How to drag and drop the files or folders using selenium scripts?

dragAndDropBy() method name tells by the name itself.  We can easily use this method to drag and drop the files/folders from one location to another location.

JAVA API Syntax : public Actions dragAndDropBy(WebElement src, int xOffset,int yOffset)

I have written the below code for example using drive.google.com.  Codes are written to hold the file with cursor movement and place it to another folder.

Code:

import java.util.List;
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.By;
import org.openqa.selenium.Keys;
import org.openqa.selenium.Point;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.interactions.Actions;

public class DragAndDropByMethod
{
public static void main(String... args) throws InterruptedException
{

//Invoke FirefoxBrowser 
WebDriver dr = new FirefoxDriver();

//Login drive.google.com with user id and password
dr.get("https://www.drive.google.com");
dr.findElement(By.id("Email")).sendKeys("onlytest628");
dr.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);
dr.findElement(By.id("next")).click();
dr.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);
dr.findElement(By.id("Passwd")).sendKeys("steverock@123");
Thread.sleep(1000);
dr.findElement(By.id("signIn")).click(); 
Thread.sleep(5000);

//Assign the webelement into variables
WebElement xyAxisPoint = dr.findElement(By.className("k-v-ta-za-Ln-vd"));
WebElement moveHere = dr.findElement(By.className("k-ta-P-x"));

System.out.println(moveHere.getLocation());

//wait for 2 seconds
dr.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);


Actions builder = new Actions(dr);
//builder.dragAndDropBy(xyAxisPoint, moveHere.getLocation().x, 
//moveHere.getLocation().y)

//drag the files and drop at X&Y axis location of the folder
builder.dragAndDropBy(xyAxisPoint, moveHere.getLocation().getX(), 
moveHere.getLocation().getY())
.perform();
}
}