Decoding image to Java 2D

Does anyone know if an image, say a jpeg, can be decoded into Java 2D objects?

If you're using 1.4, the easiest way is with the read methods of javax.imageio.ImageIO

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How to download an image from java server

Hi,
I have created a program which allows me to upload images to Java Server thru Multipart.
How can i receive an image from server and download it to iPhone app.Is there any way apart from NSURL i can download the image.
Base64 Encoding & Decoding seems to be not working.
Thanks in advance,
Haritha

Hi,
I have created a program which allows me to upload images to Java Server thru Multipart.
How can i receive an image from server and download it to iPhone app.Is there any way apart from NSURL i can download the image.
Base64 Encoding & Decoding seems to be not working.
Thanks in advance,
Haritha

Useless code in java.awt.image.SampleModel.java?

Hey there,
i just looked up the sourcecode of java.awt.image.SampleModel.java in JDK 6
I discovered two issues i'd like to discuss.
1) on lines 736 to 739 this code is stated:
if (iArray != null)
pixels = iArray;
else
pixels = new int[numBands * w * h];
I asked myself, why does this code exist? while the getPixels() method is overwritten twice by double[] getPixels() and float[] getPixels, it is impossible to reach the part of the java code that initializes the pixels-array. One could only step into that line if "null" is given for the i/d/fArray-parameter. but if one would do so, the Java parser couldn't determine, which method is to use. so this part of code is just useless IMHO.
the java developers could get a little more performance out of this method if the if statement would be cut out - especially when reading a lot of very small rasters
or, on the other hand, they could replace this piece of code by an explicit bounds check.
When somebody touches this code, i would appreciate it if the errormessage "index out of bounds!" could be rewritten to be a little more verbose, like: Index out of bounds(x=123; y=456, maxX=100, maxY=400)!(numbers are just examples)
I hope i didn't miss something very basic and could help improving this class a little bit.
2) the local variable Offset(line 734) is coded against code conventions which say, variables shall start with a lowercase letter. Offset obviously doesn't fit that convention.
best regards
kdot

One could only step into that line if "null" is given for the i/d/fArray-parameter. but if one would do so, the Java parser couldn't determine, which method is to use. so this part of code is just useless IMHO. You can have
sampleModel.getPixels(x,y,w,h,(int[]) null, dataBuffer);No ambiguity on which method to use.
the local variable Offset(line 734) is coded against code conventions which say, variables shall start with a lowercase letter. Offset obviously doesn't fit that convention. You're correct, offset is against coding conventions. So are many other examples scattered throughout the jdk source code. For example, Hashtable should be called HashTable. In some cases the coding conventions might not have been established when the original code was written. In other cases it might have been human error. In yet other cases the conventions were probably ignored. The person who wrote the SampleModel class did so some 10+ years ago (Java 1.2). Who knows what he/she was thinking at the time, and in all honesty - does it really matter in this case?
Did you know there are some classes that declare unused local variables (ahem ColorConvertOp)? Some also have unused imports ( *** cough *** BufferedImage *** cough *** ). In essence, the jdk source code is not the epidemy of code correctness. But it's still pretty good.

Display image in java.awt.List

hello guys,
How i can display image in java.awt.List means listbox. give me sample code. if you have
Waiting for your favorable reply.
Regards,
Bhavesh Kharwa

java.awt.List you can not.
javax.swing.JLast you can.

How to open and validate the tif images via java?

Is it possible to open and validating the photoshop images via java. Kindly advise me.
Thanks for looking into this.
Maria Prabudass

I have recently looked at athe code for Image Processor.
To avoid bailing on errors it uses two techniques.
1) It turns off all PS error reporting in addition to just turning off dialogs with: app.displayDialogs = DialogModes.NO; (it restores the original settings when exiting)
2) It uses the Javascript construct Try.....Catch around the basic body of the code so "any" error will not abort the script but just jump to the "Catch" code.
Hope that is useful

How to scale up and scale down a image in java

i have a problem i want to scale the any image in java
i mean that what i have to do actually when i scale up the image and scale down the image
plz reply as soon as possible
mail me at following address
[email protected]
[email protected]
[email protected]

Look at Image.getScaledImage(...)

