此书是作为javascr ipt初学者乃至精通学者的具有较强实用性的帮助工具，希望可以给您带来意想不到的收获，谢谢支持！-This book is for beginners as well as proficient in javascr ipt scholars with strong practical tools to help, hoping to bring you unexpected gains, thanks to support!

java.nio包的学习总结，看看确实有收获-The study concluded java.nio package to see if indeed there are gains