MIDP???

Hi,
Now I know where to get the java packages I have been looking for. Thanks for the nice guy, how helped me with this matter. I am now trying to install MIDP to my windows 2000, but all my tries went in vain. I can't install MIDP, because I can't run the make command in DOS. I don't know, how to install the packet of GNUmake, since I have tried to follow the instructions attached and found in different websites, but I got many errors listed on my output, for example NMAKE: fatal error U1061: /F ..... Stop.
I have read many documents about installing MIDP, but would somebody tell me in easy and clear way, how to do it? I will be very gratefull if some one can instruct me step by step, how to install MIDP for Windows 2000!
Saari

http://java.sun.com/products/j2mewtoolkit/download.html
Installing the J2ME Wireless Toolkit
For more detailed installation directions, please refer to the J2ME Wireless Toolkit User's Guide and Release Notes.
If you have a previous version of the J2ME Wireless Toolkit installed, you should un-install the older version before installing this release.
Run the installer program and follow the installation instructions.
If you install the J2ME Wireless module (Forte for Java Plug-in), you should first make sure that Forte for Java is installed and working and then install the Forte for Java Plug-in. When installing the Forte for Java Plug-in, you should select "Integrated" as the setup type.
//Anders =)

Similar Messages

MIDP 1.0: Image to byte[] or serializing...

I would like to extract pixels from a MIDP 1.0 "Image" object through any means possible. I am currently under the impression that "Image.toString()" would just do something lame, like giving me a string like "Image@1234" that identifies the class and the instance -- which could in principle be used for mere instance comparison. Anyhow, if I could serialize an Image object to a file, and then read back the file in to a byte array, then I would be delighted. I want to stress that I don't care how convoluted the approach may be, as long as it is in plain-vanilla J2ME Java code for MIDP 1.0 and is capable of working on an actual device (as opposed to an emulator). Can I cast the Image to Object, and then somehow convert to byte[]? I don't care if I have to get down and dirty, hacking the platform-specific bytes of the full Object manifestation of the Image. Anyhow, I want to make it clear that any hard core hack, doing all kinds of things that would break on different VMs, etc, is totally fine. Messy is fine. I just want access to the binary data of the entire Image object, or, even better (but only icing on the proverbial cake), access to pixel data. If I can get the byte[] representation of Image, then I can hack the rest myself.

My goal was do a capture of the way things actually rendered on a device, kind of like a "screen capture", only a little more indirect (since I don't think there is a way to get access to the pixels of the LCD). What I have to do is render to an off-screen Image object and then retrieve pixel data from it using the platform-dependent getPixels() supplied by Motorola. You're going to think I'm crazy, but I send this image data to a web server via POSTs, which get collected and stored as a single file on my web server. Voila! A screen capture of how things actually render to an Image object on an actual device.
Everything works, except...
I can't get the Motorola "getPixels()" method to work in their emulator, so I'm worried
that it won't work on my Motorola T720 (something I haven't actually tried, though).
I get a "Uncaught Exception: java/lang/Error" message from the T720 emulator
when I run one of the Motorola demos (built using their scripts) when I add the
following code to the Canvas paint() method:
if (0 == iDidThis) { iDidThis = 1;
try
{ javax.microedition.lcdui.Image temp = Image.createImage( 120, 160 );
int [] rgbData = new int [120*160];
com.motorola.game.ImageUtil.getPixels ( temp, 0, 0, 1, 1, rgbData );
System.out.println("Captured Data");
catch( java.lang.ArrayIndexOutOfBoundsException e )
{ e.printStackTrace(); } }
This code runs only once, when the paint() method of the Canvas object is called for
the first time. Okay, I get the error message, but the "Bounce" demo (to which I added
the code block above) goes on to run just fine. (NOTE: The message "Captured Data"
is NOT printed in this scenario.)
I don't understand why the public static "com.motorola.game.ImageUtil.getPixels()"
method causes the "java/lang/Error" exception. (By the way, if I comment out the
call to this method, the code totally works without error, and I see the printed
statement "Captured Data" in the command window associated with the emulator.)
If my getPixels() call resulted in bad array access, then I would get the
java.lang.ArrayIndexOutOfBoundsException exception. But apparently this is
not what is going on.
I am really rusty with J2ME, so I don't even know the meaning of "java/lang/Error".
I assume it is different from a "class not found" exception, but I suspect that my
problem has to do with a fault in the emulator trying to execute the code for the
"com.motorola.game.ImageUtil.getPixels()" method.
My Motorola emulator (v7.5) is from around December, 2002, so it may be really old, and
maybe this was a known issue at that time that has since been resolved. I'm just never
tried to use platform-specific J2ME APIs before, so I don't know if what I am observing
is my fault, or is an emulator issue.
I'd be grateful for any ideas about what might be going wrong and for ideas about
possible solutions.

