The control argument specifies a format control and the args argument represents any number of arguments.
control参数指定一个格式化控制台，args参数表示任意数量的参数。
After all the args prefixed with a "-" are processed, check if there are any remaining args.
处理完所有以“-”为前缀的参数后，应检查是否还有剩余的参数。
If the class has a no-args constructor, and you want to use that constructor and then immediately invoke a single instance method on it, there's a shortcut.
如果该类具有一个无参构造函数，您想使用这个构造函数，然后立即在其上调用一个实例方法，那么有一种捷径。
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