Techbits

Test post from Android app

2011-02-03T11:14:00.001-08:00

Hello Android

My First Blog Post

2010-08-04T11:25:00.001-07:00

Replace the subject line and body with your first blog post and hit send! Include pictures, an mp3, or anything else you want to share. It's just that simple.

Test
Varun

Posted via email from varunkumar-n's posterous

What do I blog here?

2010-03-18T10:58:00.000-07:00

TechBits was originally started as my technical blog. Later, I found it very difficult to manage multiple blogs and started to post technical articles onto my primary blog Varun's Scratchpad.TechBits is virtually dead and I am using it for testing purposes only.

See you at Varun's Scratchpad!!

-- Varun

Test Post from Word 2007!

2009-12-02T09:05:00.001-08:00

This is a test post to check the functionalities

Table	Test
	Value
		Value

-- Varun

Test

2009-09-30T11:10:00.000-07:00

Test entry!

2009-09-26T22:16:00.001-07:00

Trying out SideWiki. I m hoping that I can delete this later.

in reference to: Varun's ScratchPad (view on Google Sidewiki)

Flex Maven Setup!

2009-05-16T23:20:00.000-07:00

Here are some of the reference materials for Flex-Maven integration:

Maven - Eclipse (Nice)
http://www.sonatype.com/books/m2eclipse-book/reference/index.html

Maven Build (Nice)
http://www.sonatype.com/books/maven-book/reference/public-book.html
See : Chapter 20 article regarding flexmojos

Maven - Flex - BlazeDs - Spring
http://www.scribd.com/doc/6040972/Tutorial-setup-Flex-project-with-Maven
http://riadiscuss.jeffmaury.com/2008/09/maven-and-flex-builder-tutorial-part-i.html
http://riadiscuss.jeffmaury.com/2008/09/maven-and-flex-builder-tutorial-part-ii.html
http://riadiscuss.jeffmaury.com/2008/10/maven-and-flex-builder-tutorial-part.html

Flexmojo repo : http://repository.sonatype.org/content/groups/public

Maven Dependency FAQ
http://wiki.community.objectware.no/display/smidigtonull/Maven+Dependencies+and+Build+Stability+FAQ

--Varun

James Gosling's talk on Java

2009-02-18T07:39:00.000-08:00

James Gosling, Father of Java, gave a talk on "Java: Where we're heading" during the first day of Sun Tech Days 2009. He started off the talk mentioning how Java has changed the life of individuals and the various places where java is used. He expressed his joy that Java is moving towards the target of being everywhere.

The road we're on: Ubiquitous computing.

Some stats given by James

6 Million Java deveopers are there world-wide.
15 Million downloads of JRE every week
5 Million downloads of GlassFish App Server every week.
8 Million downloads of NetBeans every week.

He continuously stressed that he is just the architect of the tool but the actual players are the developers who use Java to change the world. He went on to develop a new acronym LOWA (Learn Once Work Anywhere) on the opportunities for the Java developers in the market.

Products

Then, he briefed about Glassfish 1.3 App Server and its features. Then, he moved on to the cool new features available in NetBeans 6.5. He is currently involved in the work on 'Real Time Java'. Mainly focussed on using Java for Real time control systems, robots, etc. When talking about the performance of Java, he explained that myth : Its interpreted and therefore slow, but the truth: Its been highly optimized for better performance. He also stressed on the importance of multithreading as the number of cores in Chips are getting increased. Then, he went on to talk about Java in mobile world -- mainly on Mobile Service Architecture. He gave an overview on JDK 7 and its new features. Finally, he moved on to JavaFx and expressed his satisfaction over that product. He also gave a demonstration on Java Fx application installed in his Windows based mobile.

Shall update the presentation slides and pics asap.

-- Varun

Java - .Net Interoperability

2009-01-31T03:23:00.000-08:00

A study on the various interoperability options available for Java and .Net. Putting it in easy wordings. For heaven's sake, do consult me if you are new to this and looking for one such solution.

Some of the options available are:

Using Web Services (SOAP based, REST based)

Web Services are services which use XML based SOAP for communication. This is an open standard. Most of the companies are adopting this approach.

Advantages:

Ease of use.
Can integrate anything with anything. [Open Standard]

Disadvantages:

Serializing the data to be transferred to XML and de-serializing them back [Consumes more time].
Transferring XML data over wire is costly than sending the raw data.

