    Thread.sleep(1000);

    JavascriptExecutor jse4=(JavascriptExecutor)driver;
    jse4.executeScript("window.scrollBy(0,800)", "");

    Thread.sleep(1000);

    JavascriptExecutor jse5=(JavascriptExecutor)driver;
    jse5.executeScript("window.scrollBy(0,250)", "");

    Thread.sleep(1000);

    JavascriptExecutor jse6=(JavascriptExecutor)driver;
    jse6.executeScript("window.scrollBy(0,250)", "");

  //driver.findElement(By.xpath("//*[contains(text(),'30% ab 2')]")).click on();


    Listing var=driver.findElements(By.xpath("//*[contains(text(),'30% ab 2')]"));
    System.out.println(var.measurement());

    for(int i = 0;i<=var.measurement();i++){

         Listing li = new ArrayList();
         var.get(i).getText().trim();
         System.out.println("ACTUAL:'"+ var.get(i).getText().trim() + "'");
           if(var.get(i).getText().trim().equals("30% ab 2"))
           {
               driver.findElement(By.xpath("//*[@class="btn__inner"]")).click on();
               Thread.sleep(1000);
               System.out.println("IN iF:");
           }