The Void class is an uninstantiable placeholder class to hold a reference to the Class object representing the primitive Java type void.
Void类是一个不可实例化的占位类, 只是用来持有java原始类型void的类对象的引用。

The Void class is an uninstantiable placeholder class to hold a reference to the Class object representing the primitive Java type void.
Void类是一个不可实例化的占位类, 只是用来持有java原始类型void的类对象的引用。