Can I code in Java unity?
I am fairly new to Unity3D experience , but I have a very good knowledge of Java and Android development. I am really confused if Java is at all needed for developing android applications? I read somewhere in Unity documentation that adding behaviour to objects in Unity requires use of scripts, and that unity only supports C# , .Net , and Boo scripts. Is there no use of Java at all?
Java unity is not supported by Unity. You should check out C#, however; it's a very similar language that takes a lot of influence from Java while arguably smoothing out some of the rougher edges of the language. It should also be noted that you will need both Unity Pro and Unity Android Pro in order to create Android games using Unity. As hocking and ashes999 note in the comments, you don't need Unity Pro and Unity Android Pro to release commercial Unity games on Android.