toBook

观察者模式，实现数据更新的监听，当有一方面数据变化时，会通知到所有观察者。(The observer pattern, the monitoring of data updates, will notify all observers when there is one aspect of the change in the data.)

有关Java的程序，可以实现火车票预订,订票，退票(you can afford ticket in advance)

Java 加载网络图片的例子，也是比较简单的，但加入了线程池的东西，感兴趣可以看看(Java load the example of the network picture is relatively simple, but with the addition of the thread pool things interested can look at)

Java 实现的扫雷小程序，有可爱的图片贴图。(java mine sweeper)

日期时间计算,判断日期时间合法性,转成统一格式,回车代替TAB键,等公共函数()

说明：  xchart源代码，包含了大量的条形统计图 ，曲线 ，折线，弧形等众多画图源码(xchart source code Contains a large number of bar statistics curves, polygons arcs and many other drawing source code.)

编程之道 ebook for programming(ebook for programming)

java爬虫程序，运行时输入网址作为参数，然后可以爬下来一些网页内容。采用多线程结构，可以设置爬虫深度(It is a net-spider which can define the deepth of it and get the HTML and save as an static file at your disk.)

Multiline comments containing "/" should not be syntax errors.

说明：  对于刚刚步入 Linux 的菜鸟来说, 难免要有时利用一下 的资源,(For newcomers who have just entered Linux, it is unavoidable to make use of some resources at times.)