I need your help and opinion on JNI

I am assigned a task to build one Java API above one existing protocol stack written in legacy C++, which involves UDP and TCP communication.
The C++ code involves callback method.
My qustion is:
1. I only tried some simple examples on one way trasfering, for example, invoke c++ from Java (HelloWorld example), and either invoke Java from C++. Is it possible to do it all together? I mean invoke C++ from Java and invoke Java from C++ for the callback methods at the same time?
2. Is it possible to do this with JNI? I doubt because it involves callback method in C++ code, so in Java, a interface should be created with the callback method declared inside it.
I really need your help!

1. Yes it is possible to call out of java into C, and back into java from C. And the tool of choice is JNI.
2. You better buy a JNI book.
3. As you get into it, you will probably find that designing around threading issues become important. Scan this forum.

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I used Oracle Database 9i Release 2, and now I want to install Orale9iAS portal. I tried many times but I am not success. I read Orale9iAS Pible book, he said Oracle9iAS Portal just for Oracle8i, so is it right ?
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Thank you very much !
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Hi,
It's completly wrong portal only runs on 0racle 8i, you might have read a very old document, is runs on 9i and 10g too.
Installation is completed via OUI (Oracle Universal Installer), but you should carefully read installation manuals (found on oracle's website) before, there are lots of possibilities and things to know.
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Hi Patricia Zouein. Here is the only thing the apple has on this. Read this and see if it can apply to you, Sorry for your loss. http://support.apple.com/en-us/HT2526

Updating to WM 6 Pro but which one??? Need your help and advice

Good Day!
I just recently bought a Treo 750 here in Taiwan and I want to update my device from WMPro 5 to WMPro 6.. I saw 2 different updates both from palm support
This link i got from a chinese online palm community. This update is for the 2.23 version and labeled as generic English.
https://ws.palm.com/SupportDownload/app?service=external/Home&sp=20
This link i got from palm philippines and this update is for the 2.27 version labeled as generic English for APAC Region http://www.palm.com/ph/support/treo750/downloads/wm6update.html
Device String Download file Treo 750 Treo 750-1.16-RWE Download
Which file do I download?? I'm thinking of downloading the latter since it is a much higher version compared to the previous one.. Hope to hear from you guys soon thanks a lot!!!!
hyuuga_patik
Post relates to: Treo 750
Message Edited by hyuuga_patik on 10-18-2008 02:15 PM
This question was solved.
View Solution.

Hi HardBeatZ thanks for the reply.. my version is Treo750 - 1.16-RWE. So do I download the 2nd one the one from the palm philippines website? I am a bit confused by your suggestion...
here is the link http://forum.palmislife.com/thread-81973-1-1.html for the chinese forum where I got the first download link..you can maybe scroll down a little bit then you can see this part..
-- 2.23 --
Palm 750 / 零售 unlock / 官方下载
Treo 750-1.16-RWE
升級後版本 Treo 750-2.23-RWE
which is also matches the same string version from the palm philippines website and my current device.. Hope to hear from you soon thanks a lot and take care!
****the chinese word on the right side of unlock / is the link to the updater..
****from the palm phil website the link to the updater is Download next to this: Device String Download file Treo 750 Treo 750-1.16-RWE (see first post)
hyuuga_patik
Post relates to: Tungsten E2
Message Edited by hyuuga_patik on 10-19-2008 01:42 AM

I need your help with a decision to use iPhoto. I have been a PC user since the mid 1980's and more recently have used ACDSee to manage my photo images and Photoshop to edit them. I have used ProShow Gold to create slideshows. I am comfortable with my