Questions on MIDP Security

Hi all,
I've a few questions on MIDP security to seek help:
1) Suppose I have a midlet to store confidential details on the mobile phone, if it doesn't make any connections to the internet, would anyone be able to retrieve the information I'd on the RMS?
2) Again, assuming no internet connection is made by the midlet. Suppose I've a login screen that prompts for a password & uses MD5. Can anyone crack it?
3) Is it possible to retrieve the midlet from the mobile phone itself onto a desktop?
Thanks for the help!

Yes, it is possible to retrieve the data stored in
RMS.
Just try it on a Nokia S60 phone:
1. download and install FExplorer (free file
explorer)
2. go to: c:\system\midp\<vendor>\untrusted\<midlet
name>\<?????> folder
3. select rms.db
3. choose options/send/SMS|MMS|e-mail|bluetooth|irda
Of course cracking is a harder work...does this means that I can follow your step 1 & goto whichever midlet that I'm interested in & send the JAR/JAD file via SMS/MMS/Email/BlueTooth/IRDA?

How to change the midp version in ktoolbar of wireless toolkit 2.1

Hi
How to change the version of midp in ktoolbar of wireless tool kit 2.1
though i tried to change the platform by selecting midp1.0 from settings
dialog box iam geeting alert:BadVersion Error
and the application is terminated abruptly
do i need to change any configuration files
please suggest me
as it is very urgent

The version of Java inside the database? If so - Not recommended at all ... the environment is NOT the same as your grandfathers JRE and there are a few noteworthy conditions.
How much of the Oracle Java Developer's Guide have you reviewed? http://www.oracle.com/pls/db102/to_toc?pathname=java.102%2Fb14187%2Ftoc.htm&remark=portal+%28Books%29

How to open files in MIDP (from the jar file)?

Hello,
I can't seem to figure out how to open a file that is in my MIDP applications jar-File.
From what I've found via Google, I assume that the way to do it should be by using
Connector.openInputStream("file:{path_to_my_file}")
but I only get the error
java.lang.ClassNotFoundException: com.sun.midp.io.j2me.file.Protocol
(Running the Emulator from Suns WTK 2.0 with DefaultColorPhone)
I've also tried file:// with the same result.
Any ideas?
Many thanks in advance!
Bjoern

I think I've found something that looks promising now:
Class.getResourceAsStream()

What's a good MIDP 2.0 implementation? Not Nokia 6600!

