Error - Not able to launch a browser

here is my code :-
package Practice;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.ie.InternetExplorerDriver;

public class LaunchBrowser {

public static void main(String[] args) throws ClassNotFoundException {

Class.forName("LaunchBrowser");
// Telling the system where to find the Chrome driver

WebDriver driver = new InternetExplorerDriver();

driver.get("http://www.google.co.in");
}

}
Error is : -

Exception in thread "main" java.lang.NoClassDefFoundError