I need your help with a decision to use iPhoto. I have been a PC user since the mid 1980’s and more recently have used ACDSee to manage my photo images and Photoshop to edit them. I have used ProShow Gold to create slideshows. I am comfortable with my own folder and file naming conventions. I currently have over 23,000 images of which around 60% are scans going back 75 years. Since I keep a copy of the originals, the storage requirements for over 46,000 images is huge. 180GB plus.
I now have a Macbook Pro and will add an iMac when the new models arrive. For my photos, I want to stay with Photoshop which also gives me the Bridge. The only obvious reason to use iPhoto is to take advantage of Faces and the link to iMovie to make slideshows. What am I missing and is using iPhoto worth the effort?
If I choose to use iPhoto, I am not certain whether I need to load the originals and the edited versions. I suspect that just the latter is sufficient. If I set PhotoShop as my external editor, I presume that iPhoto will keep track of all changes moving forward. However, over 23,000 images in iPhoto makes me twitchy and they are appear hidden within iPhoto. In the past, I have experienced syncing problems with, and database errors in, large databases. If I break up the images into a number of projects, I loose the value of Faces reaching back over time.
Some guidance and insight would be appreciated. I have a number of Faces questions which I will save for later.

Bridge and Photoshop is a common file-based management system. (Not sure why you'd have used ACDSEE as well as Bridge.) In any event, it's on the way out. You won't be using it in 5 years time.
Up to this the lack of processing power on your computer left no choice but to organise this way. But file based organisation is as sensible as organising a Shoe Warehouse based on the colour of the boxes. It's also ultimately data-destructive.
Modern systems are Database driven. Files are managed, Images imported, virtual versions, lossless processing and unlimited editing are the way forward.
For a Photographer Photoshop is overkill. It's an enormously powerful app, a staple of the Graphic Designers' trade. A Photographer uses maybe 15% to 20% of its capability.
Apps like iPhoto, Lightroom, Aperture are the way forward - for photographers. There's the 20% of Photoshop that shooters actually use, coupled with management and lossless processing. Pop over to the Aperture or Lightroom forums (on the Adobe site) and one comment shows up over and over again... "Since I started using Aperture/ Lightroom I hardly ever use Photoshop any more..." and if there is a job that these apps can do, then the (much) cheaper Elements will do it.
The change is not easy though, especially if you have a long-standing and well thought out filing system of your own. The first thing I would strongly advise is that you experiment before making any decisions. So I would create a Library, import 300 or 400 shots and play. You might as well do this in iPhoto to begin with - though if you’re a serious hobbyist or a Pro then you'll find yourself looking further afield pretty soon. iPhoto is good for the family snapper, taking shots at birthdays and sharing them with friends and family.
Next: If you're going to successfully use these apps you need to make a leap: Your files are not your Photos.
The illustration I use is as follows: In my iTunes Library I have a file called 'Let_it_Be_The_Beatles.mp3'. So what is that, exactly? It's not the song. The Beatles never wrote an mp3. They wrote a tune and lyrics. They recorded it and a copy of that recording is stored in the mp3 file. So the file is just a container for the recording. That container is designed in a specific way attuned to the characteristics and requirements of the data. Hence, mp3.
Similarly, that Jpeg is not your photo, it's a container designed to hold that kind of data. iPhoto is all about the data and not about the container. So, regardless of where you choose to store the file, iPhoto will manage the photo, edit the photo, add metadata to the Photo but never touch the file. If you choose to export - unless you specifically choose to export the original - iPhoto will export the Photo into a new container - a new file containing the photo.
When you process an image in iPhoto the file is never touched, instead your decisions are recorded in the database. When you view the image then the Master is presented with these decisions applied to it. That's why it's lossless. You can also have multiple versions and waste no disk space because they are all just listings in the database.
These apps replace the Finder (File Browser) for managing your Photos. They become the Go-To app for anything to do with your photos. They replace Bridge too as they become a front-end for Photoshop.
So, want to use a photo for something - Export it. Choose the format, size and quality you want and there it is. If you're emailing, uploading to websites then these apps have a "good enough for most things" version called the Preview - this will be missing some metadata.
So it's a big change from a file-based to Photo-based management, from editing files to processing Photos and it's worth thinking it through before you decide.

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Stop being impatient.
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