Integrating android jar file with Unity .?

I’m using Unity Basic version 4.2.2,

  1. Is there any way to add the jar file (for advertisement ) to the simple project in unity.
  2. Through docs , external jar file is supported only in Unity pro …? then how can i use it in Unity basics. is there any way… kindly guide me here.
  3. Project code was written in C# . kindly guide me how to integrate it with jar. ?

Thanks in Advance.

“Integrating android jar file”, do you mean “Plugin for Anroid”? ( Unity - Manual: Create and use plug-ins in Android )

P/s: If your product is for Android/Iphone, Plugin feature is available in Unity Free. If your target is Pc, Mac, Linux, … this feature is only available in Unity Pro.