Kéo và thả trong Selenium

package vn.viettuts.selenium;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.interactions.Action;
import org.openqa.selenium.interactions.Actions;

public class DropDragDemo {
    public static void main(String[] args) {

        System.setProperty("webdriver.chrome.driver", 
                "D:\\SeleniumWebdriver\\chromedriver.exe");
        WebDriver driver = new ChromeDriver();

        // Open website
        driver.get("http://www.keenthemes.com/preview/metronic/templates"
                + "/admin/ui_tree.html");
        
        // Maximize the browser
        driver.manage().window().maximize();
        
        WebElement from = driver.findElement(By.xpath(".//a[@id='j3_7_anchor']"));
        WebElement to = driver.findElement(By.xpath(".//a[@id='j3_1_anchor']"));
        
        Actions builder = new Actions(driver);
        Action dragAndDrop = builder.clickAndHold(from)
                .moveToElement(to).release(to).build();
        
        dragAndDrop.perform();
        // driver.close();
    }
}