Java Io operations: differences between byte stream and byte stream

1. In fact, the byte stream itself does not use a buffer (memory) during operations, but directly operates on the file itself. The swap stream uses a buffer during operations and operates through the buffer zone.Composition. That is, the byte stream uses a buffer while the byte stream does not.
2. all files are stored in bytes on the hard disk or during transmission, including images, which are stored in bytes. The characters are only formed in the memory, therefore, byte streams are widely used during development.