May 2024
Intermediate to advanced
347 pages
5h 38m
Chinese
Content preview from Java数据分析指南Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
附录 Java工具
本书用到过多种软件工具，附录都会给出简要的描述和安装说明。这些工具都是免费的，而且很容易安装在你的计算机上，无论你运行的是macOS X、Microsoft Windows，还是UNIX的某个变种。因为本书的所有内容都是在Mac上编写的，我们的重点就放在这个平台。其他平台的安装和维护是类似的。
这里的信息截止到2017年8月。在线链接可能会定期更新，但是安装和使用的基本步骤预计不会有重大的改变。
命令行
在Mac上，命令行通过终端应用程序访问（在Windows上，它叫作命令提示符）。你会在Applications/Utilities/文件夹中找到终端应用程序。启动时将出现终端窗口，如图A-1所示。
图A-1 终端窗口
提示符展示了计算机的名称、一个冒号（：）、当前目录（文件夹）、一个空格、当前用户、一个美元符号（$）、一个空格然后是提示符号（□）。
终端窗口可以运行几百个命令。要看到所有命令的列表，按住Esc键一秒，然后按Y键，对问题回答“yes”。每次列表停顿时，按下空格键来看命令的下一屏。按下Q键终止列表。
按下Ctrl+C组合键来终止任何终端命令的执行。使用上下箭头键来对已保存的之前执行的命令进行滚动（以避免重复键入它们）。
尝试cal命令（图A-2）。
图A-2 calendar命令
它只展示当前月份的日历。
大多数终端窗口命令是UNIX命令。要查看命令的UNIX手册描述（man page），在该命令之后键入man。例如，要看calendar命令的联机资料，输入 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.