Learning bluetooth midlets -need help
hi all ,
i am beginner in bluetooth midlets.And Im having no prior knowledge how bluetooth works.Though i hav learnt makin basic midlets with high level and low level user interface including record management.There hav been 3 days Iam searchin for some material and ebook on the net.But didnt get any useful stuff.
Can somebody suggest me a book or tutorial to start with.I dont have much time an i know almost nothin of this bluetooth.
I'll b grateful.....thnx in advance
take a look at [http://developers.sun.com/mobility/midp/articles/wtoolkit/]
Also, look into the bluetooth spec, know whats going on underneath the hood and everything will
make a little more sence.
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Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution!" This will help the rest of the community with similar issues identify the verified solution and benefit from it. -
Hi, All BW Guru,
I am new to SAP BW, My Company is implementing SAP BW.
i need Help from you all to Learn BW. if any one have below mention book then please send me...
please.....
BW305 (Reporting & Analysis), BW310 (Data Warehousing), BW330 (Data Modelling), BW350 (Data Extraction),
BW365 (Authorisation) BW370 (BPS)
Your input will be highly appreciated....
Thanks Regards
Kiran PatelHi, sreekanth sangaraju
it's really happy to see your reply.
if you have document with quite big size then you can send it by some file transfer website like..
http://www.yousendit.com/
http://www.sendthisfile.com/?rc=transferfile
if possible please send.
thanks
Kiran Patel -
Need help with my HttpConnection From Midlet To Servlet...
NEED HELP ASAP PLEASE....
This class is supposed to download a file from the servlet...
the filename is given by the midlet... and the servlet will return the file in bytes...
everything is ok in emulator...
but in nokia n70... error occurs...
Http Version Mismatch shows up... when the pout.flush(); is called.. but when removed... java.io.IOException: -36 occurs...
also i have posted the same problem in nokia forums..
please check also...
http://discussion.forum.nokia.com/forum/showthread.php?t=105567
now here are my codes...
midlet side... without pout.flush();
public class DownloadFile {
private GmailMidlet midlet;
private HttpConnection hc;
private byte[] fileData;
private boolean downloaded;
private int lineNumber;
// private String url = "http://121.97.220.162:8084/ProxyServer/DownloadFileServlet";
private String url = "http://121.97.221.183:8084/ProxyServer/DownloadFileServlet";
// private String url = "http://121.97.221.183:8084/ProxyServer/Attachments/mark.ramos222/GmailId111d822a8bd6f6bb/01032007066.jpg";
/** Creates a new instance of DownloadFile */
public DownloadFile(GmailMidlet midlet, String fileName) throws OutOfMemoryError, IOException {
System.gc();
setHc(null);
OutputStream out = null;
DataInputStream is= null;
try{
setHc((HttpConnection)Connector.open(getUrl(), Connector.READ_WRITE));
} catch(ConnectionNotFoundException ex){
setHc(null);
} catch(IOException ioex){
ioex.printStackTrace();
midlet.alertScreen = new AlertScreen("Error C1", ioex.toString(),
null, AlertType.ERROR);
midlet.alertScreen.setTimeout(Alert.FOREVER);
midlet.display.setCurrent(midlet.alertScreen);
try {
if(getHc() != null){
getHc().setRequestMethod(HttpConnection.POST);
getHc().setRequestProperty("Accept","*/*");
getHc().setRequestProperty("Http-version","HTTP/1.1");
lineNumber = 1;
getHc().setRequestProperty("CONTENT-TYPE",
"text/plain");
lineNumber = 2;
getHc().setRequestProperty("User-Agent",
"Profile/MIDP-2.0 Configuration/CLDC-1.1");
lineNumber =3;
out = getHc().openOutputStream();
lineNumber = 4;
PrintStream pout = new PrintStream(out);
lineNumber = 5;
pout.println(fileName);
lineNumber = 6;
// pout.flush();
System.out.println("File Name: "+fileName);
lineNumber = 7;
is = getHc().openDataInputStream();
long len = getHc().getLength();
lineNumber = 8;
byte temp[] = new byte[(int)len];
lineNumber = 9;
System.out.println("len "+len);
is.readFully(temp,0,(int)len);
lineNumber = 10;
setFileData(temp);
lineNumber = 11;
is.close();
lineNumber = 12;
if(getFileData() != null)
setDownloaded(true);
else
setDownloaded(false);
System.out.println("Length : "+temp.length);
midlet.setAttachFile(getFileData());
lineNumber = 13;
pout.close();
lineNumber = 14;
out.close();
lineNumber = 15;
getHc().close();
} catch(Exception ex){
setDownloaded(false);
ex.printStackTrace();
midlet.alertScreen = new AlertScreen("Error C2+ line"+lineNumber,
ex.toString()+
" | ",
null, AlertType.ERROR);
midlet.alertScreen.setTimeout(Alert.FOREVER);
midlet.display.setCurrent(midlet.alertScreen);
public HttpConnection getHc() {
return hc;
