java - IO流：怎么正确理解FileInputStream类 和 FileInputStream类的对象

Question

Answer 1

I think the File class is a bucket, and the file object is the red bucket.
The FileInputStream class is a pipe for a bucket, and the fileInputStream object is a pipe with a radius of 10cm.
As for which bucket the pipe fills with water, we don’t know, and we don’t need to know.