Java Advanced Imaging (JAI)...ever again??

Hello Raj,

According to this:

http://developer.apple.com/java/faq/apis.html

J3D and JAI are supposed to be included in Tiger's Java.

I don't think I worked with JAI yet but J3D seems to be there - at least it works for me 😉

There was a separate installer for Panther, I remember having to add it to make J3D work.

There are Java topics here, perhaps not too many... Just post your questions and someone will respond!

You're right, Raj, that page had me confused too, for a while...

I actually tried to run my J3D project after upgrading to Tiger and to my surprise it worked! Only later I found the explanation why it should.

There are many Java/Mac topics that should be better explained/demystified, best by Apple I guess. Numerous questions I saw in several forums show a lot confusion - Java 5, Java on Intel, WebStart, JAVA_HOME...

Especially differences from Sun's "reference" implementations confuse people coming from other platforms expecting a familiar environment.

I've been trying to get a web application (RSNA MIRC for radiology teaching files) to work that utilizes Java 5 and JAI on 10.4. I can verify that I'm using Java 1.5, but I get an error that looks like the JAI is either not present or not functional:

Any ideas? Does the JAI have to be manually activated (if it's included in OS 10.4)? Here's a thread on the problems others have been having...

http://forums.rsna.org/showthread.php?s=&threadid=699

-FJW

====================

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Servlet execution threw an exception


root cause

java.lang.NoClassDefFoundError: com/sun/media/imageio/stream/StreamSegmentMapper
org.dcm4cheri.imageio.plugins.DcmImageReaderSpi.canDecodeInput(DcmImageReaderSpi .java:111)
javax.imageio.ImageIO$CanDecodeInputFilter.filter(ImageIO.java:526)
javax.imageio.spi.FilterIterator.advance(ServiceRegistry.java:793)
javax.imageio.spi.FilterIterator.(ServiceRegistry.java:787)
javax.imageio.spi.ServiceRegistry.getServiceProviders(ServiceRegistry.java:491)
javax.imageio.ImageIO.getImageReaders(ImageIO.java:605)
org.rsna.mircsite.util.MircImage.getImageReader(MircImage.java:111)
org.rsna.mircsite.util.MircImage.(MircImage.java:91)
org.rsna.mircsite.fileservice.FileService.getIcon(FileService.java:649)
org.rsna.mircsite.fileservice.FileService.saveFile(FileService.java:561)
org.rsna.mircsite.fileservice.FileService.saveFile(FileService.java:524)
org.rsna.mircsite.fileservice.FileService.add(FileService.java:448)
org.rsna.mircsite.fileservice.FileService.doPost(FileService.java:252)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


note The full stack trace of the root cause is available in the Apache Tomcat/5.5.15 logs.

I just tested a simple JAI applet from here:

http://access1.sun.com/techarticles/ImagingApps/JImage.html

and it worked fine on Intel Tiger. I can see in my Eclipse class browser that jai_core.jar and jai.codec.jar are included in Mac OS Java 5 System Library.

However, package com.sun.media.imageio.* that causes your trouble is indeed not present.

I'm not a JAI expert but a glimpse at this:

http://java.sun.com/products/java-media/jai/

http://java.sun.com/products/java-media/jai/forDevelopers/jai-imageio-1_1-alpha- docs/index.html

indicates that it belongs to Image I/O "product" which is not a part of JAI. Apparently there are binary components included but (at least) some of the plug-ins could work as pure Java.

Perhaps you can try to download this from Sun and and plug those jars into your classpath?

iMac Core Duo 1.83 GHz Mac OS X (10.4.5) 1GB RAM