JBasics

1000+ Twitter followers....

2010-12-15T04:39:00.001-08:00

Waiting for 1000 followers : currently its 969 only

2010-12-14T00:11:00.000-08:00

LinkedIn under maintenance...

2010-12-11T20:53:00.000-08:00

From the House of Analytics

2010-12-02T07:02:00.000-08:00

An Encounter With LinkedIn Errors

2010-12-01T08:07:00.000-08:00

Problem in connecting Twitter A/c with Yahoo

2010-11-21T05:51:00.000-08:00

This time it was GAE server!

2010-11-02T07:43:00.000-07:00

Error page appeared while browsing Google chrome extensions gallery.

2010-11-01T21:56:00.000-07:00

Have you ever seen an error page while browsing Google chrome extensions gallery?

Twitter may be over capacity or experiencing a momentary hiccup.

2010-10-23T07:15:00.000-07:00

Issue with Google Chrome

2010-10-22T08:19:00.000-07:00

Google chrome is awesome. There is no doubt about it. I am a huge fan of this browser. However I am little worried about chrome taking screenshot of my logged-in pages.

Twitter also went down

2010-10-22T08:09:00.000-07:00

Not only LinkedIn but twitter also went down. Looks like there are issues with managing unlimited loads.

LinkedIn network went down

2010-10-22T08:03:00.000-07:00

LinkedIn network went down. I encountered this 2-3 times today.

IBM Buys Financial Governance Software Company Clarity Systems

2010-10-21T21:52:00.000-07:00

IBM Buys Financial Governance Software Company Clarity Systems: "IBM is announcing the acquisition of yet another company today: Toronto-based financial governance software company Clarity Systems."

GROU.PS Buys Social Project From MTV Networks

2010-10-13T22:40:00.000-07:00

GROU.PS Buys Social Project From MTV Networks:

"DIY social network platform GROU.PS has just announced that it has acquired Social Project from MTV Networks."

IBM Buys Information Management Software Company PSS Systems

2010-10-13T22:36:00.000-07:00

IBM Buys Information Management Software Company PSS Systems:

"IBM is continuing its shopping spree today with the acquisition of PSS Systems, a company that builds an information management software suite."

Local Restaurants

2010-10-13T07:36:00.001-07:00

Local restaurants are just a click away (US only for now).
https://chrome.google.com/extensions/detail/njgbinbhhlnfdndnoemapaldgdddcmii

Car/Taxi Rentals

2010-10-13T07:35:00.000-07:00

Find Cars or Taxis on rent in your nearby places (US only for now).

https://chrome.google.com/extensions/detail/mhbjghnlkpjeiefjjeibaocngbblgaod

Page Info

2010-10-09T00:39:00.000-07:00

Context menu for cached snapshot of page, similar pages, backward links etc

Context menu for finding :

>> basic information about the current page
>> Google's cache of the current page
>> web pages that are similar to the current page
>> web pages that link to the current page
>> web pages from the current site

Install from here :
https://chrome.google.com/extensions/detail/objjmokkpomkpcdgcpobipgpncfpmgdc

Twitter Revamps Search Engine - PCWorld

2010-10-08T05:14:00.000-07:00

Twitter Revamps Search Engine - PCWorld: "The engineering team in charge of the project decided to do an extreme makeover of the search engine using a different technology: the open-source, text search engine Lucene, which is written in Java"

Spring to Java EE – A Migration Experience | OcpSoft

2010-10-07T21:37:00.000-07:00

Spring to Java EE – A Migration Experience | OcpSoft: "One of the greatest features of Java EE APIs is the ability to break application code into separate reusable JAR files – where each individual JAR contributes configuration and code to the system they are included in; for instance, you might run multiple applications for your business, but each one must have the same data access providers. You’d create a shared domain-model JAR file and include it in each application. All the configuration would be contained in that JAR, and would be done using the same set of configuration files, placed in the JAR’s META-INF directory:"

Search Using

2010-10-05T01:44:00.001-07:00

Search Using Google, Yahoo, Bing, Wikipedia, Answers.com etc

1. Select text from any web page
2. Right click on the selected text and
3. Navigate to Search Using your favorite search engine.

https://chrome.google.com/extensions/detail/gbdllocefpbichjccgjfjkdodphhgfji

Send This

2010-10-05T01:43:00.001-07:00

This extension adds context menus for sending selected text/image/audio/video links etc.

https://chrome.google.com/extensions/detail/omdliojdkddaimpjiahjnfmlnhlgghco

Google TV

2010-10-05T01:38:00.000-07:00

Google TV

"The web is now a channel With Google Chrome and Adobe Flash Player 10.1, Google TV lets you access everything on the web. Watch your favorite web videos, view photos, play games, check fantasy scores, chat with friends, and do everything else you're accustomed to doing online. Plus, the world's best websites are now being perfected for television -- check out our Spotlight gallery for examples."

ilovepopula - Techcrunch AOL Song - SoundCloud

2010-09-29T08:20:00.000-07:00

ilovepopula - Techcrunch AOL Song - SoundCloud

Google Code Blog: New OAuth support for Google Apps APIs

2010-09-27T21:20:00.000-07:00

Google Code Blog: New OAuth support for Google Apps APIs:

"Google Apps is designed to provide a secure and reliable platform for your data. Until today, Google Apps administrators had to sign requests for calls to Google Apps APIs using their username and password (this is called ClientLogin Authorization)."

Javascript Populars!

2010-09-26T06:46:00.001-07:00

https://chrome.google.com/extensions/detail/likekminkdlnhamphdckjjjlfilleoao

One click access to popular JavaScript frameworks/plugins!

Good News for GWT Developers: Google Makes Instantiations Available for Free - TheServerSide.com

2010-09-20T22:01:00.000-07:00

Good News for GWT Developers: Google Makes Instantiations Available for Free - TheServerSide.com:

"This is some seriously good news for both GWT developers, and more to the point, junior developers who were a little trepid about coding GWT user interfaces."

