Techno Trends

How to find min of a stack in o(n)

noreply@blogger.com (Unknown) — Sun, 18 Sep 2011 04:23:00 -0700

Original stack 3,4,6,2,8,1,9
Maintain a stack 3,3,3,2,2,1,1

Most Popular Free Android Apps

noreply@blogger.com (Tech Talk) — Mon, 11 Jul 2011 11:00:00 -0700

Android market is booming with the popularity of the Android operated phones, applications supported by it obviously takes the supreme stage for debate. Google Inc supported online Android market already has scads of applications for Android phones and users just need to choose the best among them.Here are few mind blowing apps

1.Google Sky Map:

Google Sky Map turns your Android-powered device into a window on the night sky.
Google Sky Map turns your Android-powered mobile phone into a window on the night sky.
Find us elsewhere:
http://www.google.com/sky/skymap
http://groups.google.com/group/google-sky-map
http://twitter.com/googleskymap
Keywords: planetarium, astronomy, skymap

Sky Map Screenshot
Sky Map Screenshot
Sky Map Screenshot
Sky Map Screenshot
Sky Map Screenshot
Sky Map Screenshot

Features:

Figure out what you're looking at
Point your phone at the sky, and Google Sky Map will show the stars, planets, constellations, and more to help you identify the celestial objects in view. You can also browse the skies in manual mode.

Search the skies
Search the night sky for your favorite planet, Messier object, and more. Then move the phone in the direction of the arrow to find it in the sky around you.

Supported phones

All Android phones running Android 1.6 or higher.

Install the apps

Agile Methodology

noreply@blogger.com (Tech Talk) — Wed, 6 Jul 2011 05:23:00 -0700

What Is Agile?
Agile methodology is an approach to project management, typically used in software development. It helps teams respond to the unpredictability of building software through incremental, iterative work cadences, known as sprints. But before discussing agile methodologies further, itÂ’s best to first turn to the methodology that inspired it: waterfall, or traditional sequential development.

Where Did Agile Come From?
In 1970, Dr. Winston Royce presented a paper entitled Â“Managing the Development of Large Software Systems,Â” which outlined his ideas on sequential development. In essence, his presentation asserted that a project could be developed much like an automobile on an assembly line, in which each piece is added in sequential phases. This means that every phase of the project must be completed before the next phase can begin. Thus, developers first gather all of a projectÂ’s requirements, then complete all of its architecture and design, then write all of the code, and so on. There is little, if any, communication between the specialized groups that complete each phase of work.

ItÂ’s easy to see how this development agile methodology is far from optimized. First of all, it assumes that every requirement of the project can be identified before any design or coding occurs. Put another way, do you think you could tell a team of developers everything that needed to be in a piece of software before it was up and running? Or would it be easier to describe your vision to the team if you could react to functional software? Many software developers have learned the answer to that question the hard way: At the end of a project, a team might have built the software it was asked to build, but, in the time it took to create, business realities have changed so dramatically that the product is irrelevant. In that scenario, a company has spent time and money to create software that no one wants. CouldnÂ’t it have been possible to ensure the end product would still be relevant before it was actually finished?

Why Agile?
Agile development methodology attempts to provide many opportunities to assess the direction of a project throughout the development lifecycle. This is achieved through regular cadences of work, known as sprints or iterations, at the end of which teams must present a shippable increment of work. Thus by focusing on the repetition of abbreviated work cycles as well as the functional product they yield, agile methodology could be described as Â“iterativeÂ” and Â“incremental.Â” In waterfall, development teams only have one chance to get each aspect of a project right. In an agile paradigm, every aspect of development Â— requirements, design, etc. Â— is continually revisited throughout the lifecycle. When a team stops and re-evaluates the direction of a project every two weeks, thereÂ’s always time to steer it in another direction.

The results of this Â“inspect-and-adaptÂ” approach to development greatly reduce both development costs and time to market. Because teams can gather requirements at the same time theyÂ’re gathering requirements, the phenomenon known as Â“analysis paralysisÂ” canÂ’t really impede a team from making progress. And because a teamÂ’s work cycle is limited to two weeks, it gives stakeholders recurring opportunities to calibrate releases for success in the real world. In essence, it could be said that the agile development methodology helps companies build the right product. Instead of committing to market a piece of software that hasnÂ’t even been written yet, agile empowers teams to optimize their release as itÂ’s developed, to be as competitive as possible in the marketplace. In the end, a development agile methodology that preserves a productÂ’s critical market relevance and ensures a teamÂ’s work doesnÂ’t wind up on a shelf, never released, is an attractive option for stakeholders and developers alike.

