Today is a bad day, ha ha ha ha, hard to describe, I learn the road really tragic.
Before this would not be a problem, when the future study do not directly use the results to build someone else's, or will a lot of things.
For example, today's tomcat is to ftp download something might as well find their own information, this may slow down a bit, but a lot less chance of error, it focuses on basic knowledge and basic understanding.
Or the record about how wrong it ranked today.
First, I use the 1.8 jdk and tomcat7, then you can not compile
So it is necessary jdk 1.8 and tomcat8. On it.