How to load .jpeg images dynamically

Hi all,
I am only perfect with basics of AS3 and flash. I need AS3
code or a basic example/tutorial for loading of .jpeg images into
flash from database.I had searched through google, but, any of the
example won't match.
Please, If anyone has their ideas, atleast send me the
algorithm for your idea, so that i can try by implementing the
idea.
I think, once again when I open this topic, i will be
getting my requirement.
Thanks a lot in advance. Reply me soon.. It is urgent..
Srihari.Ch

The loading is easy:
var l:Loader = new Loader();
l.load( new URLRequest( "
http://www.adobe.com/devnet/images/214x74/adc_lockup.jpg"
addChild( l )
But the database part, well... what kind of database did you
have in mind?
Store the images on disk and just have their path in the
database or have the images as blob in the database. Are you
looking for serverside script and SQL aswell? It's a question with
a lot of different answers...

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How to load jpeg images in database?

I have an employees panel and it has a box to show employee's picture. Normally I double click on the box and it takes me to the folder where I have stored all employees jpeg file. I click on the one I need and then insert, it shows up on the panel and also saving the data in a table called PS_EMPLOYEE_IMAGE table.
If I want to insert number of images at one time thru the back end like sqlplus is there a way to do it? This saves me lot of time instead of entering thru the panel. Can it be done? For example fot employee1 insert jpeg1, employee2 jpeg2 etc. DO I have to use any tool to convert these jpeg files into some other data and then insert it? Is there any pl/sql package to do it?. If some one can explain me with simple explanation I really appreciate as I am not an real oracle person. Googling for this issue says it can be done but it is not very clear in steps of doing it.

Thanks for your help. I did exactly like what you described (see below)
1) I created a image_file.txt file as shown below
EMPLID|EFFDT|EFF_STATUS|IMAGE_FILE
100000|08-FEB-2011|A|H:\SQL_Loader\George_Test.jpg
100001|08-FEB-2011|A|H:\SQL_Loader\Eftihia_Test.jpg
2) Then created EE_Image_Tbl.ctl file as shown below.
OPTIONS (DIRECT=TRUE, SKIP=1)
UNRECOVERABLE
LOAD DATA
APPEND
INTO TABLE PS_EMPLOYEE_IMAGE
FIELDS TERMINATED BY '|'
(EMPLID
,EFFDT
,EFF_STATUS
,IMAGE_FILE FILLER CHAR(80)
,EE_IMAGE LOBFILE(IMAGE_FILE) TERMINATED BY EOF)
3) then used the sql loader (load_ee_image.sql)
$ sqlldr DH5M/ep5evs1@KDH5MI01 control=h:\sql_loader\EE_Image_Tbl.ctl log=h:\sql_loader\load_ee_image.log data=h:\sql_loader\image_file.txt
SQL> --*
SQL> commit;
Commit complete.
SQL> --*
SQL> @h:\sql_loader\load_ee_image.sql;
SQL> $ sqlldr DH5M/ep5evs1@KDH5MI01 control=h:\sql_loader\EE_Image_Tbl.ctl log=h:\sql_loader\load_ee_image.log data=h:\sql_loader\image_file.txt
SQL> --*
SQL> --*
SQL> --*
SQL> commit;
Commit complete.
SQL> --rollback;
SQL> --*
SQL> spool off
L
Number to skip: 1
Errors allowed: 50
Continuation: none specified
Path used: Direct
Load is UNRECOVERABLE; invalidation redo is produced.
Table PS_EMPLOYEE_IMAGE, loaded from every logical record.
Insert option in effect for this table: APPEND
Column Name Position Len Term Encl Datatype
EMPLID FIRST * | CHARACTER
EFFDT NEXT * | CHARACTER
EFF_STATUS NEXT * | CHARACTER
IMAGE_FILE NEXT 80 | CHARACTER
(FILLER FIELD)
EE_IMAGE DERIVED * EOF CHARACTER
Dynamic LOBFILE. Filename in field IMAGE_FILE
SQL*Loader-418: Bad datafile datatype for column EE_IMAGE
This is becasue my image datatype can be declared as LONG RAW dara type thru my application.
When I created a table with image datatype as BLOB it worked.
But I want to insert into the existing table where image is declared as LONG RAW. How to insert jpeg into this field. Do I have to convert anything? Thx.
Edited by: user5846372 on Feb 8, 2011 1:18 PM
Edited by: user5846372 on Feb 8, 2011 2:16 PM

