Estou tentando configurar o selenium webdriver para trabalhar em conjunto com o Browserstack com Java para testes automatizados. Instalei o Selenium para java e copiei e colei o código do site browserstackhttps://www.browserstack.com/automate/java#configure-capabilities para configurar um exemplo de teste de automação.

Eu corrijavac -classpath selenium-server-standalone-2.48.2.jar JavaSample.java do meu terminal (JavaSample.java é o arquivo com o código de configuração selenium com o teste de amostra) e recebo o seguinte erro:

JavaSample.java:1: error: package org.openqa.selenium does not exist
import org.openqa.selenium.By;
                      ^
JavaSample.java:2: error: package org.openqa.selenium does not exist
import org.openqa.selenium.Platform;
                      ^
JavaSample.java:3: error: package org.openqa.selenium does not exist
import org.openqa.selenium.WebDriver;
                      ^
JavaSample.java:4: error: package ,org.openqa.selenium does not exist
import org.openqa.selenium.WebElement;
                      ^
JavaSample.java:5: error: package org.openqa.selenium.remote does not exist
import org.openqa.selenium.remote.DesiredCapabilities;
                             ^
JavaSample.java:6: error: package org.openqa.selenium.remote does not exist
import org.openqa.selenium.remote.RemoteWebDriver;
                             ^
JavaSample.java:18: error: cannot find symbol
DesiredCapabilities caps = new DesiredCapabilities();
^
symbol:   class DesiredCapabilities
location: class JavaSample
JavaSample.java:18: error: cannot find symbol
DesiredCapabilities caps = new DesiredCapabilities();
                               ^
symbol:   class DesiredCapabilities
location: class JavaSample
JavaSample.java:25: error: cannot find symbol
WebDriver driver = new RemoteWebDriver(new URL(URL), caps);
^
symbol:   class WebDriver
location: class JavaSample
JavaSample.java:25: error: cannot find symbol
WebDriver driver = new RemoteWebDriver(new URL(URL), caps);
                       ^
symbol:   class RemoteWebDriver
location: class JavaSample
JavaSample.java:27: error: cannot find symbol
WebElement element = driver.findElement(By.name("q"));
^
symbol:   class WebElement
location: class JavaSample
JavaSample.java:27: error: cannot find symbol
WebElement element = driver.findElement(By.name("q"));
                                        ^
symbol:   variable By
location: class JavaSample

Não sei bem como proceder, pois apenas segui as instruções no Browserstack e tenho muito pouco conhecimento em Java.