For more details visit http://agilemethodology.org/

2011

noreply@blogger.com (Tech Talk) — Thu, 26 May 2011 04:41:00 -0700

This free script provided by

JavaScript
Kit

Calender Current Month

noreply@blogger.com (Tech Talk) — Thu, 26 May 2011 04:31:00 -0700

Canoo Webtest Tutorial

noreply@blogger.com (Tech Talk) — Sat, 1 Jan 2011 10:43:00 -0800

What is Canoo Webtest?

If you are looking for a open source test automation tool then Canoo Webtest is one of them. It's simple,fast and easy to setup . If you are looking for test automation for your project this is definitely one of the tool worth trying.

System requirement

Java 1.5 or higher.
Ant 1.7.0 or higher.
Eclipse to create test cases (optional).
Version Control (optional).

Installation

Download latest build http://webtest.canoo.com/webtest/build.zip.

Sanity check

JAVA_HOME is set properly
MAVEN_HOME is set properly

Set up Canoo Webtest

Extract the build jar to a folder (D:/Canoo)
Configure System path (PATH=%PATH%;D:/Canoo/build/bin)

Now open a command prompt and type webtest . It should looks like below

Create a Canoo Test Project

Now your system is ready for canoo test and start writing canoo tests . Canoo provide utility to create a Canoo project with all the required skeleton.

Open command prompt and go to your Canoo home folder (D:\Canoo) and type :

webtest -f build/webtest.xml wt.createProject

Give a name for your Canoo project .

This command will create a Canoo project with the required skeleton and also provide few default test sets for your learning .

Running Canoo Test cases

Now Canoo project is ready to run . Just go command prompt and go to your Canoo project home page and type:

webtest

You should see something like :

Test Automation

noreply@blogger.com (Tech Talk) — Fri, 31 Dec 2010 04:12:00 -0800

What Is Test Automation?

Test automation is the use of software to control the execution of tests, the comparison of actual outcomes to predicted outcomes, the setting up of test preconditions, and other test control and test reporting functions.Commonly, test automation involves automating a manual process already in place that uses a formalized testing process.

Benefits of Test Automation

Reduce Manual Effort : Can be reused on multiple deployed and releases.
Seamless Integration with POM tools.
Can be scheduled to run on Particular time
Test report is much more than pass/fail data .

Maunual Testing VS Test Automation

Computers have taken over many functions in our society that were once "manual" operations. Factories use computers to control manufacturing equipment and have cut costs enormously. Electronics manufacturing use computers to test everything from microelectronics to circuit card assemblies. Since automation has been so successful in so many areas, does it make sense that a software program should be used to test another software program? This is referred to as "automated software testing" for the remainder of this article.
Software testing using an automatic test program will generally avoid the errors that humans make when they get tired after multiple repetitions. The test program won't skip any tests by mistake. The test program can also record the results of the test accurately. The results can be automatically fed into a database that may provide useful statistics on how well the software development process is going. On the other hand, software that is tested manually will be tested with a randomness that helps find bugs in more varied situations. Since a software program usually won't vary each time it is run, it may not find some bugs that manual testing will. Automated software testing is never a complete substitute for manual testing.
There has been plenty of debate about the usefulness of automatic software testing. Some companies are quite satisfied with the developer testing his/her own work. Testing your own work is generally thought of as risky since you'll be likely to overlook bugs that someone not so close to the code (and not so emotionally attached to it) will see easily. As soon as the developer says it's done they ship it. The other extreme is the company that has its own automatic software test group as well as a group that tests the software manually. Just because we have computers does that mean that it is cost effective to write tests to test software and then spend time and resources to maintain them? The answer is both yes and no. When properly implemented, automated software test can save a lot of time, time that will be needed as the software approaches shipping.