Web Development Expert!

2010-09-19T21:56:00.000-07:00

Websites to follow if you are into Web Development.

Nice addition to chrome extensions gallery.

Here is the link to install this add-on:

https://chrome.google.com/extensions/detail/ikmodglecnfjjbhodpjajkmkmgackpbj

DealsGhost : Check for flight discount and offers

2010-09-16T01:27:00.000-07:00

DealsGhost : Check for flight discount and offers

Domestic Flights:
http://www.dealsghost.com/flight-discounts-offers.html

International Flights:
http://www.dealsghost.com/international-flight-discounts-offers.html

Check before you book next time.

IBM Buys OpenPages To Spice Up Its Business Analytics Portfolio

2010-09-15T21:44:00.000-07:00

IBM Buys OpenPages To Spice Up Its Business Analytics Portfolio:

"IBM has agreed to purchase OpenPages, a privately-held software company based in Waltham, MA that helps companies identify and manage risk and compliance activities across the enterprise through a single management system."

Quiksee Acquired by Google

2010-09-14T06:26:00.000-07:00

Quiksee Acquired by Google:

"The Israeli startup Quiksee confirmed that it has been acquired by Google and its employees will join the Google Geo team. 'Quiksee is an Internet start-up company that focuses on creating location based interactive videos. Our vision is to fill the world maps with Quiksee tours that will let people virtually travel across the planet as if they were there,'"

Will it play in App Engine - Google App Engine for Java | Google Groups

2010-09-14T04:22:00.000-07:00

Will it play in App Engine - Google App Engine for Java | Google Groups:

"While they do not support the entirety of the Java EE specification, many of its individual components are supported. These include:
Java Data Objects (JDO) -- notes
Java Persistence API (JPA) -- notes *
Java Server Faces (JSF) 1.1 - 2.0 **
Java Server Pages (JSP) JSTL ***
Java Servlet API 2.4 -- notes
JavaBeans™ Activation Framework (JAF)
Java Architecture for XML Binding (JAXB)
JavaMail -- notes
XML processing APIs including DOM, SAX, and XSLT"

Popular Apache Projects!

2010-09-12T09:51:00.001-07:00

Popular apache projects are just one click away.
https://chrome.google.com/extensions/detail/dlhgmhpebmofmmobhekcghcchomegbjj

---------------------------------------------------------------------------------------------------------------------
Other extensions that you may find interesting and useful:

News You Like!
https://chrome.google.com/extensions/detail/mhhfpkohhndikjdifdgdeckmlgpohkoo

Desktop Shortcut!
https://chrome.google.com/extensions/detail/olmpkeafdhhnpadklgofgdpomnobkhcl

Hindi Samachar!
https://chrome.google.com/extensions/detail/ijjidjckjgncffaabnfbbcadhlkfgkde

Chrome Connect!
https://chrome.google.com/extensions/detail/gaigbnfdhehflkldamepafiokmgcdgoh

TechCrunch Updates!
https://chrome.google.com/extensions/detail/bfaiglbmoeejgppojldfpnhnnfhipilb

Google Updates!
https://chrome.google.com/extensions/detail/hgpmpdianeaklbogghlencmfooiohofn

Quick Access!
https://chrome.google.com/extensions/detail/kfnecblapggejbhocfaglhhlejjnpjfj

LinkedIn Recruitment Tool!
https://chrome.google.com/extensions/detail/dojgaeepekolngkomjdphafijmieobam

What's New!
https://chrome.google.com/extensions/detail/libpcmhepicbgngiakhglhkfdogpbmma

Search: now faster than the speed of type

2010-09-09T01:35:00.000-07:00

Official Google Blog: Search: now faster than the speed of type:

"Testing has shown that Google Instant saves the average searcher two to five seconds per search. That may not seem like a lot at first, but it adds up. With Google Instant, we estimate that we’ll save our users 11 hours with each passing second!"

Google Buys SocialDeck

2010-08-31T21:48:00.000-07:00

Google Buys SocialDeck:

"Google acquired yet another social gaming company: SocialDeck. The start-up had an interesting idea: creating a platform for playing games on any device."

Speed Tracer

2010-08-29T23:56:00.000-07:00

Speed Tracer - Google Web Toolkit - Google Code:

"Speed Tracer is a tool to help you identify and fix performance problems in your web applications. It visualizes metrics that are taken from low level instrumentation points inside of the browser and analyzes them as your application runs. Speed Tracer is available as a Chrome extension and works on all platforms where extensions are currently supported (Windows and Linux).
Using Speed Tracer you are able to get a better picture of where time is being spent in your application. This includes problems caused by JavaScript parsing and execution, layout, CSS style recalculation and selector matching, DOM event handling, network resource loading, timer fires, XMLHttpRequest callbacks, painting, and more."

SoapUI : Transferring Property Values | Functional Testing

2010-08-27T00:25:00.000-07:00

Transferring Property Values | Functional Testing:

Property Transfer TestSteps are used to transfer properties between TestSteps and their containing TestCase, TestSuite and Project. They are extremely useful in a number of situations, especially when properties containing XML are involved, for example when you need to

1. Extracting a value from an XML message, for example a sessionID from a SOAP Response
2. Write a value into an XML message, for example a saved sessionID or authentication data
3. Transfer complex XML content between properties
4. etc

Official Google Blog: Call phones from Gmail

2010-08-26T04:56:00.000-07:00

Official Google Blog: Call phones from Gmail: "Gmail voice and video chat makes it easy to stay in touch with friends and family using your computer’s microphone and speakers. But until now, this required both people to be at their computers, signed into Gmail at the same time. Given that most of us don’t spend all day in front of our computers, we thought, “wouldn’t it be nice if you could call people directly on their phones?”

Starting today, you can call any phone right from Gmail."

