Java Book或Website（如Cplusplus.com），供C ++程序员快速学习java

I am looking for a book which teaches Java very fast. Basically I am a C++ programmer and do not need to know each and every aspect of programming. I am learning java for android apps development. A lot of books like thinking in Java, learning java and others suggested are pretty big and I want something small to get me going. A website like I am looking for a book which teaches Java very