public void setHc(HttpConnection hc) {
this.hc = hc;
public String getUrl() {
return url;
public void setUrl(String url) {
this.url = url;
public byte[] getFileData() {
return fileData;
public void setFileData(byte[] fileData) {
this.fileData = fileData;
public boolean isDownloaded() {
return downloaded;
public void setDownloaded(boolean downloaded) {
this.downloaded = downloaded;
}this is the midlet side with pout.flush();
showing Http Version Mismatch
public class DownloadFile {
private GmailMidlet midlet;
private HttpConnection hc;
private byte[] fileData;
private boolean downloaded;
private int lineNumber;
// private String url = "http://121.97.220.162:8084/ProxyServer/DownloadFileServlet";
private String url = "http://121.97.221.183:8084/ProxyServer/DownloadFileServlet";
// private String url = "http://121.97.221.183:8084/ProxyServer/Attachments/mark.ramos222/GmailId111d822a8bd6f6bb/01032007066.jpg";
/** Creates a new instance of DownloadFile */
public DownloadFile(GmailMidlet midlet, String fileName) throws OutOfMemoryError, IOException {
System.gc();
setHc(null);
OutputStream out = null;
DataInputStream is= null;
try{
setHc((HttpConnection)Connector.open(getUrl(), Connector.READ_WRITE));
} catch(ConnectionNotFoundException ex){
setHc(null);
} catch(IOException ioex){
ioex.printStackTrace();
midlet.alertScreen = new AlertScreen("Error C1", ioex.toString(),
null, AlertType.ERROR);
midlet.alertScreen.setTimeout(Alert.FOREVER);
midlet.display.setCurrent(midlet.alertScreen);
try {
if(getHc() != null){
getHc().setRequestMethod(HttpConnection.POST);
getHc().setRequestProperty("Accept","*/*");
getHc().setRequestProperty("Http-version","HTTP/1.1");
lineNumber = 1;
getHc().setRequestProperty("CONTENT-TYPE",
"text/plain");
lineNumber = 2;
getHc().setRequestProperty("User-Agent",
"Profile/MIDP-2.0 Configuration/CLDC-1.1");
lineNumber =3;
out = getHc().openOutputStream();
lineNumber = 4;
PrintStream pout = new PrintStream(out);
lineNumber = 5;
pout.println(fileName);
lineNumber = 6;
pout.flush();
System.out.println("File Name: "+fileName);
lineNumber = 7;
is = getHc().openDataInputStream();
long len = getHc().getLength();
lineNumber = 8;
byte temp[] = new byte[(int)len];
lineNumber = 9;
System.out.println("len "+len);
is.readFully(temp,0,(int)len);
lineNumber = 10;
setFileData(temp);
lineNumber = 11;
is.close();
lineNumber = 12;
if(getFileData() != null)
setDownloaded(true);
else
setDownloaded(false);
System.out.println("Length : "+temp.length);
midlet.setAttachFile(getFileData());
lineNumber = 13;
pout.close();
lineNumber = 14;
out.close();
lineNumber = 15;
getHc().close();
} catch(Exception ex){
setDownloaded(false);
ex.printStackTrace();
midlet.alertScreen = new AlertScreen("Error C2+ line"+lineNumber,
ex.toString()+
" | ",
null, AlertType.ERROR);
midlet.alertScreen.setTimeout(Alert.FOREVER);
midlet.display.setCurrent(midlet.alertScreen);
public HttpConnection getHc() {
return hc;
public void setHc(HttpConnection hc) {
this.hc = hc;
public String getUrl() {
return url;
public void setUrl(String url) {
this.url = url;
public byte[] getFileData() {
return fileData;
public void setFileData(byte[] fileData) {
this.fileData = fileData;
public boolean isDownloaded() {
return downloaded;
public void setDownloaded(boolean downloaded) {
this.downloaded = downloaded;
}here is the servlet side...
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
if(request.getMethod().equals("POST")){
BufferedReader dataIN = request.getReader();
String fileName = dataIN.readLine();
File file = new File(fileName);
String contentType = getServletContext().getMimeType(fileName);
response.setContentType(contentType);
System.out.println("Content Type: "+contentType);
System.out.println("File Name: "+fileName);
int size = (int)file.length()/1024;
if(file.length() > Integer.MAX_VALUE){
System.out.println("Very Large File!!!");
response.setContentLength(size*1024);
FileInputStream fis = new FileInputStream(fileName);
byte data[] = new byte[size*1024];
fis.read(data);
System.out.println("data lenght: "+data.length);
ServletOutputStream sos = response.getOutputStream();
sos.write(data);
// out.flush();
}else{
response.setContentType("text/plain");
PrintWriter out = response.getWriter();
BufferedReader dataIN = request.getReader();
String msg_uid = dataIN.readLine();
System.out.println("Msg_uid"+msg_uid);
JDBConnection dbconn = new JDBConnection();
String fileName = dbconn.getAttachment(msg_uid);
String[] fileNames = fileName.split(";");
int numFiles = fileNames.length;
out.println(numFiles);
for(int i = 0; i<numFiles; i++){
out.println(fileNames);
out.flush();
out.close();
Message was edited by:
Mark.Ramos2221) Have you looked up the symbian error -36 on new-lc?
