JavaAndGeneralProgrammingNotes

First opensource project i have involved :)

2007-05-31T10:02:00.000+03:00

I have been working on a platform to create some services later, a contributor, Daniel Henninger , offered me to merge my work with his.

Today, i have officially joined openrealtime opensource project, which is also very near to be given Enterprise Open Source Readers Choice Award.

I will try to contribute my works about instant messaging plugin, im-gateway and also Smack library.

Open Realtime.

Ignite Realtime is the community site for the users and developers of Jive Software's open source Real Time Communications projects. Your involvement is helping to change the open RTC landscape.

Nokia 6230 Socket Problem

2007-05-22T21:07:00.000+03:00

If you are trying to use a socket connection with a nokia 6230 (version 5.26 and lower), you will probably get an exception unless you sign your midlet.

And unfortunately, nokia 6230 does not accept custom certificates. So the solution is to buy a CA certificate.

UI Design and Programming in Nokia Phones

2007-05-17T09:36:00.000+03:00

I strongly recommend you to watch the following visual presentation if you are interested in developing mobile applications for Nokia Phones.
http://sessions.sun.com/learning/javaoneonline/sessions/2006/TS-1281/index.html

How do you find bugs ?

2007-05-15T10:41:00.000+03:00

Try this one, if you are a Netbeans user ;)
FindBugs

My Whitepaper on the Weekly Newsletter

2007-04-13T21:34:00.000+02:00

http://www.netbeans.org/community/news/newsletter/2007-04-10.html

A Mobile MSN Project

2007-04-03T19:14:00.000+02:00

My whitepaper about the mobile project i have been working on for almost 13 months, has been released on Netbeans Wiki.

Thank you James, for your valuable help publishing this whitepaper.

3 weeks in holland

2007-02-17T00:13:00.000+02:00

I had been to Holland for 3 weeks for a mobile project that will go live in the next weeks. My lips are tied :) but i am planning to publish a detailed tutorial of the project in netbeans.org and java.sun.com . I am working on the tutorial and trying to get it ready for the review.

and here are some guys dressed-up for the south holland festival, not only these guys all the south holland were dressed-up like that from 7 to 77.

adding contact in msnp 13

2007-02-16T23:56:00.000+02:00

in msnp13, you have to send the ADL and RML commands too, besides the SOAP requests to add/block/remove contact. Because SOAP requests saves your changes to the permanent addres book, but ADL and RML make changes in your current session to notify the target contac

for blocking xxxx@hotmail.com, you have to send the following codes.


<< ADL 0 62
<ml><d n=”hotmail.com”><c n=”xxxx” l=”4″ t=”1″ /></d></ml>
>>ADL 0 OK
<< RML 1 62
<ml><d n=”hotmail.com”><c n=”xxxx” t=”1″ l=”2″ /></d></ml>
>>RML 1 OK

advanced session management

2007-02-16T23:47:00.000+02:00

In servlets, you really have a good control over the sessions. Forexample, here is a sample code from one of my server-client project;

To set the timeout to 1 minute and register the client;

session.setMaxInactiveInterval(60);
session.setAttribute("user",new Client(userID));

To get the same client with every of its request;

Client client=(Client) session.getAttribute("user");
int userID client.userID;

And here is our client class;


public class Client implements HttpSessionBindingListener {
public int userID;
public Client(int
userIDTMP) {
userID = userIDTMP;
}
public void valueBound(HttpSessionBindingEvent event) {
//Client Connected
userConnected(userID);
}
public void valueUnbound(HttpSessionBindingEvent event) {
//Client disconnected
//Session expired or invalidated by the servlet.
userDisconnected(userID)
}
}

canvas keycodes

2007-02-16T23:38:00.000+02:00

Canvas keyCodes for some phones.


//nokia, samsung, sony ericsson
static int keyFire = -5;
static int keyMenu = -6;
static int keyCancel = -7;
static int keyLeft = -3;
static int keyRight = -4;
static int keyUp = -1;
static int keyDown = -2;

//sagem (myX5-2)
static int keyFire = -5;
static int keyMenu = -7;
static int keyCancel = -6;
static int keyLeft = -3;
static int keyRight = -4;
static int keyUp = -1;
static int keyDown = -2;

//motorola (v3)
static int keyFire = -20;
static int keyMenu = -21;
static int keyCancel = -22;
static int keyLeft = -2;
static int keyRight = -5;
static int keyUp = -1;
static int keyDown = -6;

proxy in your java applications

2007-02-16T23:36:00.000+02:00



//Proxy port
String port="";

//Proxy host
String host="";

System.getProperties().put("proxySet","true");
System.getProperties().put("proxyPort",port);
System.getProperties().put("proxyHost",host);

xml string fixer

2007-02-16T23:29:00.000+02:00

If you encounter the following error;

"The entity name must immediately follow the ‘&’ in the entity reference"

you may filter the string, which you want to convert to xml document, with the following code.


private String xmlFixer(String xmlString) {
xmlString = xmlString.replaceAll("&([^; ]*);", "||VALIDXMLTAG||$1;");
xmlString = xmlString.replaceAll("&","&amp;");
xmlString = xmlString.replaceAll("\\|\\|VALIDXMLTAG\\|\\|([^; ]*);", "&$1;");
return (xmlString);
}

nokia 3650 : “file is corrupted”

2007-02-15T17:25:00.000+02:00

in nokia 3650, if you face "file is corrupted" error, while you are downloading an application with OTA, you can fix that issue by putting a midlet icon parameter to the jad file.

Example:


...
MIDlet-Icon: /res/icon2.png
...