What's the difference between odd and even Java updates?

Question

I have JDK 8u60 installed. I checked the Oracle website today and they have released two versions simultaneously: 8u65 and 8u66. Both are public release versions.

Answer 1

If you have an existing project use 8u65. If you are starting one from scratch use 8u66. I'm installing NetBeans 8.1 so I'm using 8u66 in case NB8.1 code has any of the 15 bugs in 8u65 which are not solved in 8u66.