图像与BufferedImage [英] Image vs. BufferedImage

问题描述

每当处理Java中的图像加载和渲染时，我以前总是使用 BufferedImage 来存储和操作内存中的图像。

Whenever dealing with the loading and rendering of images in Java, I have previously always used BufferedImages to store and manipulate the images in memory.

但是，我最近遇到了一个少数 不同 网站使用图像类而不是 BufferedImage 这让我想知道 - 有什么区别？

However, I have recently come across a few different sites that use the Image class instead of BufferedImage and this got me wondering - what are the differences?

我知道 BufferedImage 已经一个更大/优化的工具集，但不惜任何代价？如果是这样，这个成本什么时候变得明显？在哪种情况下你会在 BufferedImage 上使用 Image ，反之亦然？

I'm aware that a BufferedImage has a larger/optimised toolset, but does come at any cost? If so, when does this cost become noticeable? In which situations would you use an Image over a BufferedImage, or vice-versa?

推荐答案

BufferedImage扩展图像。 Image 只是一个基本的抽象类，你无法实例化它。在引擎盖下你肯定使用 BufferedImage 或其他实现。

BufferedImage extends Image. Image is just a base abstract class and you can't instantiate it. Under the hood you are using BufferedImage or another implementation for sure.

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