java - 这两种图片加载代码有什么区别？

Question

下面这两种代码用于加载图像文件:

A)

File sourceimage = new File("filename");
Image image = ImageIO.read(sourceimage);

B)

Toolkit tk = Toolkit.getDeafaultToolkit();
img=tk.getImage("filename");

这两个代码之间的真正区别是什么？

Answer 1

ImageIO.read(File)接受一个 File 并且比 Toolkit.getImage(String) 更新它需要一个文件名(并且已经成为该语言的一部分)。此外，第一个提供了附加功能(即 ImageIO.read(File) javadoc 的部分内容)

The current cache settings from getUseCache and getCacheDirectory will be used to control caching in the ImageInputStream that is created.

Note that there is no read method that takes a filename as a String; use this method instead after creating a File from the filename.