If we need high performance systems, this is not the best option.

Binary Interoperability

Binary interoperability methods take objects from one platform, serialize them into a binary stream, send them across the network and then de-serialize the same data on the other platform. Because both parties agree on the binary format to use, the serialization ensures that the binary data is successfully mapped to local data types for each platform. .NET Remoting is a protocol available for this (more like a specification). There are lots of third party implementations on top of this. Famous being, JNBridge Pro

Advantages:

Faster communication.
Shared access of objects across platforms.

Disadvantages:

All tools are costly
.NET Remoting is not a recognized standard
Tight coupling between client and server

CORBA based interoperability

Binary interoperability using the standards of CORBA (Common Object Request Broker Architecture). Java supports RMI using CORBA based protocol IIOP. But, .Net doesn’t support CORBA out of the box. Found a tool called IIOP.Net which does the folowing:

Using Java RMI support, we can create IDL (Interface Definition Language), a common CORBA specific type definition.
Create CLS (.Net Specific assemblies) from these IDL files using IIOP.Net's IDLToCLSCompiler. It will generate .dll file
Add a reference to that dll file from .Net and access those classes as proxy.
Use IIOPChannel to communicate with the Java remote objects.

Advantages: Same as above.

Disadvantages:

CORBA way would be maintenance nightmare
Can't rely fully on the underlying channels
System gets complex

References
DevX article on interoperability options
IIOP.Net
JNBridge Pro

--Varun

Online Photo editors - Really kewl!

2008-11-22T02:26:00.001-08:00

http://mashable.com/2008/11/13/online-image-editors-2/

Google's Search Engine Optimization Guide!

2008-11-14T05:18:00.001-08:00

http://www.google.com/webmasters/docs/search-engine-optimization-starter-guide.pdf

New - Vimperator, bti!

2008-10-31T07:25:00.001-07:00

Crazy about Vim?
If you are really crazy about using Vim, here is a way for u to turn ur Firefox into a Vim like environment.
http://vimperator.org/trac/wiki/Vimperator

Twitts from the Command Line - http://kroah.com/log/linux/bti.html

Grady Booch's talk on "The Beauty of Software"

2008-10-22T21:11:00.000-07:00

http://video.yahoo.com/watch/577305/2839970

Interesting sites

2008-10-07T02:43:00.001-07:00

http://media-convert.com/ - online converter

http://yearbookyourself.com/ - Morph to older pic
http://www.sensibleunits.com/ - visualize metrics
http://www.rssbandit.org/ - desktop rss aggregator
http://www.readatwork.com/ - Virtual windows environment which displays poems as charts, presentations, etc
http://omnisio.com/create/presentation - syncing video with presentation slides
http://gpl.internetconnection.net/vi/ - online vi editor
www.stopforwarding.us
www.ning.com - create social network
http://page2rss.com/

YourCodeSucksException

2008-09-29T21:44:00.001-07:00

http://sleep.dashnine.org/docs/api/sleep/error/YourCodeSucksException.html

Y no 'break' in 'if'?

2008-09-29T21:30:00.000-07:00

Placeholder post for understanding why there is no 'break' statement for 'if' in programming languages. Experts opine.

AJAX Test post

2008-09-09T22:58:00.000-07:00

Mounting Reiser partition in Windows!

2008-01-29T01:56:00.001-08:00

http://www.p-nand-q.com/download/rfstool/overview.html

Mounting Ext2 partition in linux!

2008-01-29T01:39:00.001-08:00

http://lifehacker.com/software/ubuntu/download-of-the-day-ext2-installable-file-system-windows-204777.php

Using a single data store for Windows and Linux

2008-01-29T01:30:00.001-08:00

Sometimes we may need to share data between dual OS we have. we might have used network services (like samba server) to accomplish the task. Click here to check out this simpler way of sharing the data store. :)

ScreenCasting

2007-12-02T21:19:00.000-08:00

Here is an excellent comparison of some of the leading screencasting:online video sharing sites.
Screencasting compared

How to change title in IE?

2007-11-18T03:04:00.001-08:00

Follow the steps to append some text to your IE:
1. Open up Regedit (Start>Run>Regedit).
2. Navigate to this string: HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
3. Create a new string value (Right-click "Main" key folder, select New>String Value).
4. Rename the value "Window Title" without the quotes (Right-click value, choose Rename).
5. Right-click "Window Title" and choose Modify. In the value data section, type your title of choice. Mine says "Varun's last experiment at college!"
6. Now, launch a new instance of IE and enjoy the changes!

