Online shopping Click mobiles and it's looping the name

//Click mobiles and it's looping the name

import java.awt.AWTException;
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;
import org.openqa.selenium.interactions.Actions;

public class Cart_Content_Print_Name {
    public static void main(String[] args) throws AWTException {
        WebDriver driver = new FirefoxDriver();
        driver.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);
        driver.manage().window().maximize();
        driver.get("http://shopping.rediff.com/shopping/index.html");
        WebElement mobiles = driver.findElement(By.xpath("//span[text()='Mobiles']"));
        Actions act = new Actions(driver);
        act.moveToElement(mobiles).perform();
        act.moveToElement(driver.findElement(By.xpath("//a[text()='Mobile Handsets']"))).click().perform();
       
       
        List<WebElement> sets = driver.findElements(By.xpath("//div[@class='div_grid_display_big']"));
             
       
        for(int i=0; i<3; i++){
            sets.get(i).findElement(By.tagName("a")).click();
            driver.findElement(By.xpath("//input[@value='Buy now']")).click();
            if(i<2){
                driver.get("http://shopping.rediff.com/categories/mobile-handsets--new-/cat-8344/?sc_cid=fixcat_mobile%20handsets");
                sets = driver.findElements(By.xpath("//div[@class='div_grid_display_big']"));
            }
        }
       
            driver.switchTo().frame(driver.findElement(By.xpath("//iframe[@name='cartframe']")));   
           
           List<WebElement> cart = driver.findElements(By.xpath("//tr[@class='selected_graybg']//table[@style='width:800px;padding:8px 0px 0px 0px;']"));
            for(int j=0; j<cart.size(); j++){
                List<WebElement> rowstest=cart.get(j).findElements(By.tagName("tr"));
                for(WebElement r:rowstest)
                {
                    List<WebElement> cols=r.findElements(By.tagName("td"));
                    for(int k=0; k<cols.size(); k++)
                    {
                        if(k==0){
                            System.out.print(cols.get(k).findElement(By.tagName("a")).getText()+"  ");
                        }else if(k==1){
                            System.out.print(cols.get(k).findElement(By.tagName("input")).getAttribute("value")+"  ");
                        }else{
                            System.out.print(cols.get(k).getText()+"  ");
                        }   
                    }
                    System.out.println();
               }
            }
        }
       
}