[ This Blog Was Moved To : http://www.diknows.com ]
Welcome to my technical blog. In this blog, I’m trying not to reinvent the wheel.
Instead, I’m passing knowledge I gain in my technical life to anyone passes by this blog. I’m always hoping for the best, and I want to be a useful element in the wide open society of the internet.
You can share or suggest ( Technical- Programing ) topics to be discussed here, and I will be more than grateful to hear from you.
Recent Blog Posts
What is the Size of ” null ” Operator in Java?
Posted by Diaa Kasem on December 21, 2009
Today, in the Java Developers Group in LinkedIn; I found this question posted by Sneha Kesri. He asked “What is the size of ” null ” Operator in Java ?”. Actually, I never thought of it that way, but I continued reading.
Ramesh Babu Kotehal replied with the following :
How To Change Nagios Password
Posted by Diaa Kasem on December 21, 2009
Later this afternoon, a colleague asked my help to change the Nagios Password.
As I am not a Nagios user, I searched google for it and found this link about Nagios Installation.
So, lets cut to the chase, here are the steps I used:
Read/Write System Properties From/Into XML Using Groovy
Posted by Diaa Kasem on December 20, 2009
Inspired by the following post ( http://www.ibm.com/developerworks/library/j-tiger02254.html ), I created the following code snippets to Read / Write System properties from/into XML files.
Writing system properties into XML file (output.xml):
def properties = System.properties
def fos = new FileOutputStream("output.xml")
properties.storeToXML(fos,"")
Testing MySQL GET_LOCK() using PHP
Posted by Diaa Kasem on December 20, 2009
Early this morning, a friend of mine was stuck in GET_LOCK() MySQL function. She was using it in her application. The function was working very well from the MySQL Console , but it was not working from PHP ( Neither from her application, nor from PHPMyAdmin web interface).She asked my help, so I searched Google, and had a look at the MySQL Documentation about this function.
This function as it appears in the MySQL Documentation, does the following :
Simple Apache Ant Tutorial
Posted by Diaa Kasem on December 16, 2009
Introduction
Ant is free and open source build tool, written in Java, helps in automating the entire build process of a Java development project.
- Ant uses XML build files.
- By default, Ant looks for a build file named build.xml.
- The build file contains information about how to build a particular project.
- Each project contains multiple targets like creating directory, compiling source codes.
- Target can depend on other targets.
- Targets contain tasks.
- Behind each task is a Java class that performs the described work.
Creating Basic Financial JSF CRUD Application
Posted by Diaa Kasem on December 14, 2009
Today, I’m trying to revise my JSF, Hibernate Knowledge. I’m Creating a CRUD application.
Its a simple financial web application where there are admin/viewer privileges. The application will not be fully created in this tutorial.
The main idea is that the Admin can deposit/withdraw and the application should show his financial status to subscribed viewers.
In this basic tutorial I will introduce how to Generate JSF/Hibernate CRUD application using Netbeans 6.8 as a starting point for this small project.
Keep Skype Alive Script
Posted by Diaa Kasem on December 14, 2009
I started to dislike skype.
- Skype Application is closed source.
- They (Skype Company) force users to use Untested Beta Version.
- Upgrades are very slow for linux.
Lately, I had an issue the last few days with skype, It crashes while I’m talking and being away from the pc.
So, I tried to make a solution to keep skype alive.
Scheduling Windows Server Rebooting
Posted by Diaa Kasem on December 9, 2009
Recently, I was asked to schedule rebooting of some windows server 2003 machines.
I previously knew the command for shutting down is basically
shutdown -r
Which is with some addition if any one wants
Connecting Twitter, Facebook, WordPress And LinkedIn For More Audiance
Posted by Diaa Kasem on December 8, 2009
Recently, I have registered in Twitter and LinkedIn. I already have WordPress and Facebook accounts. I know there are connections between these web applications, but I’ve never tried using them. I don’t use LinkedIn very often, and I don’t open Twitter at all.