About "about:"!

2007-11-16T23:00:00.000-08:00

You might have noticed in most of the browsers that about:blank is the default home page. Have you ever wondered what this page is? Its a blank html page created by the browser. Read this article to know more about "about:".

"about:URI" is a protocol used by browsers to maintain its internal pages. The most common URI used is "blank". The implementation of this protocol is upto the browser. Each browser has its own set of URIs. Some URIs are helpful in knowing some info about the broswer itself.

"about:" - Displays version info in Mozilla firefox, Opera, Konqueror
"about:plugins" - Shows the filename, MIME type, description, suffix, and status of all installed plug-ins in Mozilla firefox
"about:help" - Displays help file in Opera.

For more, read http://en.wikipedia.org/wiki/About:_URI_scheme

Comet - the next stage of AJAX!

2007-08-13T02:12:00.001-07:00

Comet is a software concept that enables web servers to send data to the client program (normally a web browser) without having any need for the client to request it. It allows creation of event-driven web applications which are hosted in the browser.

A style of data transmission that is neither traditional nor Ajax

Reference :
http://www.irishdev.com/NewsArticle.aspx?id=2166
http://en.wikipedia.org/wiki/Comet_(programming)

Programming online!

2007-08-10T10:28:00.001-07:00

I came across this excellent site.
its an online IDE for various computer languages including Pascal, Basic, C, Perl, Js, etc....
u can write , compile n run your programs here...its pretty kewl...try this
http://www.codeide.com/ and enjoy programming...

Efficient sorting!

2007-08-06T12:09:00.001-07:00

There is a sorting algorithm which sorts in O(n) : Pancake Sort

Also, Sorting networks is another algo which sorts in O(logn)

Data Structures Question

2007-08-02T09:49:00.001-07:00

Construct a doubly linked list using a single pointer in each node.

This can be done using a linked list called XOR linked list..

Each node stores the XOR of the address for previous and the address for next in one field.

refer this :

http://en.wikipedia.org/wiki/XOR_linked_list

Enabling Remote Desktop Remotely

2007-07-26T11:21:00.001-07:00

Lots of sites on the internet discuss how to enable remote desktop in Windows XP and Windows 2003 Server, but the majority of them require you to have physical access to the computer first. So how do you enable remote desktop when you do not have physical access to the computer. It is all to do with the registry!

Make a network connection to the remote computer to ensure that you have administrative access to the machine (i.e. \\computer\c$). This will prompt for a username and password of the administrator. Enter the correct details.
Start the registry editor regedit.exe (and not the older application regedt32.exe if it exists - it does not in later releases of Windows)
Choose File, Connect Network Registry
Enter the computer name as above.
Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server for the registry settings for the remote computer (take care not to select your own desktop)
Double-click fDenyTSConnections.
Change the value of this setting to 0 to enable Remote Desktop or 1 to disable it, and click OK.
If your remote computer has multiple network cards and you want to ensure that Remote Desktop is operating only on a selected card then navigate to the following registry location: (as above)\WinStations\RDP-Tcp and note the LanAdapter value. If this is 0 Remote Desktop operates on all networks, and if this is another number then it operates only on the network as identified in the (as first)\lanatable registry key
Disconnect the remote computer from the registry editor using File, Disconnect Network Registry, and selecting the correct remote computer in the list.
Finally, one of two options. Option A is quicker:
1. Connect with Manage Computer to the remote PC (right-click "My Computer", choose "manage", right-click "Computer Management (Local)" and "Connect to another computer". Enter the name of the remote computer). Then from the Services node, start the Remote Desktop Helper service. This will cause Remote Desktop to start and read the relevant registry key. This is particularly helpful because it allows one to get Remote Desktop working without even restarting the machine.
2. If this fails, then you can always restart the computer remotely.

Google Talk and Open Communications!

2007-04-22T03:43:00.001-07:00

Guys! you might have used GTalk as ur chat client for gchat services....

some mite have used other services like meebo , gtalklife, so on....
have u ever wondered how this is possible....other clients getting into gchat services....

yes! GTalk uses a open communication standard called XMPP using which any client can connect to gchat services....

learn more here

Mounting linux partitions!

2007-04-22T02:09:00.000-07:00

is it possible to mount linux partitions on windows?? - Yes! its possible...check out here