Hi All,
My company is developing an mobile application that connects to a server over HTTP... Nothing new. But we need the features of MIDP 2.0 and MMAPI because we take photos of items and upload these to the server, as well as some CustomItem for displaying these in a grid-like format.
The only one matching this profile (according to http://jal.sun.com/webapps/device/device?api=61) is the Nokia 6600. So we brought one. Unfortunately, it has a lot of bugs which make us unable to use these features. CustomItems don't display on the screen until they are forced to refresh (by moving over them, etc.) Changing Forms (using setDisplay) causes the app to 'randomly' crash. The ChoiceItem as type POPUP doesn't respond to the change event so they are practicly useless. To work around these we had to make a CustomForm class which recorded the state of the current form & cleared it as a new form for use by another 'screen'. Change the popups into opening another form for selection.
We also had to make the camera capture as a Form item (to prevent changing Displayables and causing random crashes). But the picture about to be taken would only update if you moved the cursor right or left (suprisingly up & down didn't do anything).
In the end it basically became unusable because of all these changes & work-a-rounds just to avoid the bugs in the implementation. Nokia weren't of much help either!
I really like the MIDP 2.0 profile, Sun's SDK is excellent, and was very quick & easy to get used too. So since a lot of the code already exists in J2ME and our server side is also J2EE, I would like to continue developement in this environment.
So I guess the purpose of writing this message is two-fold... 1) If you are thinking of serious MIDP 2.0 developement, don't use the 6600 and 2) Can anyone please tell me if there is a decent implementation of MIDP 2.0 & MMAPI out on the market? We really need to know as we don't want to go to other alternatives (like Microsoft) but we will if there are no other choices....
Thanks in advance for any help at all.

Hi, What I am providing is not really a solution to your problems.
In fact I am asking questions, currently I want to do the same thing as you i.e. uploading and downloading medias files to and from a Server, therefore my questions are:
-Can You access the default media files folders (Image, sounds and videos) ?
-Is it in these folders that you store the downloaded media files ? or are you obliged to store them elsewhere (RMS in particular ).
I am currently using Symbian C++ as developing langage but if I could move to Java It would be great because It's too hard to master symbian C++ (every thing is a nightmare...).
Thanks in advance for your anwser
Have a nine day

Urgent help in Midp porting

hi,
Im Rahulya, i'm final year student of b.e. computer.
I am working on my project ,which requires me to port midp on linux, and i guess anybody might have already ported midp,so i expect some help from u.
I have already ported KVM on redhat linux, now im porting midp on redhat linux. Almost it's done , but i have problem in midp event handling.
I have written stubs for the native functions which have not been defined in the midp/src/platform/native directory.(Eg. Java_com_sun_cldc_io_j2me_events_PrivateInputStream_readInt()
,this function is called in midpEvents.c)
In midpEvents.c the function
void Java_com_sun_midp_lcdui_Events_readInt(void)
calls the function
Java_com_sun_cldc_io_j2me_events_PrivateInputStream_readInt()
but the function is undefined. And i am not able to find anything related to how to port these native functions or how to implement these function.
So, if u have any idea about this ,please let me know
Help me out.
Thanks in advance.

hi
i'm having the same problem.

CLDC 1.1, MIDP 2.0 and JSR-75,135 in Java(TM) ME platform SDK 3.0, EA?

Hello.
I am trying to develope a "simple" MP3 playback application using "Java(TM) ME platform SDK 3.0, EA", but I have a problem.
I need to write the program for a device that has CLDC 1.1 and MIDP 2.0 configuration, with optional JSR-75 and JSR-135 packages.
When I start a new MIDP application project, I can choose the platform. Then I have 3 options:
DefaultCldcMsaPhone 1&2 --- CLDC-1.1 & MIDP-2.1 with MMAPI and File Connection (among others)
DefaultCldcPhone 1&2 --- CLDC-1.1 & MIDP-2.1 with MMAPI and File Connection (among others)
DefaultCldcJtwiPhone 1&2 --- CLDC-1.1 & MIDP-2.0 with only MMAPI and Wireless Messaging.
The other options are greyed, so I can not select a combination that has CLDC-1.1, MIDP-2.0, MMAPI and File Connect at the same time... I have tryied switching to the full NetBeans and then I have more flexibility choosing the device configuration and profile, using "Sun Java(TM) Wireless Toolkit 2.5.2 for CLDC" emulator platform. But when I run my application in the emulator, it takes some seconds to start playing the MP3. When I change to SDK 3.0, it plays inmediately.
So my question is, can I create a custom device that has everyting I need with "Java(TM) ME platform SDK 3.0, EA"?
Thank you in advance.
Marc Vallribera i Ros

