Wednesday, November 25, 2009
Google Chrome OS
Sunday, October 25, 2009
Tuesday, October 20, 2009
Tuesday, September 22, 2009
System Implementation.
Sunday, September 13, 2009
Monday, August 31, 2009
Tuesday, August 25, 2009
NUS Using Others tutorials. About Networking but much useful
Networks For Beginners
Thursday, July 2, 2009
useful onlione free books for IT Professionals and IT Students.
http://www.intelligentedu.com/blogs/post/category/free_computer_books
http://www.pdftutorials.com/
http://www.intelligentedu.com/
Friday, June 5, 2009
Code projects.
Welcome to The Code Project
23,519 free Software development and Design articles, code snippets, discussions, and news - all provided free by the best bunch of developers on the net.
http://www.codeproject.com/KB/webservices/ifs.aspx
http://www.codeproject.com/KB/trace/tracetool.aspx
Friday, May 1, 2009
trace online users....
Finding the IP address of an email sender in GMail, Yahoo Mail, and Outlook
Let’s go ahead and take a look at how you would do this for Google, Yahoo and Outlook since those are the most popular email clients.
Google’s Gmail
1. Log into your account and open the email in question.
2. Click on the down arrow that’s to the right of the Reply link. Choose Show Original from the list.
Now here’s the technical part that I was telling you about earlier! You need to look for the lines of text that start with “Received: from“. It might be easier to simply press Cntrl + F and perform a search for that phase. You’ll notice that there are several Received From’s in the message header. This is because the message header contains the IP addresses of all of servers involved in routing that email to you.
To find the first computer that originally sent the email, you’ll have to find the Received From that’s farthest DOWN. As you can see from the above image, the first one is from a computer called “aseem” with the IP address 72.204.154.191. Then it was routed to my ISP’s server at eastrmmtao104.cox.net and so on and so forth till it got to your email server.
The computer aseem is my personal home computer and that’s my public IP address for my house! I’ll go through Yahoo and Outlook before talking about tracking the location of that IP address.
Yahoo Mail Beta
1. Log into your account and open the email (if you’re using Yahoo Mail Beta with the new preview interface, make sure you double-click on the email so that it opens in a new tab)
2. At the top right, you’ll see there is a drop-down option where Standard Headeris selected by default.
3. Click on it and choose Full Header.
Again, you’ll see the same information as before, just in a different window:
Microsoft Outlook
1. Open the email in Outlook by double-clicking on it
2. Go to View at the top menu (the menu options for the email, not the main Outlook window) and choose Options.
You’ll get a dialog box where you can set the message options and at the bottom you’ll see the Internet Headers box. For some silly reason, the box is very small and you have to scroll a lot, so it’s best to simply copy and paste the text into Notepad to view it more easily.
Tracking the location of an IP address
Now that we have our originating IP address of 72.204.154.191, let’s find out where that is! You can do this by perform a location lookup on the IP address. My favorites are IP2Location and GeoBytes IP Locator.
GeoBytes gave me a big map of New Orleans, LA along with a bunch of other information about the location itself.
IP2Location also gave me the same information pretty much, including the ISP (Cox Communications). Of course, this is correct since I live in New Orleans!
If you want more information, you can do a WHOIS database search also. My favorite one is the ARIN WHOIS Database Search. This will give you information on who hosts that IP address and their registration information. You can always contact them to try and find more information on that particular IP address.
Have fun tracking down those emails! Questions, comments, or suggestions? Post a comment!
Tuesday, April 28, 2009
Download FREEv Windows XP with SP3 via HTTP or Torrent
Microsoft has released Windows XP with Service Pack 3 integrated or slipstreamed as full bootable setup installation CD in ISO image format to MSDN or TechNet Plus subscribers. As usual, the ISO images for many versions of Windows XP with SP3 CD or DVD ISO images have been leaked to Internet for free download. Here’s a collection of unmodified, untouched and original copy of official integrated Windows XP with SP3 slipstreamed ISO images as if when the CD images are downloaded from MSDN or TechNet Plus servers.
Almost all versions of integrated Windows XP with SP3 full install CD or DVD image in ISO formats are published. For example, Windows XP Home and Professional Edition, and both versions for retail and volume license (VL or VOL) customers, where retail version now does not require a product key to install, while VL version requires a volume licensing product key (VLK) to install. There are almost K, N, and KN releases, which is meant to customers in countries which enforce antitrust regulations. All integrated builds for Windows XP SP3 is of 32-bit (x86) versions.
Note: If you’re looking for standalone update package that will install Windows XP SP3 on your existing XP SP2 or SP1 system, check out the Windows XP SP3 direct download links from Microsoft Download Center or direct download links for Windows XP SP3 from WU server.
Windows XP Professional with Service Pack 3 (x86) Retail CD (English)
Direct Download via HTTP:en_windows_xp_professional_with_service_pack_3_x86_cd_x14-80428.iso
Download with BitTorrent Torrent Client:Windows_XP_Professional_with_Service_Pack_3_(x86)_Retail.4169906.TPB.torrent
Size: 589.14 MB
MD5: F424A52153E6E5ED4C0D44235CF545D5
SHA1: 1c735b38931bf57fb14ebd9a9ba253ceb443d459
ISO/CRC: FFFFFFFF
Monday, April 13, 2009
wanna know friends ip adress
If you know his ISP you will be able to tell which is his, and which isn't. Finding the IP is simple, just type in netstat -n.
