blocks|key|1166813|text|类BufferedImage不实现Cloneable接口。因此，clone方法不会被重写。下面是一种深度复制技术的替代方案：Java+Tip+76:+An+alternative+to+the+deep+copy+technique|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1166814|entityMap|0|LINK|mutability|MUTABLE|url|http://www.javaworld.com/javaworld/javatips/jw-javatip76.html^0|1Q|1I|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Class BufferedImage does not implement the Cloneable interface. Thus the clone method is not overriden. Here's an alternative for a deep copy technique:
<a href="http://www.javaworld.com/javaworld/javatips/jw-javatip76.html" rel="nofollow noreferrer">Java Tip 76: An alternative to the deep copy technique</a>

blocks|key|952683|text|像这样的东西？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|952684|static+BufferedImage+deepCopy(BufferedImage+bi)+{
+ColorModel+cm+=+bi.getColorModel();
+boolean+isAlphaPremultiplied+=+cm.isAlphaPremultiplied();
+WritableRaster+raster+=+bi.copyData(null);
+return+new+BufferedImage(cm,+raster,+isAlphaPremultiplied,+null);
}|code-block|syntax|javascript|952685|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Something like this?

<pre><code>static BufferedImage deepCopy(BufferedImage bi) {
 ColorModel cm = bi.getColorModel();
 boolean isAlphaPremultiplied = cm.isAlphaPremultiplied();
 WritableRaster raster = bi.copyData(null);
 return new BufferedImage(cm, raster, isAlphaPremultiplied, null);
}
</code></pre>

blocks|key|952730|text|我这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|952731|public+static+BufferedImage+copyImage(BufferedImage+source){
++++BufferedImage+b+=+new+BufferedImage(source.getWidth(),+source.getHeight(),+source.getType());
++++Graphics+g+=+b.getGraphics();
++++g.drawImage(source,+0,+0,+null);
++++g.dispose();
++++return+b;
}|code-block|syntax|javascript|952732|它工作得相当好，而且使用起来也很简单。|952733|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I do this:

<pre><code>public static BufferedImage copyImage(BufferedImage source){
 BufferedImage b = new BufferedImage(source.getWidth(), source.getHeight(), source.getType());
 Graphics g = b.getGraphics();
 g.drawImage(source, 0, 0, null);
 g.dispose();
 return b;
}
</code></pre>

It works fairly well and it is simple to use.

blocks|key|952791|text|前面提到的过程在应用于子图像时失败。下面是一个更完整的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|952792|public+static+BufferedImage+deepCopy(BufferedImage+bi)+{
++++ColorModel+cm+=+bi.getColorModel();
++++boolean+isAlphaPremultiplied+=+cm.isAlphaPremultiplied();
++++WritableRaster+raster+=+bi.copyData(bi.getRaster().createCompatibleWritableRaster());
++++return+new+BufferedImage(cm,+raster,+isAlphaPremultiplied,+null);
}|code-block|syntax|javascript|952793|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The previously mentioned procedure fails when applied to sub images. Here is a more complete solution:

<pre><code>public static BufferedImage deepCopy(BufferedImage bi) {
 ColorModel cm = bi.getColorModel();
 boolean isAlphaPremultiplied = cm.isAlphaPremultiplied();
 WritableRaster raster = bi.copyData(bi.getRaster().createCompatibleWritableRaster());
 return new BufferedImage(cm, raster, isAlphaPremultiplied, null);
}
</code></pre>

blocks|key|1167075|text|另一种方法是使用Graphics2D类将图像绘制到新的空白图像上。这并不是真的克隆图像，但它会产生图像的副本。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1167076|public+static+final+BufferedImage+clone(BufferedImage+image)+{
++++BufferedImage+clone+=+new+BufferedImage(image.getWidth(),
++++++++++++image.getHeight(),+image.getType());
++++Graphics2D+g2d+=+clone.createGraphics();
++++g2d.drawImage(image,+0,+0,+null);
++++g2d.dispose();
++++return+clone;
}|code-block|syntax|javascript|1167077|entityMap^0|8|A|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Another way is to use the <code>Graphics2D</code> class to draw the image onto a new blank image. This doesn't really clone the image, but it results in a copy of the image being produced.

<pre><code>public static final BufferedImage clone(BufferedImage image) {
 BufferedImage clone = new BufferedImage(image.getWidth(),
 image.getHeight(), image.getType());
 Graphics2D g2d = clone.createGraphics();
 g2d.drawImage(image, 0, 0, null);
 g2d.dispose();
 return clone;
}
</code></pre>

blocks|key|1167136|text|我知道这个问题很老了，但对于未来的访问者，我将使用以下解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1167137|Image+oldImage+=+getImage();
Image+newImage+=+oldImage.getScaledInstance(oldImage.getWidth(null),+oldImage.getHeight(null),+Image.SCALE_DEFAULT);|code-block|syntax|javascript|1167138|如果更改刚刚获得的newImage也会影响到原始图像，请纠正我。|offset|length|style|CODE|1167139|-->+Javadoc+for+getScaledInstance|1167140|-->+Javadoc+for+SCALE_DEFAULT+(其他常量列在该常量的正下方)|1167141|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.oracle.com/javase/7/docs/api/java/awt/Image.html#getScaledInstance%2528int,%2520int,%2520int%2529|1|https://docs.oracle.com/javase/7/docs/api/java/awt/Image.html#SCALE_DEFAULT^0|0|0|9|8|0|4|T|0|0|4|P|1|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|12|8|@$I|13|J|14|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|15|8|@]|9|@$I|16|J|17|1|18]]|A|$]]|$1|O|3|P|5|6|7|19|8|@]|9|@$I|1A|J|1B|1|1C]]|A|$]]|$1|Q|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]|Y|$5|T|U|V|A|$W|Z]]]]

I know that this question is pretty old, but for future visitors, here's the solution I'd use:

<pre><code>Image oldImage = getImage();
Image newImage = oldImage.getScaledInstance(oldImage.getWidth(null), oldImage.getHeight(null), Image.SCALE_DEFAULT);
</code></pre>

Please correct me if changing the just obtained <code>newImage</code> also affects the original image in any way. 
--> <a href="https://docs.oracle.com/javase/7/docs/api/java/awt/Image.html#getScaledInstance%28int,%20int,%20int%29" rel="nofollow noreferrer">Javadoc for getScaledInstance</a> 
--> <a href="https://docs.oracle.com/javase/7/docs/api/java/awt/Image.html#SCALE_DEFAULT" rel="nofollow noreferrer">Javadoc for SCALE_DEFAULT</a> (the other constants are listed just below that one)

I have an object which has many bufferedimages in it, I want to create a new object copying all the bufferedimages into the new object, but these new images may be altered and i don't want the original object images to be altered by altering the new objects images.

is that clear?

Is this possible to do and can anyone suggest a good way to do it please?
I have thought of getSubImage but read somewhere that any changes to the subimage are relected back to the parent image.

I just want to be able to get a fresh entirely separate copy or clone of a BufferedImage

How do you clone a BufferedImage

我有一个对象，其中有许多缓冲区图像，我想创建一个新对象，将所有缓冲区图像复制到新对象中，但这些新图像可能会被更改，我不希望通过更改新对象图像来更改原始对象图像。清楚了吗？这有可能做到吗?有没有人能建议一个好的方法呢？我曾考虑过getSubImage，但在某处读到对子映像的任何更改都会反射回父映像。我只希望能够获得一个全...

问如何克隆BufferedImage
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