https://docs.oracle.com/javase/8/docs/
https://www.java.com/zh_CN/download/release_notice.jsp
每天用C++干大活,用Perl干小活;编程从Shell脚本入门,然后Perl用了五六年,然后从perl guts的文档领悟了C的裸奔特性。18:54 2019/4/2