当然，以上函数只允许顺序读取文件。
Of course, the above functions only allow you to read a file in order.
对于没有天然顺序的元素，可以为构造函数提供一个Comparator。
For elements without a natural order, you can provide a Comparator to the constructor.
这些函数将会按照我们注册函数的顺序来执行。
The functions will run in the order in which they were registered.
使用该函数编写一个程序，每次颠倒一个输入行中的字符顺序。
Use it to write a program that reverses its input a line at a time.
为什么初始值设定项按与构造函数相反的顺序运行？
Why Do Initializers Run In The Opposite Order As Constructors?
为什么初始值设定项按与构造函数相反的顺序运行？
Why Do Initializers Run In The Opposite Order As Constructors?
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