This feature can, again, significantly reduce the length of your class definitions and make your application code simpler to maintain and easier to read.
同样,这个特性可以显著减少类定义的长度,并使您的应用程序代码更容易维护和读取。
3
The methods in this class let you create new arrays, get the length of an array object, and read and write indexed values of an array object.