The 12 Best Ways To Customize Your Facebook Pages

2010-08-24T21:51:00.000-07:00

The 12 Best Ways To Customize Your Facebook Pages: "When a service such as Facebook limits users’ creative freedom, it is inevitable that other add-on services will overcome this limitation. This is why then, we see more and more Facebook tab apps that give us more control and freedom when it comes to customizing a fan page or a personal profile."

Orkut Lets You Communicate with Groups of Friends

2010-08-24T21:45:00.000-07:00

Orkut Lets You Communicate with Groups of Friends: "Orkut, Google's social network that has a lot of users in Brazil and India, has received a major update. Groups of friends are more visible and you can send messages to the members of a group directly from Orkut's homepage. Orkut also updated search results pages and application pages, while testing a new platform for communities."

The Observer Pattern

2010-08-23T06:40:00.000-07:00

The Observer Pattern: "If I'm going to implement my own Observer and Observable classes it's because I'm adding generics in the process (loosing flexibility to remove all those ugly checks). Otherwise I'd just stick to java.util implementations."

Waste #1: Partially Done Work | Agile Zone

2010-08-21T09:52:00.000-07:00

Waste #1: Partially Done Work | Agile Zone

App Engine Now Has Multi-Tenancy and Increased Datastore Quotas

2010-08-19T21:48:00.000-07:00

App Engine Now Has Multi-Tenancy and Increased Datastore Quotas | Javalobby

Google Buys Jambool: Social Networking Battle Begins - Yahoo! News

2010-08-16T21:31:00.000-07:00

Google Buys Jambool: Social Networking Battle Begins - Yahoo! News: "Google has purchased virtual currency platform Jambool, a move that will fuel Google's reported foray into the social networking world. Jambool's Chief Executive Vikas Gupta and Chief Technology Officer Reza Hussein confirmed the deal Friday on the company's website. 'We are excited to announce that Jambool is becoming a part of the Google family today,' the founders write. They add, 'The game has only just begun.'"

Gmail's Streamlined Interface and Better Contact Manager

2010-08-10T21:17:00.000-07:00

Gmail's Streamlined Interface and Better Contact Manager: "Google launched a slightly refreshed Gmail UI that hides unessential features and uses more screen estate to display your messages. Gmail's logo is smaller, the links to mail, contacts and contacts are grouped in a collapsible panel, while the options that let you select all messages, starred or unread messages are available in a drop-down."

Google Buys Slide

2010-08-08T21:15:00.000-07:00

Google Buys Slide: "Google announced that it has acquired Slide, a start-up that develops social apps. TechCrunch reports that Google paid $228 million for Slide, after investing in Zynga, one of Slide's competitors."

Drag and drop attachments to save them to your desktop

2010-08-05T23:48:00.000-07:00

Drag and drop attachments to save them to your desktop - Official Gmail Blog: "Let’s say you have an email open containing an attachment. Hover your mouse over the attachment’s “Download” link or its file icon and a tooltip appears that says: “Click to view OR drag to your desktop to save.'"

Instantiations is now part of Google

2010-08-05T21:32:00.000-07:00

Instantiations is now part of Google: "We’re excited to announce that Instantiations is now part of Google!
Yes it’s true. Instantiations’ award-winning Java and Ajax development tools and our incredible Eclipse team have been acquired by Google. We are all very excited about taking our technology and team to the next level - and there is no bigger step up than Google!"

Google Wave to Be Discontinued

2010-08-05T21:30:00.000-07:00

Google Wave to Be Discontinued: "Wave has not seen the user adoption we would have liked. We don't plan to continue developing Wave as a standalone product, but we will maintain the site at least through the end of the year and extend the technology for use in other Google projects. The central parts of the code, as well as the protocols that have driven many of Wave's innovations, like drag-and-drop and character-by-character live typing, are already available as open source, so customers and partners can continue the innovation we began"

LinkedIn Recruitement Tool

2010-08-05T09:15:00.000-07:00

LinkedIn Recruitement Tool

1. Targeted to help recruitment professionals in segregating profiles from LinkedIn.
2. Bookmark public profiles (you do not have to request for a connection).
3. Assign categories to profiles. This is helpful in order to review/keep track of filtered profiles.
4. Add notes to profiles (e.g. number of years of experience). 
5. Ease of maintaining candidates' info by saving their email and contact numbers.
6. Delete profiles from your list if you don't need them.
7. Offline access to your saved data. You can access your saved data without internet connection.
8. Remember Search button is not the ultimate solution when you have better tools available like this!

Click on the extension icon after you have browsed a LinkedIn public profile. 
It will take you to the options page where you can enter the data you want to save.
Once you are done with your changes click on the save button(Close this new tab and continue with LinkedIn for more candidates).

Rest you can explore!

News as per your choice!

2010-08-03T21:24:00.000-07:00

News you like!

No need to search for the news you are interested in! News You Like lets you browse the news related to the topics as per your choice.  Simply go to Options and enter topics you would like to have news about.

download this extension from the following URL:

https://chrome.google.com/extensions/detail/mhhfpkohhndikjdifdgdeckmlgpohkoo?hl=en

Opportunities In The Patent-Free Zone

2010-08-01T07:53:00.000-07:00

Opportunities In The Patent-Free Zone

"you can freely leverage the wealth of proven intellectual property that has already been created in developed economies. Most countries outside the U.S. and Europe lie in a Patent-Free Zone—where companies have not filed patents because they believe there is no market for their goods. So this intellectual property is available to anyone in those nations who can find a use for it."

Upcoming Gmail Features

2010-08-01T07:47:00.000-07:00

Upcoming Gmail Features

Overlapping Experiment Infrastructure: More, Better, Faster Experimentation

2010-07-29T21:30:00.000-07:00

Overlapping Experiment Infrastructure:

More, Better, Faster Experimentation
Powered by Google Docs

Find Blogs Using Google Blog Search

2010-07-29T21:28:00.000-07:00

Find Blogs Using Google Blog Search:

'We've updated Google Blogsearch to make it easier to find blogs that match your query, instead of just finding blog posts. The blogs tool on Google search results filters your results so you see only blog posts. We've added a homepages option that shows a full set of blogs related to your query,' informs Jeremy Hylton

TechCrunch Updates!