Hi,
This problem is known and will be resolved in Final Release of SDK.
Now you can try to change configuration in <your_project_path>/project.properties file.
platform.bootclasspath and platform.profile parameters should be changed.
Igor

Pl help me.....in cldc/midp, cldc/pdap based application

application is developed in cldc/midp environment , will it run in pda devices which also has cldc configuration...
pl help me in this....
Thnaks in advance

CLDC will support jdk1.2 that's Personal java. So if you develope program using jdk1.2 it will support pda computer. Before u run this program using Pjee(personal java emulatior enivronment).
u run this program using "pjava file name"

How Can I create a dictionary file (dicionary.dat) in MIDP

Hi All,
I need your help.
Let me explain clearly my problem so u can advise me what to do.
In fact, I have a text file of words called (words.txt) and I would like to create a dictionary file (dict.dat)of those words and be able to load that dictionary so that I can read it.
Can you help how I can do that in MIDP. I am using Wireless Toolkit 2.5.
I need hint so I can do that.
Thanks

Hi All,
I need your help.
Let me explain clearly my problem so u can advise me
what to do.
In fact, I have a text file of words called
(words.txt) and I would like to create a dictionary
file (dict.dat)of those words and be able to load
that dictionary so that I can read it.
Can you help how I can do that in MIDP. I am using
Wireless Toolkit 2.5.
I need hint so I can do that.
Thankshello theotime,
did you find a way to do that?
I've got a problem similar to your: a list of 3000 wines to filter in a reasonable fast time.
how big is your dictionary?
with a text file encoded in UTF-8 I take about 60 seconds on the emulator, maybe with a binary format the search can be done faster...
before reading your post i've started this thread:
http://forum.java.sun.com/thread.jspa?threadID=5184516
...not very helpfull...right now...
please, let me know!!!
thank-you in advance,
daniele

Midp guide, how to use it.

Hi,
I like to make midp programs for my mobile device, but my mobile device supports only midp 1.0.
I was wondering is there a way to install midp 2.0 or above and how ?
Edited by: GNU_D on Jul 16, 2008 4:28 AM
wrong bold beginning tag.

Can I make something like a remote control through bluetooth, my goal is next>
a list of items represents a name of commands
play(p)
pause(b)
stop(h)
seek(f)
next(nx)
previus(pv)
shutdown(pd)
exit(x), when I press the item it must send a string to bluetooth, on the other side on a computer a server is reading the string, depending of a content it do some actions.
Now, about the bluetooth api, is it available in midp 1.0 ?

MIDP 2.0 reference Implementation Strange code

I' ve found a strange code in the http/Protocol.java of the Reference MIDP 2.0 Implementation.
Line 139 in the static initializer.
prop = Configuration.getProperty(
                            "com.sun.midp.io.http.max_persistent_connections");
        if (prop != null) {
            try {
                temp = Integer.parseInt(prop);
                if (temp <= 0) { //!!!!
                    maxNumberOfPersistentConnections = temp;
            } catch (NumberFormatException nfe) {
                // keep the default
        }Can somebody explain me, why it looks so? It must be ">".
Additionally, it looks like WTK22 emulator don't understands the property.

No ideas?

Re: Playing of MP3 audio format in MIDP 2.0

I have the same error ?
Has anybody found a solution ?
thx a lot
Niko

The MIDP 2.0 reference platform does not support MP3 playback.
The supported formats are noted in the MMADemo.html document that comes with the Wireless Toolkit:
"MMAPI supported formats in the J2ME Wirless Toolkit are:
Audio (same for full and Audio Building Block): PCM and WAV audio of all types.
MIDI: Type 0, Type 1 MIDI, and SP-MIDI"

