Zain Zain is a Java developer. His is a knowledge seeker who likes to try out and explore new things.

How to read BMP images in Java

1 min read

In this article I will show you how to read BMP images in Java.

BMP files are supported by both ImageIO and Apache Commons Imaging. We felt there was room for better support on the Java platform (especially in performance and support for the format. So we added BMP support to JDeli.

What is BMP?

A BMP is a bitmap image file format to store monochrome and colour images.

It was primarily designed for Window platforms although it also works on other platforms. It is not supported in Web browsers.

The file name extension for BMP files is: .bmp

How to read a BMP image in Java with ImageIO

Step 1 Create a File handle, InputStream or URL pointing to the raw BMP image.
Step 2 ImageIO will now be able to read a BMP file into a BufferedImage. This syntax is like so:

BufferedImage image = ImageIO.read(bmpFileOrInputStreamOrURL)

How to read a BMP image in Java with JDeli

Step 1 Add JDeli to your class or module path. (download the trial jar).
Step 2 Create a File, InputStream pointing to the raw BMP image. You can also use a byte[] containing the image data.
Step 3 Read the BMP image into a BufferedImage

BufferedImage image = JDeli.read(bmpFile);

Why use JDeli to read BMP?

JDeli offers a range of advantages over ImageIO and alternatives, including:

  • prevents heap related JVM crashes
  • reduce output file size
  • improved read performance
  • Faster write performance back to BMP
  • supports threading

Learn more about JDeli, or download to try it yourself.

Did you know...

IDRsolutions offers a whole range of online file converters to convert PDF and Microsoft Excel, Word and Office Documents to HTML5, SVG or image formats?

It is free to use for single file conversions and also includes Developer links if you want to use our commercial software for bulk conversions. Find out more on this page

Zain Zain is a Java developer. His is a knowledge seeker who likes to try out and explore new things.

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