当 ImageIcon(String) 的路径无效 (Java) 时会发生什么？

Question

You can create a new ImageIcon with ImageIcon icon = new ImageIcon("an image.png") , but what happens if "an image.png" doesn't exist, or some other error occurs? I'm writing a program that loads images like this, and I want to check if there was a problem loading an image, but since no Exception is thrown, how would you check that? Would if (icon == new ImageIcon()) be the correct statement?

EDIT: I was using ImageIO.read which does throw an exception and makes checking easy but some of the images I need to load are animated gifs which don't animate if you load them with ImageIO.read

Answer 1

What happens when a path for ImageIcon (String) is not valid is that the image will not be displayed and no errors will be appears.

You can check if the image file exists by doing this:

Path path = Paths.get("image.png");
if (Files.exists(path))
    //the image exists
else
    //the image does not exists