Multiple socket connections with MIDP

dear experts,
I have a simple problem and I hope someone can help me to solve it.
I need to open a socket connection from multiple MIDlets on the same port.
This error occours when I try to make a socket push registration from the second (or third, or fourth...) midlet (I'm able to connect to the socket correctly from the first midlet that makes a push registration):
PushProcessor.run Exceptionjava.io.IOException: ServerSocket Open
java.io.IOException: ServerSocket Open
     at com.sun.midp.io.j2me.serversocket.Socket.open(+39)
     at com.sun.midp.io.j2me.socket.Protocol.openPrim(+127)
     at javax.microedition.io.Connector.openPrim(+121)
     at javax.microedition.io.Connector.open(+15)
     at javax.microedition.io.Connector.open(+6)
     at javax.microedition.io.Connector.open(+5)
     at it.myprj.midp.BasicPushMIDlet$PushProcessor.run(+16)
I would know if push registry API allows to have multiple connection on the same socket port.
any help is appreciated!
giovanni

in my opinion,
due to the fact when an app binds one port and a second app tries to bind the same (@same time) there will ever be a exception (from my point of view)!
an no i think that push registry cant register two apps on same port (eg datagram://5060)
hope this helps
chris

How JPG or GIF Image open in MIDP?

How my j2me application can support jpg or gif image format. I have tested png file in midp 1.0 and its not support other than png format( im not sure about midp 2.0 does it support or not). I have seen lot of mobiles those support gif and jpg file formats. Does j2me applications on those mobile can support other image formats?
Plus it is possible that i can develop my own decoder for jpg or gif format. I know it possible, but im talking related to its processing power consumption. Or is there any third party api exist to support jpg or gif file format on midp. Please r

Here is the code snap that read image from a URL.. I have tested this code on localhost & two different pc on lan in emulator.. but not in actuall mobile... but i hope it will work...
Image image = null ;
DataInputStream httpInput = null ;
DataOutputStream httpOutput = null ;
HttpConnection httpCon = null ;
String url = "http://localhost:8080/images/picture.png"
try
httpCon = (HttpConnection)Connector.open(url);
int bufferSize = 512 ;
     byte byteInput[] = new byte[bufferSize] ;
     ByteArrayOutputStream imageBuffer = new ByteArrayOutputStream(1024*50);
     httpInput = new DataInputStream( httpCon.openInputStream() );
               System.out.println("Http-Input Connecting Establish Successfully");
               httpOutput = new DataOutputStream( httpCon.openOutputStream() );
               System.out.println("Http-Output Establish Successfully");
int size = 0 ;
// read all image data ....
     while ( ( size = httpInput.read( byteInput , 0 , bufferSize ) ) != -1 )
                    imageBuffer.write( byteInput , 0 , size ) ;
// get byte from buffer stream
          byte byteImage[] = imageBuffer.toByteArray();
               System.out.println("read byte " + byteImage.length );
     // convert byte to image ...
     image = Image.createImage( byteImage , 0 , byteImage.length );
     return image ;
     //return null ;
catch( IOException e )
               System.out.println("\nUnable to Perform Image IO Operation with Host");
     return null ;
....................................

Keylistener in MIDP?

I am writing a MIDlet for cell phones/Blackberries. I want to be able to intercept the escape button (specifically on the Blackberry) and prompt the user to save/don't save/cancel. Unfortunately, there is no Keylistener in MIDP as far as I know. There are Blackberry specific APIs that fulfill this need, but I don't want to make the MIDlet specific to a Blackberry, so I can't use them.
Has anyone found a way to implement a Keylistener in MIDP? I was reading something about kAWT that sounded possible, but I really don't know much about it. Can anyone help me? Is there an easy way to write my own Keylistener?
Any help would be greatly appreciated.

The only way to "implement a KeyListener" in MIDP 1.0, is to have a Canvas subclass as the active displayable, and implement the method keyPressed() (in the Canvas subclass). Otherwise you're stuck with the high level UI with all it's querks...
But anyway, to capture the escape button you'll need to use some platform specific code, since there is no keycode defined for special keys in MIDP 1.0.
shmoove

MIDP???

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