2010-07-24T20:50:00.000-07:00

TechCrunch Updates!

TechCrunch Updates on your desktop!

This extension will look for latest TechCrunch Posts. 

User can set preference for the time interval in the Options page, after which checking for any new update will be done. Default time interval is 30 minutes. 

Click-able link in the notification will take you to TechCrunch's original post.

A must download for TechCrunch fans!

Google Updates!

2010-07-23T22:27:00.000-07:00

            Google Updates!

This extension will look for latest Google activities/announcements/releases. 

User can set preference for the time interval in the Options page, after which checking for any new update will be done. Default time interval is 30 minutes. 

Click-able link in the notification will take you to that page.

A must download for Google fans!

Screen Capture Extension for Google Chrome

2010-07-23T21:16:00.000-07:00

"Google repackaged some of the code from the Feedback extension as a screen capturing Chrome extension. Google's tool lets you save the content of a tab as a PNG image, annotate the screenshot and highlight interesting parts of the image. The extension is able to capture the visible content of a tab, a region or the whole page, but it needs to scroll the page to capture the content that's not visible."

Source : Screen Capture Extension for Google Chrome

A New Version Of Google Chrome Now Due Every Six Weeks

2010-07-23T06:32:00.000-07:00

A New Version Of Google Chrome Now Due Every Six Weeks: "So why is Google doing this? Because they’re creating new features so quickly and they want to make sure all users get them as fast as possible.�These quick iterations also will allow Google to have more firmly set schedules for Chrome. And as a result, project managers will be able to set realistic goals for amount of work that can be done by a certain time."

Google Image Search Bugs

2010-07-21T21:51:00.000-07:00

Google Image Search Bugs: "The most significant Google Image Search redesign comes with many useful features and a lot of bugs.

If you type a query in Google Image Search, click on the search button, scroll the page, click on the Google logo, type another query and select the 'images' option, Google scrolls to a random part of the page. For example, it could scroll to the page 57."

Google Images presents a nicer way to surf the visual web

2010-07-21T21:50:00.000-07:00

Official Google Blog: Ooh! Ahh! Google Images presents a nicer way to surf the visual web

Hindi Samachar

2010-07-18T21:54:00.000-07:00

Hindi Samachar shows the latest Indian news in Hindi.

https://chrome.google.com/extensions/detail/ijjidjckjgncffaabnfbbcadhlkfgkde

The news scroll automatically to show its related brief news. You can also read the selective news as you take the mouse over the headline. Click on the headline for detailed news.

Chrome Connect - Connect and discuss with people about chrome!

2010-07-16T01:39:00.000-07:00

https://chrome.google.com/extensions/detail/gaigbnfdhehflkldamepafiokmgcdgoh?hl=en

Chrome Connect is a platform to share chrome related stuff.
Sign in with either of your google/twitter/yahoo/AIM/Netlog/openID accounts.
You can post a new message or reply to any prior posted messages.
YouTube links can be posted as well. Clicking on the video-preview plays it in a popup.

Java VisualVM

2010-07-14T22:29:00.000-07:00

visualvm: Getting Started with VisualVM

"VisualVM provides detailed information about Java applications while they are running on the Java Virutal Machine (JVM). VisualVM's graphical user interface enables you to quickly and easily see information about multiple Java applications."

App Inventor for Android

2010-07-12T21:50:00.000-07:00

App Inventor for Android

You can build just about any app you can imagine with App Inventor.

"To use App Inventor, you do not need to be a developer. App Inventor requires NO programming knowledge. This is because instead of writing code, you visually design the way the app looks and use blocks to specify the app's behavior."

Which Browser Is Best for Your Work?

2010-07-11T21:48:00.000-07:00

Which Browser Is Best for Your Work? - Yahoo! News

Net Market Share's recent Web browser statistics show Internet Explorer remaining the most popular, with 60 percent of the market share, which includes versions 6, 7, and 8. Firefox 3.6 comes in second at 24 percent, and Google's Chrome 5.0 is holding third place at 7 percent.

OpenGeoTracker

2010-07-11T21:46:00.000-07:00

OpenGeoTracker API Profile:

"OpenGeoTracker is an open source platform (both client and server) for logging, retrieving and displaying GPS data."

Let's make the web faster

2010-07-11T21:44:00.000-07:00

Google has recently published a report about the Web, which includes a lot of interesting stats. The results were obtained from a sample of 4.2 billion web pages indexed by Google.

"The average web page takes up 320 KB on the wire (Google took into account the embedded resources such as images, scripts and stylesheets). Only two-thirds of the compressible material on a page is actually compressed. In 80% of pages, 10 or more resources are loaded from a single host."

Let's make the web faster - Google Code

Effective Teamworking With Eclipse: Change Sets | Javalobby

2010-07-10T00:03:00.000-07:00

Effective Teamworking With Eclipse: Change Sets | Javalobby

Working with change sets is an amazing experience. Now I don't have to fetch change logs from SVN. Good for code review etc as well.

Shorter Google Maps URLs

2010-07-09T23:20:00.000-07:00

Shorter Google Maps URLs:

"Google Maps Labs added a feature called 'short URLs' that shows short permalinks when you click on 'Link'. The nice thing about this feature is that it uses Google's URL shortening service, which is very fast, and URLs are more descriptive because they include 'goo.gl' and 'maps'."

Happy Tweeting!

5 things you didn't know about ... Java performance monitoring, Part 1

2010-07-09T04:44:00.000-07:00

5 things you didn't know about ... Java performance monitoring, Part 1

Interesting lines...

"JConsole is a built-in Java performance profiler that works from the command-line and in a GUI shell. It's not perfect, but it's a more than adequate first line of defense when pointy-head boss comes at you with a performance problem — and it's a whole lot better than consulting Papa Google."