2) Have you tried the example in the response on forum nokia?
3) Is the address "121.97.220.162:8084" accessible from the internet, on the device, on the specified port? -
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I'am aware that J2sdk SE has PrintJob and Book objects that actually simplify printing, but MIDP 1 has nothing of the sort.
1.) what would you guys suggest? Is there a way for me to create a printer program in MIDP or do I have to create it with J2sdk SE?
2.) if ever that the printer program would have to be written with j2sdk SE, how would I go about passing the actual data from the MIDlet to the program? Is it possible, and if it is, is there any way I could synchronize both?
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I'm learning JAVA for more than 3 weeks and I really need help...
I'm using SDK1.4 with Elixir IDE Lite (+patch installed).
In the following screenshot <http://www.geocities.com/jonny_fyy/pics/java1.png>, I've got this error (when I right-click -> Compile) . Do you know what it means & how can I solve it?
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Here's my java file... <http://www.geocities.com/jonny_fyy/FahToCeltxt.java>
Thanks for helping :>Hi jonny
One step ahead:
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
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TextField msgField ;
String msg = null;
int msgValue;
Label title;
Button b;
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title = new Label("Enter degrees in Fahrenheit: ");
add(title);
msgField = new TextField (10);
add(msgField);
// msgField.addTextListener(this);
b = new Button("Convert");
b.addActionListener(this);
add(b);
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// msgValue = Integer.parseInt(msgField.getText());
// repaint();
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Need help in creating a java program
Hi everyone.
I'd like to say before i start about my problem, that i've only begun learning java and my teacher hasn't explained anything at all. He only showed us by doing it himself and then showing us the final version. I've searched a little on how to program but i get little success in finding a good tutorial.
I need help creating a program which has been assigned to me due in a few days in which i can't contact my teacher for help.
I need to write a java program which inputs 3 items. The number of kilometres you drove, the number of litres of gas you used and the price you paid for the gas. Then, the program must calculate the number of litres used per 100km driven, which is litres divided by kilometres times 100, how much it costs to drive 100km, which is the result (a) times the price per litre and the number of miles per American gallon of gas ( one American gallon = 3.785 litres, and one mile = 1.609 km.
The program has to output my name, the inputs given, the results computed and a message saying "Program Complete".
To give you what i've done to begin with, from what i understood, is:
import javax.swing.JOptionPane;
public class prog1
public static void main(String args[])
final double americanGallon = 3.785;
final double mile = 1.609;
kilometresDriven,
gasUsed;
priceOfLiterGas;
System.out.println("My Name");
System.out.println("Number of kilometres driven:");
kilometresDriven = JOptionPane.showInputDialog ("Kilometres Driven");
System.out.println("Number of Litres of gas used:");
gasUsed = JOptionPane.showInputDialog ("Litres of gas used");
System.out.println("Price of a liter of gas:");
priceOfLiterGas = JoptionPane.showInputDialog("Price per liter");
Up to now, that's all i've got. i know i'm wrong, but i'm not sure how to do this. Could someone give me an outline of what this program is suppose to look like?
Thanks in advance.Here's an update on my program. I've worked on certain details and would need your comments whether it contains errors. I'd also want to know if it would work or not because i don't know how to check it on my computer.
Here's the update:
import javax.swing.JOptionPane;
public class Prog1
public static void main(String args[])
String name;
double kmDriven;
double litresUsed;
double pricePaidForGas;
double priceOfALiter;
name = JOptionPane.showInputDialog("Name");
input = JOptionPane.showInputDialog("Number of km driven");
kmDriven = Double.parseDouble (input);
input = JOptionPane.showInputDialog("Number of litres of gas used");
litresUsed = Double.parseDouble (input);
input = JOptionPane.showInputDialog("Price paid for gas");
pricePaidForGas = Double.parseDouble (input);
input = JOptionPane.showInputDialog("Price of a litre of gas");
priceOfALiter = Double.parseDouble (input);
a = (litresUsed/kmDriven)*100;
b = ((litresUsed/kmDriven)*100)*priceOfALiter);
c = (kmDriven/1.609)
System.out.println("Name:" + name);
System.out.println("Number of litres used per 100km:" + a);
System.out.println("Cost of driving 100km" + b);
System.out.println("Number of miles per American Gallon of Gas:" + c);
System.out.println("Program Complete");
System.exit(0);
Comments please.
Thanks in advance
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