Solved

Loading Images from a website taking forever.

Posted on 2004-09-06
12
147 Views
Last Modified: 2010-03-31
Hi there, I have a list of images I am loading from a website, these images are all around 5kb each.  When I perform a load, it seems like it takes seconds to load each image.  How can I load them properly so it will load faster?  This is basically what I am doing now.  I am populating a JList with icons and text.  The mFilename_ac variable looks like "http://www.website/picture/picture.gif".  So how can I ensure the picture loads, and that it loads fast?  I have put it in a thread, but it takes 60 seconds to load 100 images on a highspeed dsl?  Thanks experts.

            DefaultListModel dlm2 = new DefaultListModel();
            URL image = new URL(mEmoticonData_t[i].mFileName_ac.toString());
            ImageIcon myIcon_t = new ImageIcon(image);
            for (int i=0; i< numImages_i; i++)
            {
                    dlm2.addElement(new ListEntry(mEmoticonData_t[i].mCharacters_ac.toString(), myIcon_t));
            }
            emoticonList.setModel(dlm2);
0
Comment
Question by:kesea
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
  • 4
  • 2
  • +1
12 Comments
 
LVL 92

Expert Comment

by:objects
ID: 11993918
> it seems like it takes seconds to load each image.

>  I have put it in a thread, but it takes 60 seconds to load 100 images

The second statement seems to suggest its more like 0.5 sec per image.

Can't see anything in the code that would cause it to be unnecessarily slow.
0
 
LVL 92

Expert Comment

by:objects
ID: 11993927
If you don't use an ImageIcon and instead load your images directly (as Image's) then they will load asynchronously.
0
 

Author Comment

by:kesea
ID: 11996859
How do I load an image directly from a URL?  
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 35

Expert Comment

by:girionis
ID: 11996912
ImageIcon icon = ImageIcon(new URL("http://www.mysite.com/myimage.jpg"))
Image image = icon.getImage();
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 11999341
Make sure it *is* the download that's taking longer than you think it is, and not the rendering, before you try to take remedial action. For that, you'd be better leaving the code as it is (synchronous) first. You can then give objects' suggestion a try later, although it may not improve things and may even slow them down.
0
 

Author Comment

by:kesea
ID: 11999567
Can I load the images from my .jar file or will I have to get it digitally signed?
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 11999587
Yes - why do you think you'd need to sign it?
0
 
LVL 92

Accepted Solution

by:
objects earned 500 total points
ID: 12000963
> Can I load the images from my .jar file or will I have to get it digitally signed?

Absolutely, use getResource() to get a URL for the image.
No need to sign it.
0
 
LVL 92

Expert Comment

by:objects
ID: 12000974
URL image = getClass().getResource("/images/my.gif");
ImageIcon i = new ImageIcon(image);
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 12001249
kesea - can you explain why that particular 'answer' merited the entire question points?
0
 
LVL 92

Expert Comment

by:objects
ID: 12001282
> can you explain why that particular 'answer' merited the entire question points?

because it will greatly speed up the loading ???
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 12001357
Using getResource will have no effect on the loading speed whatever
0

Featured Post

[Webinar] Code, Load, and Grow

Managing multiple websites, servers, applications, and security on a daily basis? Join us for a webinar on May 25th to learn how to simplify administration and management of virtual hosts for IT admins, create a secure environment, and deploy code more effectively and frequently.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Java functions are among the best things for programmers to work with as Java sites can be very easy to read and prepare. Java especially simplifies many processes in the coding industry as it helps integrate many forms of technology and different d…
In this post we will learn how to connect and configure Android Device (Smartphone etc.) with Android Studio. After that we will run a simple Hello World Program.
Viewers will learn about basic arrays, how to declare them, and how to use them. Introduction and definition: Declare an array and cover the syntax of declaring them: Initialize every index in the created array: Example/Features of a basic arr…
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …
Suggested Courses

739 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question