The hostname will be like 890atlanticbb.net:3030
so when you type in netstat -n, look for the number ending in 3030.
The IP would be 12.125.46.2:3030
--------------------------------------------------------------------------------------
View the message header information and read from the top down. It should be the last IP in the header.
To use CMD and netstat, you need to have some type of connection with your friend. Not always the case. Email would be a good and easy first step. If not, initiate an IM Chat with your friend. This will help the netstat info.
Start>Run>cmd>
C:>ipconfig
I.P address.........................xxx..xxx...
chk for this.
Tuesday, January 13, 2009
Primitive Data Types
The Java programming language is strongly-typed, which means that all variables must first be declared before they can be used. This involves stating the variable's type and name, as you've already seen:Doing so tells your program that a field named "gear" exists, holds numerical data, and has an initial value of "1". A variable's data type determines the values it may contain, plus the operations that may be performed on it. In addition toint gear = 1;int
, the Java programming language supports seven otherprimitive data types. A primitive type is predefined by the language and is named by a reserved keyword. Primitive values do not share state with other primitive values. The eight primitive data types supported by the Java programming language are:In addition to the eight primitive data types listed above, the Java programming language also provides special support for character strings via thejava.lang.String class. Enclosing your character string within double quotes will automatically create a new
- byte: The
byte
data type is an 8-bit signed two's complement integer. It has a minimum value of -128 and a maximum value of 127 (inclusive). Thebyte
data type can be useful for saving memory in large arrays, where the memory savings actually matters. They can also be used in place ofint
where their limits help to clarify your code; the fact that a variable's range is limited can serve as a form of documentation.- short: The
short
data type is a 16-bit signed two's complement integer. It has a minimum value of -32,768 and a maximum value of 32,767 (inclusive). As withbyte
, the same guidelines apply: you can use ashort
to save memory in large arrays, in situations where the memory savings actually matters.- int: The
int
data type is a 32-bit signed two's complement integer. It has a minimum value of -2,147,483,648 and a maximum value of 2,147,483,647 (inclusive). For integral values, this data type is generally the default choice unless there is a reason (like the above) to choose something else. This data type will most likely be large enough for the numbers your program will use, but if you need a wider range of values, uselong
instead.- long: The
long
data type is a 64-bit signed two's complement integer. It has a minimum value of -9,223,372,036,854,775,808 and a maximum value of 9,223,372,036,854,775,807 (inclusive). Use this data type when you need a range of values wider than those provided byint
.- float: The
float
data type is a single-precision 32-bit IEEE 754 floating point. Its range of values is beyond the scope of this discussion, but is specified in section 4.2.3 of the Java Language Specification. As with the recommendations forbyte
andshort
, use afloat
(instead ofdouble
) if you need to save memory in large arrays of floating point numbers. This data type should never be used for precise values, such as currency. For that, you will need to use the java.math.BigDecimal class instead. Numbers and Strings coversBigDecimal
and other useful classes provided by the Java platform.- double: The
double
data type is a double-precision 64-bit IEEE 754 floating point. Its range of values is beyond the scope of this discussion, but is specified in section 4.2.3 of the Java Language Specification. For decimal values, this data type is generally the default choice. As mentioned above, this data type should never be used for precise values, such as currency.- boolean: The
boolean
data type has only two possible values:true
andfalse
. Use this data type for simple flags that track true/false conditions. This data type represents one bit of information, but its "size" isn't something that's precisely defined.- char: The
char
data type is a single 16-bit Unicode character. It has a minimum value of'\u0000'
(or 0) and a maximum value of'\uffff'
(or 65,535 inclusive).String
object; for example,String s = "this is a string";
.String
objects are immutable, which means that once created, their values cannot be changed. TheString
class is not technically a primitive data type, but considering the special support given to it by the language, you'll probably tend to think of it as such. You'll learn more about theString
class in Simple Data Objects
http://java.sun.com/docs/books/tutorial/java/nutsandbolts/datatypes.html
http://www.devshed.com/c/a/Java/Primitive-Data-Types-and-Basic-Language-Rules-for-Java/
Monday, January 12, 2009
MVC in JAVA
Model-View-Controller MVC
Brief Description
Several problems can arise when applications contain a mixture of data access code, business logic code, and presentation code. Such applications are difficult to maintain, because interdependencies between all of the components cause strong ripple effects whenever a change is made anywhere. High coupling makes classes difficult or impossible to reuse because they depend on so many other classes. Adding new data views often requires reimplementing or cutting and pasting business logic code, which then requires maintenance in multiple places. Data access code suffers from the same problem, being cut and pasted among business logic methods.
The Model-View-Controller design pattern solves these problems by decoupling data access, business logic, and data presentation and user interaction.
examples.
http://java.sun.com/blueprints/patterns/MVC-detailed.html