imagej / imagej/imagej2

imagej2/fiji Could not initialize class javax.imageio.ImageIO

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Description

I encountered some problems when developing imagej plugin.
Here is my code:

`ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(imageData);`
`BufferedImage bufferedImage = ImageIO.read(byteArrayInputStream);`
`ImageProcessor imageProcessor = new ij.process.ByteProcessor(bufferedImage);`
`ImagePlus img = new ImagePlus("Loaded Image", imageProcessor);`

When I call it in IDEA, there is no problem. javax.imageio.ImageIO should be part of the java basic library.
But when I package it into a jar package and call it in plugins, an error occurs:

`java.lang.NoClassDefFoundError: Could not initialize class javax.imageio.ImageIO`

This problem has troubled me for a long time. I have tried many methods but couldn't avoid it. Even putting a basic Java package rt.jar in various locations didn't work.
My purpose is just to build ImagePlus through ByteArrayInputStream. My requirement is to build an image from data transmitted through a network stream, while most tutorials are about reading local files.
My environment is as follows:
java.version: 1.8.0_322
IJ.getVersion: 2.16.0/1.54g
IJ.javaVersion: 8

I hope someone can help me solve this problem.

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Research direction

Start with the shown ByteArrayInputStream, ImageIO.read, ByteProcessor, and ImagePlus sequence, then reproduce it in the packaged ImageJ plugin environment using the reported Java 8 and ImageJ versions. Investigate the NoClassDefFoundError and compare it with the working IDEA setup; done means constructing an ImagePlus from network-provided image data without the initialization failure.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
computer-vision
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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