Using mysql decode function in Java

Hi everybody,
mysql documentation says:
DECODE(crypt_str,pass_str) -->
Decrypts the encrypted string crypt_str using pass_str as the password. crypt_str should be a string returned from ENCODE().
I used the above function in a Python script and had no problem, but have difficulty using the same thing in my Java code.
I receive runtime error when tried decode() in my Java code in executeQuery("s");. As far as I know the decode() function should be compiled, I can't run the decode() in the mysql command tool and receive a response (as I compiled and ran it in my Python script).
Has anybody ever used this function in the Java code? How? What format did you use? What I should use instead of "s" in this code?
conn is a database connection:
stmt = conn.createStatement();
rs = stmt.executeQuery("s");
I even tried PreparedStatement, but no luck.
Any help is greatly appreciated.

stmt.executeQuery("select blahblahblah, DECODE(fieldName, password), blahblahblah FROM blahblah...")

How can I set the size of an image in java?

How can I set the size of an image in java? I have to choose the width and height of image...thanks to everybody...sorry for my english :-)

Hi 43477
Can you provide more details, do you want to setsize to display an image on a screen of when saving image etc?
PS.
There is a good invention called googlegoogle is good, but sometimes it's better to use more specific search, there is a search field avove on this page :)

Images in Java

How can I use images in java

javapro9999 wrote:
I thought this place was for "New to JAVA".It is. It is not "New to having a brain and being capable of asking meaningful questions that can be answered without having to be nudged until you do".
I participate in other forums like asp.net but they don't reply that way.Instead they put a straightforward answer .Was it that difficult?With a vague idiotic question like: "How can I use images in java" - yes, it would have been difficult. Like what, someone is supposed to read your mind to determine what you don't understand, or just repeat what is already in tutorials here? The appropriate response given that stupid question was to just point you to the tutorials.

How to resize image using java imageio

Hello ,
I want to know how to resize image using java imageio.
I dont want to use java awt because i am writing a web application.
help is very much needed
thank you.

Just use an AffineTransform !
Its much easier

How to create dynamic images in java servlets?

I want to create dynamic images in java servlet. Can servlet create dynamic images that based on the input data files? The results can be displayed in GIF, JPG..format? how can this be done? any example in internet?
What OS do I need to install and what other requirements needed if i want to build up a servlet server?
Thanks a lot!

Also worth having a look at SVG http://www.w3.org/TR/2001/REC-SVG-20010904/, you can get a viewer at http://www.adobe.com/svg/ or you can use Batik http://xml.apache.org/batik/index.html to convert SVG to other formats such as JPEG.
HH

Transforms image between Java 2 and Visual J++6.0.

Hello experts,
Where describe that transforms image in Java 2
to image in microsoft Visual J++6.0.
Please help me ,thank you.
BCH Oct 14,2004

Eh, what?
/Kaj

Opening Images With Java

How do you open images with Java? It is a JPEG, and as most will figure out from this post, I'm new to this. :P thanks in advance for any effort...

Well... Can you possibly tell me what to put in (eg Source Packages) so yea... I'll look into the tutorial, but I also have another question. Would this work?
Image img = Toolkit.getDefaultToolkit().getImage(C://desktop/[gamefolder]/[hiddenimages]/[image]);
When [gamefolder] is the name of the folder, [hiddenimages] is the sub-folder with the images in it, and [image] is the image...

Print image using java

Dear All,
Can any one help me, how to print the image in java.
Thanks in Advance.

[http://java.sun.com/products/java-media/2D/index.jsp|http://java.sun.com/products/java-media/2D/index.jsp] will help you . Java 2d also have print api.
you look at this
[http://java.sun.com/javase/technologies/desktop/printing/|http://java.sun.com/javase/technologies/desktop/printing/]

No memory to decode image

In my app on motorazr(BREW) I am trying to load the frame having some images when it says -"Information -No memory to decode image". But the app works fine on the emulator. I have two frmaes in the app.The image on the first frame is displayed but when i go to second frame having 9 images( all .bmp) it gives problem and does not show images but shows other things on that frame. Also when I go back to the first frame, it gives the same trouble for that single image on frame 1 but load rest all the things.
How can i handle the situation?

You either have a problem with the size of the image, and need to compress them to JPG format. Or your code is leaking memory, in which case I suggest looking at the Mobile and Devices Cookbook.
regards,
Mark
www.flashmobileblog.com

Decoding image to Java 2D

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