Google didn't want to pay licensing fees to Oracle so they wrote their own implementation of the entire Java language. Not only did they write their own implementation of the standard library, they wrote their own compiler and virtual machine. Does that make sense? I can see how my original statement was unclear.

I'm familiar with the background of the case, I just don't understand what you mean by, "took the syntax as well". Android programs are written in Java-the-language. That fact neither enlarges nor diminishes the severity of Google's actions here.