How to load mutiple image

I'm trying to create a photo manager but I can't find a way to load multiple images onto my frame. I have a thumbnail class that makes thumbnails for an image (which is a modified version of the class ImageHolder from FilthyRichClient)
public class Thumbnails {
     private List<BufferedImage> scaledImages = new ArrayList<BufferedImage>();
private static final int AVG_SIZE = 160;
* Given any image, this constructor creates and stores down-scaled
* versions of this image down to some MIN_SIZE
public Thumbnails(File imageFile) throws IOException{
          // TODO Auto-generated constructor stub
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int imageW = originalImage.getWidth();
int imageH = originalImage.getHeight();
boolean firstScale = true;
scaledImages.add(originalImage);
while (imageW >= AVG_SIZE && imageH >= AVG_SIZE) {
     if(firstScale && (imageW > 320 || imageH > 320)) {
          float factor = (float) imageW / imageH;
          if(factor > 0) {
          imageW = 320;
          imageH = (int) (factor * imageW);
          else {
               imageH = 320;
               imageW = (int) (factor * imageH);
     else {
          imageW >>= 1;
     imageH >>= 1;
BufferedImage scaledImage = new BufferedImage(imageW, imageH,
originalImage.getType());
Graphics2D g2d = scaledImage.createGraphics();
g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2d.drawImage(originalImage, 0, 0, imageW, imageH, null);
g2d.dispose();
scaledImages.add(scaledImage);
* This method returns an image with the specified width. It finds
* the pre-scaled size with the closest/larger width and scales
* down from it, to provide a fast and high-quality scaled version
* at the requested size.
BufferedImage getImage(int width) {
for (BufferedImage scaledImage : scaledImages) {
int scaledW = scaledImage.getWidth();
// This is the one to scale from if:
// - the requested size is larger than this size
// - the requested size is between this size and
// the next size down
// - this is the smallest (last) size
if (scaledW < width || ((scaledW >> 1) < width) ||
(scaledW >> 1) < (AVG_SIZE >> 1)) {
if (scaledW != width) {
// Create new version scaled to this width
// Set the width at this width, scale the
// height proportional to the image width
float scaleFactor = (float)width / scaledW;
int scaledH = (int)(scaledImage.getHeight() *
scaleFactor + .5f);
BufferedImage image = new BufferedImage(width,
scaledH, scaledImage.getType());
Graphics2D g2d = image.createGraphics();
g2d.setRenderingHint(
RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2d.drawImage(scaledImage, 0, 0,
width, scaledH, null);
g2d.dispose();
scaledImage = image;
return scaledImage;
// shouldn't get here
return null;
A loop will loop through a collection of files and pass them to the constructor of Thumbnails to create thumbnails and then set them as icon for JLabels that will be added to a JPanel, but it throws a java.lang.OutOfMemoryError at this line:
BufferedImage originalImage = ImageIO.read(imageFile);
even when there're only about 8 image files in the collection (total size 2,51MB).
I've seen other people's software that could load hundreds of photos in a matter of seconds! How do I suppose to do that? How to load mutiple images efficiently? Please help!! Thanks a lot!

another_beginner wrote:
Thanks everybody! I appreciate your help! I don't understand why but when I use a separate thread to do the job, that problem disappear. You were likely doing your image loading and thumnail creation on the Event Dispatching Thread. Among other things, this is the same thread that updates and paints your panels, frames, buttons, ect.. When a programer does something computationaly expensive on the event dispatching thread then the GUI becomes unresponsive until the computation is done.
Ideally what you want to do is load images and create thumnails on a seperate thread and update your GUI on the event dispatching thread. I supect that while you are finally doing the first item, you might now be violating the second item.
Whatever, the program seems to be pretty slow on start up 'cause it have to reload images everytime. I'm using Picasa and it can display those thumbnails almost instantly. I know that program is made by professionals. But I still want to know how.I took a look at this Picasa you mentioned. It's the photo manager from google right? You're right in that the thumnails display instantly when starting up. This is because Picasa is actually saving the thumnails, instead of creating them everytime the program starts up. It only creates the thumnails once (when you import a picture) and saves the thumnail data to " +*currentUser*+ /AppData/Local/Google/Picasa2/db3/" (at least on my computer --> Vista).
Also, if your looking for speed then for some inexplicable reason java.awt.Toolkit.getDefaultToolkit().createImage(...); is faster (sometimes much faster) than ImageIO.read(...). But there comes a price in dealing with Toolkit images. A toolkit image isn't ready for anything until it has been properly 'loaded' using one of several methods. Also, when you're done and ready for the image to be garbage collected then you need to call Image.flush() or you will eventually find yourself with an out of memory error (BufferedImages don't have this problem). Lastly, Toolkit.createImage(...) can only read image files that the older versions of java supported (jpg, png, gif, bmp) .
And, another question (or maybe I should post it in a different thread?), I can't display all thumbnails using a JPanel because it has a constant height unless I explicitly set it with setPreferredSize. Even when put in a JScrollPane, the height doesn't change so the scrollbar doesn't appear. Anyone know how to auto grow or shrink a JPanel vertically? Or I have to calculate the preferred height by myself?Are you drawing the thumnails directly on the JPanel? If so then you will indeed need to dynamically set the preferred size of the component.
If not, then presumebly your wrapping the thumnails in something like a JLabel or JButton and adding that to the panel. If so, what is the layout manager you're using for the panel?

