Android Application – Spy Camera OS (Open Source)

Spy Camera OS (Open Source) Banner

Spy Camera OS (Open Source) Banner

It’s been a while I create new post.

This time I want to promote my android application :

Spy Camera OS (Open Source)
Everyone at one time will want to capture image without anyone notice it.

It’s an open source project which make me learn deeper about what I can do with camera in android and various device compatibility issues.
I’m thinking to write related Android camera utilization related to this application.

You can download the application at: Google Play
Source code:

Features (version 0.1.0):
- Small size application
- Full/max camera resolution
- Fast capture
- Back/front camera
- Auto shot with delay setting
- Face detection auto shot
- Black screen (touch to capture)
- Pinch to zoom
- Hide/show folder on Gallery
- Vibration
- Video Recording (New & Experimental)
- Save to internal/external storage

Jimmy's Blog – AB Slide Puzzle for Android

AB Slide Puzzle is a new slide puzzle game for Android, you can find it here:

Addictive classic slide puzzle game, with rich features.
Sizes available from 3×3 for beginners until 10×10 for hardcore players.
Decide your puzzle image or random it either from your whole sdcard or from a specific folder.
No more boring time, with smooth sliding touch. Try to get the highest score.

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Got Android [Gingerbread] and want to run J2ME JAD/JAR (emulate J2ME app)?

*Root-ed Android is required

This guide will help you to install J2ME emulator on your Android (mine is Gingerbread).

Case 1 : You have CMW (ClockWorldMod) installed.

  • Copy to your phone (
  • Go to CMW recovery mode
  • Flash the zip

Case 2 : Manual (I haven’t tested it – Do it with your own risk :p )

  • Copy Jbed.apk ( to /system/app
  • Copy ( to /system/lib
  • Reboot your android

After success installation you will see application “java” it can scan your sdcard for JAD & JAR file.


Android Market error on downloading (Error Downloading. There is insufficient space on the device.)

Today suddenly when I want to download an application from my Android tablet, I receiving this error : “Error Downloading xyzxyz. There is insufficient space on the device.”
It’s only displaying the error on downloading application with big size.

After browsing around, I found out that the cache folder (that I assume used by the market) is using small partition (around 20mb in my case).
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Java ME (J2ME) JSON Implementation For Array Object

One of the comment in JSON ME tutorial ( asking about how to parse this kind of JSON :

{”api_status”: ”OK”,”threads”: [{"tid": "2","title": "First Title" }, { "tid": "4", "title": "this is 2nd Title"}]}
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Jimmy's Blog – ISO 8583 Tutorial – Build and Parse ISO Message using JPOS library

ISO 8583 Tutorial article

In the beginning

OK after my article about ISO 8583 let’s go deeper into programming using Java + JPOS library.

Quote from JPOS website:

jPOS is a Java® platform-based, mission-critical, ISO-8583 based financial transaction library/framework that can be customized and extended in order to implement financial interchanges.

So first thing to do is download JPOS from it website.

Then we setup our development environment by creating Java Project using your favorites IDE. Add to the project all jar in JPOS library.
Here’s my Eclipse  package explorer looks like.
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Jimmy's Blog – ISO 8583 Tutorial – Introduction for Beginners

ISO 8583 Tutorial article


    Lately I’ve handle several financial project that allow me to understand bank and financial transaction better.
    All (or most?) financial transaction is using ISO 8583 standard, which at first I thought is a complicated standard. But after learn and see how it implemented it’s not as complex as I thought.
    In this post I will try to explain (based on my experience :) before I go deeper on the programming side.
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    Jimmy's Blog – Slide Number Puzzle Game with Echo2 Framework

    I’m checking Echo2 framework these couple days and try to make a simple game just to get to know the framework better.
    Since I’m not a JavaScript expert it’s good to know that there’s framework that I can use to create AJAX web app with desktop feel easily.
    The game is about re-ordering number by moving number to the empty space. It’s simple and fun, this sample is hardcoded to only support 3×3 size.

    I assume you know Java, JSP, Servlet basics.
    Download Echo 2 from : Echo2 Website
    I personally use Eclipse for my IDE.

    Step by step:
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    Jimmy's Blog – Send & Receiving SMS on specific Port with J2ME Application

    It’s been a while since I write an article, personal and work have been taken my time much lately.

    What I will write is not a new things, maybe a lot of article already write this kind of feature. But yesterday I see this kind of project request in so I decide to create a simple sample and write an article about it.

    Java Mobile (J2ME) application have a capability to send or receive SMS, but the phone need to support JSR-120 (Wireless Messaging API – WMA 1.0) or JSR-205 (WMA 2.0)
    How to check if the phone is supporting this? Easy way if the phone’s brand website. For example for Nokia E72 we can see the technical specifications at
    If your phone doesn’t have WMA library the application will prompt error (the error can be different from one phone to another)
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