如何将缓冲图像转换为图像，反之亦然？ [英] How to convert buffered image to image and vice-versa?

问题描述

其实我正在处理一个图像编辑软件，现在我想转换缓冲图像，即：

Actually i am working on a image editing software and now i want to convert the buffered-image i.e :

  BufferedImage buffer = ImageIO.read(new File(file));

到图像，即格式如下：

  Image image  = ImageIO.read(new File(file));

有可能吗？如果是，那么如何？

Is it possible to so?? If yes, then how??

推荐答案

BufferedImage 是一个（n）图像，所以隐含您在第二行中执行的转换可以直接编译。如果你知道一个Image真的是一个BufferedImage，你必须像这样明确地转换它：

BufferedImage is a(n) Image, so the implicit cast that you're doing in the second line is able to be compiled directly. If you knew an Image was really a BufferedImage, you would have to cast it explicitly like so:

Image image = ImageIO.read(new File(file));
BufferedImage buffered = (BufferedImage) image;

因为BufferedImage扩展了Image，所以它可以放在Image容器中。但是，任何Image都可以适合那里，包括那些不是BufferedImage的Image，因此如果类型不匹配，你可能会在运行时获得ClassCastException，因为BufferedImage除非扩展BufferedImage，否则不能保存任何其他类型。

Because BufferedImage extends Image, it can fit in an Image container. However, any Image can fit there, including ones that are not a BufferedImage, and as such you may get a ClassCastException at runtime if the type does not match, because a BufferedImage cannot hold any other type unless it extends BufferedImage.

这篇关于如何将缓冲图像转换为图像，反之亦然？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！