Byte Array to Image object

JavaArraysImageByte

Java Problem Overview

I am given a byte[] array in Java which contains the bytes for an image, and I need to output it into an image. How would I go about doing this?

Much thanks

Java Solutions

Solution 1 - Java

BufferedImage img = ImageIO.read(new ByteArrayInputStream(bytes));

Solution 2 - Java

If you know the type of image and only want to generate a file, there's no need to get a BufferedImage instance. Just write the bytes to a file with the correct extension.

try (OutputStream out = new BufferedOutputStream(new FileOutputStream(path))) {
    out.write(bytes);
}

Solution 3 - Java

From Database.
Blob blob = resultSet.getBlob("pictureBlob");				
byte [] data = blob.getBytes( 1, ( int ) blob.length() );
BufferedImage img = null;
try {
img = ImageIO.read(new ByteArrayInputStream(data));
} catch (IOException e) {
    e.printStackTrace();
}
drawPicture(img);  //  void drawPicture(Image img);

Solution 4 - Java

Since it sounds like you already know what format the byte[] array is in (e.g. RGB, ARGB, BGR etc.) you might be able to use BufferedImage.setRGB(...), or a combination of BufferedImage.getRaster() and WritableRaster.setPixels(...) or WritableRaster.setSamples(...). Unforunately both of these methods require you transform your byte[] into one of int[], float[] or double[] depending on the image format.

Solution 5 - Java

According to the Java docs, it looks like you need to use http://java.sun.com/j2se/1.3/docs/api/java/awt/image/MemoryImageSource.html">the MemoryImageSource Class to put your byte array into an object in memory, and then use Component.createImage(ImageProducer) next (passing in your MemoryImageSource, which implements ImageProducer).

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Content TypeOriginal AuthorOriginal Content on Stackoverflow
QuestionSeñor Reginold FrancisView Question on Stackoverflow
Solution 1 - JavaNick VeysView Answer on Stackoverflow
Solution 2 - JavaSam BarnumView Answer on Stackoverflow
Solution 3 - JavaUsmanView Answer on Stackoverflow
Solution 4 - JavaKevin LoneyView Answer on Stackoverflow
Solution 5 - JavaPlatinum AzureView Answer on Stackoverflow