Mozilla Firefox 4 Beta

2010-07-08T22:38:00.000-07:00

Firefox 4 is awesome. Check this out:

Mozilla Firefox 4 Beta Release Notes

Yahoo Outsources For-Sale Real Estate Listings To Zillow

2010-07-08T21:41:00.000-07:00

Yahoo Outsources For-Sale Real Estate Listings To Zillow

"Zillow’s will integrate its 4 million for-sale listings on Yahoo’s real estate site"

Find Java Bugs with FindBugs

2010-07-08T04:51:00.000-07:00

A good tool for analyzing your Java source code. You can quickly locate the defects and fix them. A must run after code freeze.

Find Java Bugs with FindBugs | Javalobby

Google Buys ITA Software to Add Flight Search

2010-07-08T01:57:00.000-07:00

Google into Travel World!

Google Buys ITA Software to Add Flight Search

When Google Doesn't Return the Most Relevant Results

2010-07-08T01:27:00.000-07:00

An interesting article on google search results!!!

When Google Doesn't Return the Most Relevant Results

EmailValidator Email validator using apache commons

2010-07-07T23:48:00.000-07:00

Email validator using apache commons:

EmailValidator (Commons Validator 1.4-SNAPSHOT API)

Too good if you want to validate email Ids in your java code.

News You Like

2010-07-06T05:56:00.000-07:00

News as per your choice!

No need to search for the news you are interested in! News You Like lets you browse the news related to the topics as per your choice.  Simply go to Options and enter topics you would like to have news about.

download this extension from the following URL:

https://chrome.google.com/extensions/detail/mhhfpkohhndikjdifdgdeckmlgpohkoo?hl=en

Quick Access

2010-07-06T05:55:00.000-07:00

Your favorite websites at your finger tips!

All you need to do is to click on the icon in order to have instant access of your favorite website.  You can create your quick access links on your own using Quick Access Manager.

Download this extension from the following URL:

https://chrome.google.com/extensions/detail/kfnecblapggejbhocfaglhhlejjnpjfj?hl=en

What's New!

2010-07-06T05:54:00.000-07:00

What's New notifies you about the new chrome extensions being published!

User can set preference for the time interval after which checking for any new extension should be done. Default time interval is 30 minutes. The extension remembers the latest notification sent to the user. No notification will be displayed if no new extension is available.  Click-able link in the notification will take you to that extension's page.  A must download for chrome extension lovers!

https://chrome.google.com/extensions/detail/libpcmhepicbgngiakhglhkfdogpbmma?hl=en

RichFaces 4.0.0.Alpha2 Released

2010-06-26T22:20:00.000-07:00

RichFaces 4 is based on jsf2 specification.

Lots of components/widgets with easy ajax support and much more.

RichFaces 4.0.0.Alpha2 Released - TheServerSide.com

www.biharpower.com

Domain driven design redefined

2010-06-26T20:51:00.000-07:00

Nice article on domain driven design. "Focus on the core domain" and "Explore models in a creative collaboration with domain practitioners and software practitioners"

Domain driven design redefined | Agile Zone

www.biharpower.com

Domain-Driven Design

2010-06-26T20:46:00.000-07:00

Designing an enterprise application? Have a look at DDD. It's simple and modular. Probably the best way to prevent data getting corrupted in various layers of your application.

Domain-Driven Design Community

www.biharpower.com

Design and implement POJO Web services using Spring and Apache CXF, Part 1: Introduction to Web services creation using CXF and Spring

2010-06-26T03:34:00.000-07:00

Web service design and implementation got even easier with apache CXF. If you are familiar with Java then you can enable web service in an existing application by simply adding few annotations.

The apache CXF community seems to be very active and lots of online blogs/tutorials/examples are the secondary keys why you should choose such a framework for web service implementation.

Design and implement POJO Web services using Spring and Apache CXF, Part 1: Introduction to Web services creation using CXF and Spring

http://www.biharpower.com/

Applications Gallery - Google App Engine

2010-06-25T20:57:00.000-07:00

Lots of interesting applications!

SnapABug is one of my favorites. Giftag, Micolog, TuiTwit etc are some really really ql applications.

Applications Gallery - Google App Engine - Google Code

FIFA.com Chrome Extension

2010-06-25T20:46:00.001-07:00

Stay up to date with World Cup live results and stats while browsing the web.

Features:
- live results (you can personalise which teams you want to follow)
- news
- full competition schedule
- standings
- share events on FB, Twitter and/or Buzz

Add Background Images to Google's Homepage

2010-06-25T20:42:00.000-07:00

Add Background Images to Google's Homepage

Design Patterns Uncovered: The Builder Pattern | Javalobby

2010-06-25T20:28:00.000-07:00

The Builder pattern comes under creational pattern category.

If you want to decouple objects from the implementing system, probably this is the pattern you should follow. Design and timplementation of this java pattern is quite simple. Just Try it out.

Design Patterns Uncovered: The Builder Pattern

Git in Eclipse | Eclipse Zone

2010-06-25T20:22:00.000-07:00

Eclipse 3.6 is released! Java IDE is getting smarter with every release.

Git in Eclipse | Eclipse Zone

Distance Measurement in Google Maps Labs

2010-06-25T20:19:00.000-07:00

Now you can measure the distance between two points in Google maps. For now this feature is available in Google maps labs only.

