Google Maps API in Java ME

Mon, 2010-05-31 19:28 — leelight

Wed, 2009-10-21 16:41 — leelight

News from J2mepolish site:

Mobile Developer's Guide- first edition out now

Some JSR 179 Location API J2ME examples

Thu, 2009-10-01 18:49 — leelight

The first 3 examples come from http://www.j2melbs.com/ .
1, The basic Location Question
Download: http://www.j2melbs.com/content/codes/lbs/CoordinateAlert.java

import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import javax.microedition.location.*;
 
public class CoordinateAlert extends MIDlet implements CommandListener {
 
  private Display display;	
  private Form mainForm;
  private Alert positionAlert;
 
  public CoordinateAlert() {
 
    mainForm = new Form("HelloMIDlet");

J2ME

Test Push Registry in Wireless Toolkit 2.5(WTK)

Wed, 2009-04-15 15:55 — leelight

There is many articles about how to test Push Registry with sms, here will give some hints how to test it in WTK.

I. Edit *.jad configuration

MIDlet-1: appname,/app.png,com.easywms.midlet.midletClass
MIDlet-Permissions: javax.microedition.io.PushRegistry
MIDlet-Push-1: sms://:50000, com.easywms.midlet.midletClass, *

or MIDlet-Push-1: sms://:50000, midletClass, *

II. The app must be install via OTA in WTK, this is required for WTK Push testing

J2ME

Get CellId and other Imformation from mobile phones via J2ME

Mon, 2009-03-30 00:53 — leelight

Without GPS or Network Operator we can still use the Location Based Service, via the help of CellId(Cell ID the location of Cell Identities of GSM-networks). Google has one enormous database of cell ids which are linked to a longitude and latitude position, that why Google Map client know where you are even you have no embedded GPS--it is not open.

The JavaME Frequently Asked Questions List (T)

Sun, 2009-03-01 21:51 — leelight

The JavaME Frequently Asked Questions List

The JavaME Frequently Asked Questions list is a compilation of questions that are
asked frequently by people using
Java 2 Micro Edition
.

J2ME

"Cannot allocate memory" OutofMemory when call Ant to build Polish project in Tomcat

Wed, 2009-02-25 04:07 — leelight

I have written one J2EE web service which was run in Tomcat, this service will call Ant to build one J2ME Polish project. It can be run without problem, aber will got such exception "ProGuard is unable to obfuscate: java.io.IOException: Cannot run
program "java": java.io.IOException: error=12, Cannot allocate memory" after several times' building. This is abvious OutofMemory exception.

Tomcat service was run on CentOS linux, the first thing what i thought is to increase the initial memory of Tomcat.