How to load a image after getting it with a file chooser?

I'm still starting with JavaFX, and I simply would like to know how to load the image (e.g. png or jpg) that I selected using a FileChooser in the user interface. I can access the file normally within the code, but I'm still lost about how to load it appropriately. Every time I select a new image using the FileChooser, I should discard the previous one and consider the new one. My code is shown below:
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.shape.Rectangle;
import javafx.scene.paint.Color;
import javafx.scene.layout.HBox;
import javafx.scene.control.Button;
import javax.swing.JFileChooser;
import javafx.scene.image.ImageView;
import javafx.scene.image.Image;
var chooser: JFileChooser = new JFileChooser();
var image;
Stage {
    title: "Image"
    scene: Scene {
        width: 950
        height: 500
        content: [
            HBox {
                layoutX: 670
                layoutY: 18
                spacing: 10
                content: [
                    Button {
                        text: "Open"
                        action: function() {
                            if (JFileChooser.APPROVE_OPTION == chooser.showOpenDialog(null)) {
                                var imageFile = chooser.getSelectedFile();
                                println("{imageFile.getCanonicalFile()}");
                                image = Image{
                                    width: 640
                                    url:imageFile.getAbsolutePath()
            // Image area
            Rectangle {
                x: 10
                y: 10
                width: 640
                height: 480
                fill: Color.WHITE
            ImageView {
                x: 10
                y: 10
                image: bind image
}Thank you in advance for any suggestion to make it work. :)

As its name implies, the url param expect... an URL, not a file path!
So, use {color:#8000FF}url: imageFile.toURI().toURL(){color} instead.

How to change the images dynamically in a table.

Hai,
How to change the images dynamically in a table based on the condition in webdynpro abap.
Edited by: Ravi.Seela on Oct 13, 2011 2:17 PM

This has been much discussed earlier. Do search posts.
For your scenario i would do the following.
inside your node which is binded to the table, i create a new node image with cardinality 1 ..1 and a attribute called path of type string.
create a supply function for the node image .
Supply method now has a Element (Parent element ) and node.
Based on your record in element, set the right image source to path attribute and bind the node.
This will make sure that the framework calls the image supply function for every row in a table.

How to store jpeg images in SQL server using NI database Connectivity Toolset. Can anyone please help me in this regard.

Please tell how to store jpeg images in SQL Server using NI Database Connectivity Toolset.

http://www.w3schools.com/sql/sql_datatypes.asp
You setup a field as BLOB and store the binary of the picture there. Depending on the database it can be called differently as you can see in the link, in SQL server there's even a Image datatype.
/Y
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How to uploag jpeg image for smartforms

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Edited by: Matt on Nov 16, 2008 4:15 PM

Hi
Convert the jpeg into bmp or bitmap...as from se78 jpeg cannot be uploaded. To convert, all you have to do is open the jpeg picture using paint brush and then save it as bmp. When you click save as in paint brush, it will open a window..in that in "Files of Type" select bitmap image and upload it.
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Vishwa.

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is there some docs or how to, load am image into a database blob in a custom apps form.
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hi,
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allmthdlst.setListData(vecList);
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Also previously this code was working with java files in the directory in which this java file was present..How to make it work for java file in some other directory..pls help me in this regard...
Thanks in advance..

You sure didn't need to post this twice.
http://forum.java.sun.com/thread.jsp?thread=522234&forum=31&message=2498659
When you post code, please use [code] and [/code] tags as described in Formatting Help on the message entry page. It makes it much easier to read and prevents accidental markup from array indices like [i].
You resolve this problem by ensuring the class is in the classpath and you refer to it by its full name.
§

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Hi
I want to call a method from a class,which class is loaded dynamically.
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How to do this?
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Loading multiple images dynamically

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managed to load one, how to load several,
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function imageLoaded(e:Event):void {
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hi,
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Hi,
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How to load .jpeg images dynamically

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