Distance Measurement in Google Maps Labs

Spring Expression Language : One of the new features in spring 3.0

2009-12-04T21:48:00.000-08:00

Spring Expression Language : One of the new features in spring 3.0

shop.xml


package jbasics.spring.example;

import sun.misc.BASE64Encoder;

public class ShopKeeper {
 public String getKeyId(){
  return new BASE64Encoder().encode("key".getBytes());
 }
}


package jbasics.spring.example;

public class ShopInfo {
 private String shopDisplayName = "MY SHOP";
 public String getShopDisplayName() {
  return shopDisplayName;
 }

 public void setShopDisplayName(String shopDisplayName) {
  this.shopDisplayName = shopDisplayName;
 }
}


package jbasics.spring.example;

import java.util.HashMap;
import java.util.Map;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Shop {
 private ShopKeeper shopKeeper;
 private String shopName;
 private String shopDisplayName;
 private static Map map = new HashMap();
 static{
  map.put("prop1", "value1");
  map.put("prop2", "value2");
 }
 public static void main(String strAr[]){
  ApplicationContext appContext = new ClassPathXmlApplicationContext(new String[]{"shopApp.xml"});
  Shop shop = (Shop)appContext.getBean("shop");
  String keyId = shop.getShopKeeper().getKeyId();
  System.out.println("keyId = "+keyId);
  System.out.println("shopName = "+ shop.getShopName());
  System.out.println("shopDisplayName = "+ shop.getShopDisplayName());
 }
 public ShopKeeper getShopKeeper() {
  return shopKeeper;
 }
 public void setShopKeeper(ShopKeeper shopKeeper) {
  this.shopKeeper = shopKeeper;
 }
 public String getShopName() {
  return shopName;
 }
 public void setShopName(String shopName) {
  this.shopName = shopName;
 }
 public String getShopDisplayName() {
  return shopDisplayName;
 }
 public void setShopDisplayName(String shopDisplayName) {
  this.shopDisplayName = shopDisplayName;
 }
 public Object getPropertyByType(String type) {
  return map.get(type);
 }
}

Working with menus: Struts-menu

2009-11-11T04:45:00.000-08:00

I’m extremely impressed with struts-menu.jar! A nice demo can be viewed at http://demo.raibledesigns.com/struts-menu/index.jsp

To use it with struts add following in struts-config:


<plug-in className="net.sf.navigator.menu.MenuPlugIn">
    <set-property property="menuConfig" value="/WEB-INF/menu-config.xml"/>
  </plug-in>

Menu-config.xml contains various displayers (displayer class mapped with name). The name of particular displayer is used in ‘name’ attribute of ‘menu:useMenuDisplayer’ tag. The file also contains all the menus (n number of Item tags, nested upto n levels, inside Menu tags). The following link gives a details about the ‘permissions’ attribute of the tag & its PermissionsAdapter http://struts-menu.sourceforge.net/security.html

My main concern was being able to set menu permissions to roles via UI and enabling them.
Solution:


<menu:useMenuDisplayer name="MenuForm" bundle="org.apache.struts.action.MESSAGE">
<table cellpadding=0 cellspacing=0>
          <tr> <td>
              <menu:displayMenu name="Menu1"/>
            </td> </tr>
  //rest of the menu:displayMenu in tr td here

MenuForm shows checkboxes in front of each Menu (& its Items). The selection can be retrieved in the Action class & pass the selection to your class that will edit the menu-config file and add the given role in the selected Items’ (& their Menus) ‘roles’ attribute. (Remember- ‘roles’ is not a mandatory attribute…but not attaching ‘roles’ indicates that the menu is visible to all).I used DOM parser to edit the same.


String[] menus = request.getParameterValues("menus");
PermissionsSaver permissionsSaver = new PermissionsSaver(); //this class works on setting selected roles against selected menus
permissionsSaver.setRoleName(roleName);
permissionsSaver.setFilePath(getServlet().getServletContext().getRealPath("WEB-INF"));
permissionsSaver.savePermissions(menus);

I noticed that directly attaching File.separator with directory name was attaching user.dir (in my case TOMCAT_HOME) path prior to it….but it works fine when you run it as a java app! So found a way out- attaching servletContext’s getRealPath().

Now the menu-config.xml is edited but how to bring the roles’ permissions in effect without restart…its content gets loaded in memory while the application starts up! But exploring the source code of the jar I found a way out… got the MenuRepository class!


MenuRepository menuRepository = new MenuRepository();
menuRepository.setServletContext(getServlet().getServletContext());
menuRepository.setLoadParam(File.separator+"WEB-INF" + File.separator + "menu-config.xml");
menuRepository.reload();
getServlet().getServletContext().setAttribute(MenuRepository.MENU_REPOSITORY_KEY, menuRepository);

As setting permissions against roles is not a frequent process I do not find any issue with this way of modifying the in-memory values!

Thanks to struts-menu- I could neatly manage all the menus in a single file. And also display them based on roles. Now I want to use tabbed menus gifted by it!

Resolving Issues of TransformerFactory- Java 6

2009-11-05T05:08:00.000-08:00

I was facing unexpected problem while DOM Document (org.w3.dom) to file. Code was simple, snippet:



DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder parser = factory.newDocumentBuilder();
document = parser.parse(filePath);
//logic to edit nodevalue of node type Node.ELEMENT_NODE 

//write back to the file

TransformerFactory factory = TransformerFactory.newInstance();
Transformer transformer = factory.newTransformer();
transformer.transform(new DOMSource(document), new StreamResult(new File(filePath)));

But TransformerFactory newTransformer() line was throwing exception- Could not load the property file 'output_xml.properties'!

On searching for cause/solution I got to read Java 1.4 onwards is packaged with an old version of Xalan-Java! Got solution also- downloaded xalan 2.7.1. Copied its jars ( serializer, xalan, xercesImpl, xml-apis, xsltc….. the last one was not suggested, but I did it to be on safer side!) to the \lib\endorsed . This folder is not existing by default, need to create it. Got good article on Endorsed Standards Override Mechanism This works!!

Also got an article explaining why we should go for DocumentBuilderFactory.newInstance() rather than new DOMParser();

Using Radio Button in a Struts loop

2009-10-05T03:33:00.001-07:00

Scenario: I'd a result set of a select query. To display the result in tabular form on UI I used nested:iterate (and respective nested:write tags inside). I wanted to provide radio buttons corresponding to each row so as to be able to update/delete the selected row. Done.
This went smooth...I encountered problem when I wanted to get the value of radio selection......what value to assign to the radio button!!
Here is the hack:
Suppose "name" is the primary key, I want to associate selection with "name"


<table>
...
<nested:iterate property="formProperty">
<bean:define id="name">
<tr>
<td><html:radio property="selection" value="<%=name%>"></html:radio></td>
<td><nested:write property="name"/></td>
...
</nested:iterate>
</table>

I kept worrying how ugly it would look- name will be visible prior to radio button! (name is used in nested:write inside bean:define) ... But I was pleasantly surpised to see on running my app that anything written inside define tag does not render :) So it was perfect, I could even recognise which row is being selected in my Action class, taking the value of radio button!