Recently, I admired Twitter because its simple. Subscribing to professionals in your career, helps you recieve latest news, wonderful ideas and lots of arguments and suggestions instantly. So, I thought why not to connect them together.
Grails, MySQL : Cannot create PoolableConnectionFactory
Posted by Diaa Kasem on December 5, 2009
Ok, You read this post I assume you face the same problem I faced.
Quick Solution :
If this is your MySQL Connection URL :
“jdbc:mysql://localhost/DN_NAME”
Change it to
Linux BroadCom Wlan Driver Solution
Posted by Diaa Kasem on December 2, 2009
Recently, I’ve upgraded from openSUSE 11.1 to 11.2. In 11.1 WLAN Card was working like a charm, when I upgraded It didn’t work as expected. So, I used my USB Modem (Mobinil) and searched google.
I found a program called <b>b43-fwcutter</b>. I tried hard to use it, but in vain.
Grails Domains Internationalition
Posted by Diaa Kasem on November 25, 2009
I am currently working at a Project that should be internationalized ( Arabic – English ). I am still developing it. I needed list of countries to be internationalized and I wanted it to be in the domain constraints (inList). I may later put the data in the database, but for the time being; I’m putting the data in the domain class.
Here is what I did
Shell script to count number of Mega Bytes used in PPP connections
Posted by Diaa Kasem on October 31, 2009
Recently I bought, a USB Stick modem that is limited to 500 MB, after the 500 MB each 3 MB = 1 LE. For that I needed to create a counter to check my usage .. not to exceed the 500 Limit. so here it is :
Suse 11.1 Linux and Egypt Mobinil 3G USB Stick Modem
Posted by Diaa Kasem on October 18, 2009
Yesterday, I went to Mobinil branch in Tanta, I wanned to buy a USB Stick modem. My issue was that I’m using Linux SUSE 11.1, and I know that the USB Stick modem support is for Windows and Mac OSs only. So, I wanned to know for sure.
There I asked a sales person called “Ahmed Salamah” ( who by the way was really cooporative ).
Mounting NTFS Drive ( Read, Write ) to all users.
Posted by Diaa Kasem on October 12, 2009
Recently, I had the issue that my external HDD can’t be mounted as ( Read , Write ). It was getting mounted as read only for root user only. I needed to mount it as Read Write for all users.
The issue :
The HDD was not mounted properly , so that it needs to be fixed.
The solution:
connect the HDD ..
Groovy Very Basic Statistics Tool
Posted by Diaa Kasem on October 8, 2009
Virus Removal Groovy Script
Posted by Diaa Kasem on October 6, 2009
As I’m a Linux User since years ago. I faced the problem of NO Viruses at my PC, but tons of viruses on my Flash Memory ( USB Stick ), due to copying files to/from windows machines.
Actually, I was never affected by these viruses on my own, but I do NOT want to be a transportation facility for the virus to spread across other machines.
First Day As A Google Reader JAVA API Contributer
Posted by Diaa Kasem on September 29, 2009
Actually I am more of celibarating than announcing my first contribution to The Unofficial Google Reader APIs Java implementation. Today, I proudly commited some code to this great project that helped me out in my latest project.
I Added the following functionalities :
Simple Idea For Passing Data To Huge Number of Users
Posted by Diaa Kasem on August 25, 2009
Three years ago, I had a situation when I was building a web application for a stocks consultant. It should provide users with updates , in a page that gets automatically refreshed every 1 minute.
My problem was that when the number of logged in users exceed 100 users, the page turns to be extreemly slowly rendered.
The problem was that I made that page retrieve the data from database every time the page refresh. Ofcourse it should.
Windows Start-up Date
Posted by Diaa Kasem on August 19, 2009
Recently I Needed to know when was the Windows Server Machine restarted and Why ?
So, I executed the command in CMD
net statistics serverThe Start up time is : Statistics since 8/16/2009 5:40 AM Read More...
