How can I instantiate OperaDriver?

The OperaDriver can be instantiated as below:

WebDriver driver = new OperaDriver(); // Instantiate the class - com.opera.core.systems.OperaDriver

Sample code(Java Binding - Windows):

package tests;

import org.openqa.selenium.WebDriver;
import com.opera.core.systems.OperaDriver;

public class OperaDriverSample {
	
	public static void main(String[] argv) throws Exception {
		
				//Opera exe should be in %PROGRAMFILES%Operaopera.exe
		
				// Instantiate the OperaDriver 
				WebDriver driver = new OperaDriver();

				// Visit the Selenium-WebDriver FAQ site
				driver.get("http://seleniumwebdriverfaq.tumblr.com/");

				// Print the title of the page - It should print "Selenium-WebDriver FAQ's"
				System.out.println("Title of the page is: " + driver.getTitle());
				
				//Close the browser window
				driver.close();
				
				//Quit the driver
				driver.quit();

		}
			
	}