Tiles Vs. jsp:include & Tiles Implementation

2009-09-25T23:52:00.000-07:00

Looking from functionality point of view there is not much of difference between inserting a tile or including a jsp. But the main advantage that tiles gives you is single point of modification in case you need to do any modification(.....which is often the case!) You don't have to go to all the pages and modify the jsp:include. Just change the layout definition.

Only that you need to be careful in case you want to call body onload in case of tiles with struts. Only the onload function of main (layout) jsp gets called. In case of jsp:inlcude, all the onloads gets called. But yeah I got a workaround to that (it applied to my need....you need to find your own :) )

Here are simple steps to use tiles in struts:

1. Prepare a layout jsp. This will include the table, tr(s) and td(s). Put tiles:insert in the desired columns. e.g.


<tiles:insert attribute="body">

2. In tiles-defs.xml write definition


  <definition name="basicLayout" path="/Layout.jsp">

          <put name="...." value=".../">

          <put name="body" value="/Body.jsp"/>

          ....

3. Most of the times you can reuse the one time defined layout by extending it. It will rarely be the case that you'll have to write multiple layouts for same application (1st step to be repeated in that case)


  <definition name="reports" extends="basicLayout">

          <put name="body" value="/BodyReports.jsp">

          <!-- If anything else to be overridden add -->

  </definition>

4. From struts-config you can direct to the tiles by specifying the definition name in forward path name e.g.


  <action path="reportMgmt" name="FormName" type="package.FormAction">

     <forward name="success" path="reports"/>

      ...

   </action>

5. Add TilesRequestProcessor and TilesPlugin inside struts-config tag


    <controller processorclass="org.apache.struts.tiles.TilesRequestProcessor"/>

 

     <plug-in classname="org.apache.struts.tiles.TilesPlugin">

      <set-property property="definitions-config" value="/WEB-INF/tiles-defs.xml"/>

      <set-property property="definitions-parser-validate" value="true/">

      <set-property property="moduleAware" value="true"/>

  </ plug-in >

You also need to add tiles.jar, tiles-config.dtd and struts-tiles.tld to your struts project.

Implementing duplicate keys map

2009-08-22T22:22:00.000-07:00


package jbasics.util;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Set;

/**
 * A map which holds duplicate keys. This map internally maintains a
 * {@link HashMap} which holds unique keys but a list of values corresponding to
 * that key.
 * 
 * @author jbasics
 * 
 * @param <Key>
 * @param <Value>
 */
public class DuplicateKeysMap<Key, Value> {

 /**
  * Internal HashMap which holds a list of values corresponding to a key.
  */
 private HashMap<Key, List<Value>> internalMap = null;

 /**
  * Default Constructor
  */
 public DuplicateKeysMap() {
  internalMap = new HashMap<Key, List<Value>>();
 }

 /**
  * Put method; very much similar to {@link HashMap#put(Object, Object)} but
  * it accepts duplicate keys. Another difference is return type which is
  * void in this case.
  * 
  * @param k
  * @param v
  */
 public void put(Key k, Value v) {
  List<Value> valuesList = internalMap.get(k);
  if (null == valuesList) {
   valuesList = new ArrayList<Value>();
   internalMap.put(k, valuesList);
  }
  valuesList.add(v);
 }

 /**
  * This method is similar to {@link HashMap#get(Object)} except the return
  * is a List<Value> type.
  * 
  * @param k
  * @return list of values
  */
 public List<Value> get(Key k) {
  return internalMap.get(k);
 }

 /**
  * @see HashMap#remove(Object)
  */
 List<Value> remove(Key key) {
  return internalMap.remove(key);
 }

 /**
  * This method is exactly same as {@link HashMap#keySet()}
  * 
  * @return key set
  */
 public Set<Key> keySet() {
  return internalMap.keySet();
 }
}

Serialization: Tips & Tricks

2009-08-21T07:31:00.000-07:00

1.We are well aware that if we need to flatten an object to reuse it, the class or its superclass must either implement Serializable (marker interface) or Externalizable [writeExternal(ObjectOutput
out) and readExternal(ObjectInput in)]. Consider the case where superclass is not
Serializable but subclass is. Superclass does have non-transient field(s). Suppose you save a subclass object in file and now try to deserialize it. Will the superclass throw NotSerializableException?


import java.io.*;

class Food {
 Food() {
  System.out.print("Food ");
 }
}
class Fruit extends Food implements Serializable {
 private static final long serialVersionUID = 1L;
 Fruit() {
  System.out.print("Fruit ");
 }
}
public class Apple extends Fruit {
 private static final long serialVersionUID = 1L;

 public Apple() {
  System.out.print("Apple ");
 }
 public static void main(String[] args) {
  Apple b = new Apple();
  try {
   FileOutputStream fout = new FileOutputStream("Apple.txt");
   try {
    ObjectOutputStream out = new ObjectOutputStream(fout);
    out.writeObject(b);
    out.flush();
    out.close();
    System.out.println("Serialized");
    ObjectInputStream in = new ObjectInputStream(
      new FileInputStream("Apple.txt"));
    try {
     b = (Apple) in.readObject();
     in.close();
     System.out.println("Deserailized");
    } catch (ClassNotFoundException e) {
     e.printStackTrace();
    }
   } catch (IOException e) {
    e.printStackTrace();
   }
  } catch (FileNotFoundException e) {
   e.printStackTrace();
  }
 }
}

No Exception will be thrown but the constructor of superclass gets called while deserializing the object. The subclass constructor does not get called.Output of the above code is
Food Fruit Apple Serialized
Food Deserailized

2.What if superclass is serializable but you don't want subclass to be serializable? Simply override writeObject and readObject and throw NotSerializableException in them. e.g.


private void writeObject(ObjectOutputStream out) throws IOException{
throw new NotSerializableException("Not Serializable");
}

3.If object is written to a stream, its state is changed and now rewritten to stream...what will be the state when the object is deserialized? The first one or second? First. The second one does not get saved at all!
There are two ways to control that situation. First, you could make sure to always close the stream after a write call, ensuring the new object is written out each time. Second, you could call the ObjectOutputStream.reset() method, which would tell the stream to release the cache of references it is holding so all new write calls will actually be written. Be careful, though -- the reset flushes the entire object cache, so all objects that have been written could be rewritten.