Approaches to test automation

GUI Testing :
GUI testing is a process to test application's user interface and to detect if application is functionally correct. GUI testing involves carrying set of tasks and comparing the result of same with the expected output and ability to repeat same set of tasks multiple times with different data input and same level of accuracy. GUI Testing includes how the application handles keyboard and mouse events, how different GUI components like menubars, toolbars, dialogs, buttons, edit fields, list controls, images etc. reacts to user input and whether or not it performs in the desired manner. Implementing GUI testing for your application early in the software development cycle speeds up development, improves quality and reduces risks towards the end of the cycle. GUI Testing can be performed both manually with a human tester or could be performed automatically with use of a software program.
Every software organization tests its softwares, still the end product always have some issues left. Testing team tries their best to find all the bugs before release of the software but still there are issues left in the product and they often re-appear as new modules are added to the software. Even the best of manual testing process struggle to deliver an effective, efficient, accurate and increased test coverage.
Manual testing is often error prone and there are chances of most of the test scenarios left out. Also with the project in development phase where source code changes appear every other day, manually keeping up with the pace to test each and every feature is a difficult task. More often then not the newly added features would bring regression along with them, so to accurately cover all the old test cases manually is very time consuming and error prone.
Automated GUI Testing is use of software program to detect if your desktop application is functionally correct. Automated GUI Testing includes automating manual testing tasks which are mostly time consuming and error prone. Automated GUI Testing is a more accurate, efficient, reliable and cost effective replacement to manual testing. Automated GUI Testing involves carrying set of tasks automatically and comparing the result of same with the expected output and ability to repeat same set of tasks multiple times with different data input and same level of accuracy. Implementing GUI Testing for your application early in the software development cycle speeds up development, improves quality and reduces risks towards the end of the cycle.
Automated GUI Testing is a solution to all the issues raised with Manual GUI Testing. An Automated GUI Testing tool can playback all the recorded set of tasks, compare the results of execution with the expected behavior and report success or failure to the test engineers. Once the GUI tests are created they can easily be repeated for multiple number of times with different data sets and can be extended to cover additional features at a later time.
Most of the software organizations consider GUI Testing as critical to their functional testing process and there are many things which should be considered before selecting an Automated GUI Testing tool. A company can make great strides using functional test automation. The important benefits include, higher test coverage levels, greater reliability, shorted test cycles, ability to do multi user testing at no extra cost, all resulting in increased levels of confidence in the software.

Code Driven Testing:

A growing trend in software development is the use of testing frameworks such as the xUnit frameworks (for example, JUnit and NUnit) that allow the execution of unit tests to determine whether various sections of the code are acting as expected under various circumstances. Test cases describe tests that need to be run on the program to verify that the program runs as expected.
Code driven test automation is a key feature of Agile software development, where it is known as Test-driven development (TDD). Unit tests are written to define the functionality before the code is written. Only when all tests pass is the code considered complete. Proponents argue that it produces software that is both more reliable and less costly than code that is tested by manual exploration. It is considered more reliable because the code coverage is better, and because it is run constantly during development rather than once at the end of a waterfall development cycle. The developer discovers defects immediately upon making a change, when it is least expensive to fix. Finally, code refactoring is safer; transforming the code into a simpler form with less code duplication, but equivalent behavior, is much less likely to introduce new defects.

How to install FileZilla in Ubuntu?

noreply@blogger.com (Unknown) — Thu, 22 Jan 2009 09:31:00 -0800

FileZilla Client is a fast and reliable cross-platform FTP, FTPS and SFTP client with lots of useful features and an intuitive graphical user interface.
Features

Among others, the features of FileZilla include the following:

* Easy to use
* Supports FTP, FTP over SSL/TLS (FTPS) and SSH File Transfer Protocol (SFTP)
* Cross-platform. Runs on Windows, Linux, *BSD, Mac OS X and more
* IPv6 support
* Available in many languages
* Supports resume and transfer of large files >4GB
* Powerful Site Manager and transfer queue
* Bookmarks
* Drag & drop support
* Configurable transfer speed limits
* Filename filters
* Network configuration wizard
* Remote file editing
* Keep-alive
* HTTP/1.1, SOCKS5 and FTP-Proxy support
* Logging to file

To install Follow these steps :

1. Download the FileZile software FileZilla_3.2.0_i586-linux-gnu.tar.bz2 for AMD

Or
Download filezilla_3.0.11.1-0ubuntu1_amd64.deb for AMD

2. Use this command to extract data.tar.gz file:
ar vx filezilla_3.0.11.1-0ubuntu1_amd64.deb

3. Then use this command to extract bin file :
tar -xzvf data.tar.gz

4. Create a menu item to add the application to menu:

sudo gedit /usr/share/applications/filezilla.desktop

Add the following:

[Desktop Entry]
Encoding=UTF-8
Name=FileZilla
Comment=FTP Client
Exec=/opt/FileZilla3/bin/filezilla
Icon=/opt/FileZilla3/share/pixmaps/filezilla.png
Terminal=false
Type=Application
Categories=Application;Network;
StartupNotify=true

5. Run FileZila Now :

Install VLC player in UBUNTU

noreply@blogger.com (Unknown) — Wed, 21 Jan 2009 07:15:00 -0800

VLC media player - the cross-platform media player and streaming server

VLC media player is a highly portable multimedia player for various audio and video formats (MPEG-1, MPEG-2, MPEG-4, DivX, mp3, ogg, ...) as well as DVDs, VCDs, and various streaming protocols. It can also be used as a server to stream in unicast or multicast in IPv4 or IPv6 on a high-bandwidth network.

To Install VLC in Ubuntu just run these commands:
1. sudo apt-get update
2. sudo apt-get install vlc vlc-plugin-esd

Now you are ready with VLC player, to run it go to Applications—>Sound&Video—>VLC Media Player.

ROR starter Guide .

noreply@blogger.com (Unknown) — Thu, 14 Feb 2008 09:45:00 -0800

For last couple of days i was thinking of writing a Tutorial on Ruby on Rails , but because of my time constraint i could not manage to make one.
This article will help you to start with ROR.
1. Install ROR from http://rubyonrails.org.
2. Start building you application from the available tutorial from http://rubyonrailstutorials.com.

Working on my own tutorial, still then get some expertise :P.

ROR or Java?

noreply@blogger.com (Unknown) — Sat, 15 Dec 2007 06:52:00 -0800

You are ready with your idea. What next ?
To decide Which Platform/technology to use comes with many parameters.
Here are few parameters i had to consider to decide whether to use ROR or Java ..
1. Cost : Money was the initial constraint for us because we decided not go for an investor and on this ROR is the clear winner over java ( With My Investigation).
2. Scalability : As we got a dream idea and we expected it to be taking shapes and size over time scalability makes one decisive factor to decide for java.
3. Expertise : The core point of the inception of the idea for us was our technical expertise and we are a java expert having experience on delivery large scale java based project makes us more comfortable for java. It's a fact that ROR can be learned very easily ,but when we talk about scalability and high level security java is a clear winner.

The verdict for us was java for being winner on the two decisive factors.
But if not tomorrow i am sure with coming months/years with so much interest and Ruby's strength will make ROR the winner on the fight .

Coming Next for my Blogs is
1. Political implication of Gujarat election on India.
2. ROR starter Guide .
Please visit here to know more on ROR.

Get Rid Of Out of Memory problem

noreply@blogger.com (Unknown) — Sun, 2 Dec 2007 07:32:00 -0800

One of Key challenges i faced on my last project is to get rid of Out of memory problem. Here are the few things one can do to avoid the problem :
1. Increase the Heap size on Application server. ( This solution is not permanent one and for a large application this will not result any significance improvement )

2. On your code make sure that all the Object destroyed after use. Please read the detail article from How to Handle Java Finalization's Memory-Retention Issues.

Wish this article helped you to get rid of memory Problem ,
Sailen

How to Stay secure on Internet

noreply@blogger.com (Unknown) — Sun, 2 Dec 2007 07:04:00 -0800

With growing concern of Internet Fraud and Phishing makes people scared about making financial transaction on internet. Here are the Few Things will ensure you of secure transaction:
1. To get rid of phishing , don't use any links received by emails or got from an untrusted website. For banking transaction type the URL to make sure that you are visiting the correct site.
2. Before typing any personal or financial data Check if any Malicious software is running or not . Use Windows malicious software removal tool to remove the Malicious software , Click Here For Details.

3. Once finished clear all the data from your computer. For Firefox Tools->Clear Private Data & for IE Tools->Internet Options and click on Delete cookies,Delete Files and Clear History .

Njoy Secure Browsing,
Sailen

Techno Trends

How to find min of a stack in o(n)

Most Popular Free Android Apps

Sky Map Screenshot

Sky Map Screenshot

Sky Map Screenshot

Agile Methodology

2011

Calender Current Month

Canoo Webtest Tutorial

Test Automation

How to install FileZilla in Ubuntu?

Install VLC player in UBUNTU

ROR starter Guide .

ROR or Java?

Get Rid Of Out of Memory problem

How to Stay secure on Internet