Read and Write JPEG 2000 Files in Java with JDeli
JDeli Image Library adds JPEG 2000 support to Java, allowing you to read, write, and convert JPEG 2000 files without native dependencies. Java’s built-in ImageIO has no JPEG 2000 support, meaning any Java application that needs to handle JPEG 2000 files must rely on a third-party library. JDeli implements JPEG 2000 support entirely in pure Java, with lossless and lossy output, JP2 or JPX output formats, no native binaries, no platform-specific setup, and no risk of JVM crashes from native code.
Frequently Asked Questions
Does Java support JPEG 2000 natively?
No. Java’s built-in ImageIO cannot read or write JPEG 2000 files. JDeli adds full JPEG 2000 read and write support in pure Java.
Can JDeli read JPEG 2000 files in Java?
Yes. JDeli can read JPEG 2000 files and return a BufferedImage, which can then be processed or converted to any other supported format.
Can JDeli write JPEG 2000 files in Java?
Yes. JDeli can write BufferedImage objects to JPEG 2000 format, as either JP2 or JPX output. Both lossless and lossy compression are supported, and the Jpeg2000EncoderOptions class lets you set the output quality. See the Java JPEG 2000 writer guide for a code example.
Which JPEG 2000 image types can JDeli read?
JDeli reads black-and-white, grayscale, RGB, CMYK, and YCCK JPEG 2000 images, including images with alpha transparency.
How do I convert JPEG 2000 to JPEG in Java?
JDeli’s convert method provides a single call to convert directly from JPEG 2000 to JPEG. JDeli handles the conversion entirely in Java with no native tools required.
How do I convert JPEG 2000 to PNG in Java?
JDeli’s convert method provides a single call to convert directly from JPEG 2000 to PNG. JDeli handles the conversion entirely in Java with no native tools required.
Does JDeli’s JPEG 2000 support require native libraries?
No. JDeli’s JPEG 2000 implementation is pure Java. It runs consistently across platforms without the JVM crash risk that comes from native-dependent alternatives.
Can JDeli be used with ImageIO for JPEG 2000 files?
Yes. JDeli is available as an ImageIO plugin. Once the JPEG 2000 reader and writer are registered through the plugin, existing code that calls ImageIO.read() and ImageIO.write() will use JDeli for JPEG 2000 files. See the ImageIO migration guide for details.