Java相关官方链接

1.垃圾回收

https://blogs.oracle.com/poonam/entry/understanding_cms_gc_logs

http://www.oracle.com/technetwork/java/javase/gc-tuning-6-140523.html

2.虚拟机

http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html

http://docs.oracle.com/javase/8/docs/technotes/tools/unix/java.html

3.api

https://docs.oracle.com/javase/8/docs/api/index.html

https://docs.oracle.com/javase/8/javase-books.htm