Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Read Image - JavaME

Posted on 2011-02-13
20
Medium Priority
?
332 Views
Last Modified: 2013-11-24
What other api can i use to create images beside createimage? I am using Blackberry and J2ME.

Image image = Image.createImage(input);
0
Comment
Question by:bbdriver
  • 10
  • 8
20 Comments
 
LVL 92

Expert Comment

by:objects
ID: 34885444
what problem are you having with createImage()?
Whats 'input'?
0
 

Author Comment

by:bbdriver
ID: 34885674
input is InputStream input = filenames.openInputStream();      

I have a set of images, when i use createImage(), it either returns the created image or throws IOException, Exception. But there are some images that doesn't go anywhere. I thought there might be other api that i can try out.
0
 
LVL 92

Expert Comment

by:objects
ID: 34885683
none that I'm aware of.
0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 

Author Comment

by:bbdriver
ID: 34885691
Do you have any idea why the program will stop when i try to use createImage() without throwing any exception?
0
 

Author Comment

by:bbdriver
ID: 34885730
I am able to open it in phone imageviewer but it can't be processed using my program.
0
 
LVL 92

Expert Comment

by:objects
ID: 34885751
could be a deadlock, hard to say without see your code
0
 

Author Comment

by:bbdriver
ID: 34885760
This is the code.

FileConnection filenames = (FileConnection)Connector.open(main_directory +  "testFolder" + "/"
                                                + imageName ,Connector.READ);
if (filenames.exists()) { InputStream input = filenames.openInputStream();      
try {      Image image = Image.createImage(input);            
if(image != null){               
                                                      updateContent("READING: " + imageName);
                                                }
                                                else continue;                  
                                          }
                              
                                          catch (IOException e) {                                                
                                                updateContent("READING: " + imageName);                                                

                                          } catch (Exception e)  {
                                                updateContent("READING: " + imageName);      

                                          }
                                          input.close();      
                                    }
                                    filenames.close();
0
 

Author Comment

by:bbdriver
ID: 34885788
public void image()
            { for(;;)
                  {
                        String content = "", description = null, Exceptiondescription=null;
                        JSONObject outer = new JSONObject();            

                        try{
                              FileConnection fc = (FileConnection)Connector.open(main_directory + imageFolder + "/");
                              FileConnection file = (FileConnection)Connector.open(main_directory + imageFolder + ".json" ,Connector.READ_WRITE);                              
                              if(!file.exists()) { file.create(); }
                              file.setWritable(true);
                              OutputStream out = file.openOutputStream();
                              Enumeration filelist = fc.list("*", true);
                              while(filelist.hasMoreElements()) {
                                    imageName = (String) filelist.nextElement();
                                    FileConnection filenames = (FileConnection)Connector.open(main_directory + imageFolder + "/"
                                                + imageName ,Connector.READ);
                                    if (filenames.exists()) {
                                          InputStream input = filenames.openInputStream();      
                                          try {
                                                Image image = Image.createImage(input);
                                                if(image != null){
                                                      toJSON(outer, "OK", "filename:" + imageName);  
                                                }
                                                else continue;                                                
                                          }
                                          catch (IOException e) {
                                                description = e.toString();
                                                toJSON(outer,"Caught IOException:" + description, "filename:" + imageName);
                                                

                                          } catch (Exception e)  {
                                                Exceptiondescription = e.toString();
                                                toJSON(outer, " Caught Exception:" + Exceptiondescription, "filename:" + imageName);
                                          }                                    
                                          input.close();      
                                    }
                                    filenames.close();
                              }      
                              file.close();
                              fc.close();
                              out.write(outer.toString().getBytes());
                              out.flush();
                              out.close();                                          
                              updateContent("READING: " + "COMPLETED");                   
                        }                                          
                        catch (IOCancelledException e)
                        {
                              System.out.println(e.toString());
                              return;
                        }
                        catch (IOException e)
                        {
                              errorDialog("IO EXCEPTION: " + e.toString());
                              return;
                        }      
                        catch(Exception e){
                              errorDialog("EXCEPTION" + e.toString() );
                        }                  
                  }
            }
0
 

Author Comment

by:bbdriver
ID: 34885846
I am not sure if it's deadlock. It doesn't look like it.
0
 
LVL 92

Expert Comment

by:objects
ID: 34885909
you repeatedly read the same directory
and if you get an exception you don't close the connections or streams
not sure if thats the cause but worth fixing up
0
 

Author Comment

by:bbdriver
ID: 34885994
Does it mean that each time I get an exception, i will have to close the connection? Cause, if i close the connection, i wont be able to continue reading the next image file.
0
 
LVL 92

Expert Comment

by:objects
ID: 34886012
If you get an exception, you try and open the connection again
0
 

Author Comment

by:bbdriver
ID: 34886064
I have tried that and got FileIOException,

I am  trying this..


try {
                                                updateContent("" + input);
                                                Logger.logEventInfo("READING1: " + imageName);
                                                Image image = Image.createImage(input);            
                                                Logger.logEventInfo("READING2: " + imageName);
                                                if(image != null){

                                                      updateContent("READING3: " + imageName);
                                                      toJSON(outer, "OK", "filename:" + imageName);
                                                }
                                                else continue;                                
                                          }                              
                                          catch (IOException e) {
                                          description = e.toString();
                                                updateContent("READING: " + imageName);
                                                Logger.logEventInfo("READING4: " + imageName +"\n");
                                                toJSON(outer, "Caught IOException:" + description, "filename:" + imageName);
                                                
                                          } catch (Exception e)  {

                                                Exceptiondescription = e.toString();
                                                updateContent("READING: " + imageName);      
                                                Logger.logEventInfo("READING5: " + imageName);
                                                toJSON(outer," Caught Exception:" + Exceptiondescription, "filename:" + imageName);
                                          }      
                                          input.close();      
                                    }
                                    filenames.close();


This is what I have in print statement. And when it reach to image3, it will stop.

I: List of files and directories under SD CARD:
I: READING1: image1.jpg
I: READING2: image1.jpg
I: READING1: image2.jpg
I: READING4: image2.jpg
I: READING1: image3.jpg
0
 
LVL 92

Expert Comment

by:objects
ID: 34886100
log details of the exception to help determine why an exception  is occurring

are you sure it hung and that that it isn't just exitting the method?
0
 

Author Comment

by:bbdriver
ID: 34886156
I don't think it's exiting the method. How do I log the detail of exception?
0
 
LVL 92

Expert Comment

by:objects
ID: 34892133
> I don't think it's exiting the method.

add some logging to check

> How do I log the detail of exception?

log the exception including preferably the stack trace
0
 

Accepted Solution

by:
bbdriver earned 0 total points
ID: 34894167
Hi.. i think i got it. I have changed Image image = Image.createImage(input); to byte[] b3=str.getBytes();
                                                Image image = Image.createImage(b3, 0, 0);

And it works now. I think there are is some issue with just create image with input stream.
0
 
LVL 92

Expert Comment

by:objects
ID: 34902211
may have been a problem with the input stream,
0
 
LVL 60

Expert Comment

by:Kevin Cross
ID: 37514365
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
0

Featured Post

Independent Software Vendors: 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!

Question has a verified solution.

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

For beginner Java programmers or at least those new to the Eclipse IDE, the following tutorial will show some (four) ways in which you can import your Java projects to your Eclipse workbench. Introduction While learning Java can be done with…
Introduction This article is the second of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers the basic installation and configuration of the test automation tools used by…
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…
This tutorial covers a practical example of lazy loading technique and early loading technique in a Singleton Design Pattern.
Suggested Courses

971 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