File I/O Stream Vs (ImageIO.read OR ImageIO.write) method

Question

What is the difference and advantages between writing or reading a image from file I/O Stream Vs ImageIO.read OR write function??

Is there certain operation in which we cannot write an image using ImageIO method??

Answer 1

You're comparing apples and oranges. A FileInputStream gives you bytes, not an image. ImageIO.read() gives you an image.