Cannot instantiate the type AppiumDriver

I have added following jars in my projects build path:

1. java-client-2.0.0 from http://appium.io/downloads.html >> Appium Client libraries >> Java
2. selenium-java-2.43.1
3. selenium-java-2.43.1-srcs

4. selenium-server-standalone-2.43.1

更改以后，就解决了