Simple Thread Dead-Lock example

2009-08-20T10:32:00.000-07:00


//FirstDataHolder which is a wrapper of secondDataHolder
package oops.thread.deadLock;
public class FirstDataHolder {
 private SecondDataHolder secondDataHolder = null;
 public void setSecondDataHolder(SecondDataHolder secondDataHolder) {
  this.secondDataHolder = secondDataHolder;
 }
 public SecondDataHolder getSecondDataHolder() {
  return secondDataHolder;
 }
 public synchronized void acquireLock() {
  try {
   Thread.sleep(2000);
   secondDataHolder.accessIfYouCan();
  } catch (InterruptedException e) {
   e.printStackTrace();
  }
 }
 public synchronized void accessIfYouCan() {
 }
}


//SecondDataHolder which is a wrapper of firstDataHolder
package oops.thread.deadLock;
public class SecondDataHolder {
 private FirstDataHolder firstDataHolder = null;
 public void setFirstDataHolder(FirstDataHolder firstDataHolder) {
  this.firstDataHolder = firstDataHolder;
 }
 public FirstDataHolder getFirstDataHolder() {
  return firstDataHolder;
 }
 public synchronized void acquireLock() {
  try {
   Thread.sleep(2000);
   firstDataHolder.accessIfYouCan();
  } catch (InterruptedException e) {
   e.printStackTrace();
  }
 }
 public synchronized void accessIfYouCan() {
 }
}


//FirstThread which first acquires a lock on firstDataHolder, 
//tries to access secondDataHolder and goes into waiting state 
//since SecondThread has acquired a lock on secondDataHolder.
package oops.thread.deadLock;
public class FirstThread extends Thread {
 private FirstDataHolder firstDataHolder = null;
 public FirstThread(FirstDataHolder firstDataHolder) {
  this.firstDataHolder = firstDataHolder;
 }
 @Override
 public void run() {
  firstDataHolder.acquireLock();
 }
}


//SecondThread which first acquires a lock on secondDataHolder, 
//tries to access firstDataHolder and goes into waiting state 
//since FirstThread has acquired a lock on firstDataHolder.
package oops.thread.deadLock;
public class SecondThread extends Thread {
 private SecondDataHolder secondDataHolder = null;
 public SecondThread(SecondDataHolder secondDataHolder) {
  this.secondDataHolder = secondDataHolder;
 }
 @Override
 public void run() {
  secondDataHolder.acquireLock();
 }
}


//Main class which you need to run in order to see the dead-lock!
package oops.thread.deadLock;
public class DeadLockEx {
 public DeadLockEx() {
  FirstDataHolder firstDataHolder = new FirstDataHolder();
  SecondDataHolder secondDataHolder = new SecondDataHolder();

  firstDataHolder.setSecondDataHolder(secondDataHolder);
  secondDataHolder.setFirstDataHolder(firstDataHolder);

  Thread firstThread = new FirstThread(firstDataHolder);
  firstThread.setName("FirstThread");
  firstThread.start();

  Thread secondThread = new SecondThread(secondDataHolder);
  secondThread.setName("SecondThread");
  secondThread.start();

 }
 public static void main(String[] args) {
  new DeadLockEx();
 }
}

Understanding Thread Communication

2009-08-17T10:12:00.000-07:00

Threads communicate to each other with the help of wait,notify and notifyAll methods in synchronized context. Consider the following example to have a better understanding of how it actually happens:


package oops.thread.communicate;
public class Requirements {
 public void startImplementation() {
  System.out.println("Started Implementing The Requirements!");
 }
}


package oops.thread.communicate;
public class Developer extends Thread {
 private Requirements requirements = null;
 public Developer(Requirements requirements) {
  this.requirements = requirements;
 }
 @Override
 public void run() {
  synchronized (requirements) {
   try {
    System.out.println("Developer is waiting for the requirements!!!");
    requirements.wait();
    System.out.println("Developer will start the implementation now!!!");
    requirements.startImplementation();
   } catch (InterruptedException e) {
    e.printStackTrace();
   }
  }
 }
}


package oops.thread.communicate;
public class Analyst extends Thread {
 private Requirements requirements = null;
 public Analyst(Requirements requirements) {
  this.requirements = requirements;
 }
 @Override
 public void run() {
  synchronized (requirements) {
   try {
    System.out.println("Analyst is doing the analysis!!!");
    Thread.sleep(2000);
    System.out.println("Notifying NOW!!!");
    requirements.notify();
   } catch (InterruptedException e) {
    e.printStackTrace();
   }
  }
 }
}


package oops.thread.communicate;
public class ThreadCommunication {
 public static void main(String[] args) {
  Requirements requirements = new Requirements();
  Developer developer = new Developer(requirements);
  developer.start();
  Analyst analyst = new Analyst(requirements);
  analyst.start();
 }
}

Observer Design Pattern

2009-08-17T08:33:00.002-07:00

Observer Pattern Comes Under the Behavioral Patterns.


// Observer interface is available under java.util package.
// This interface has update method which gets called as soon
//as the status of Observable class changes and it
//notifies the observers.
package oops.observer;
import java.util.Observable;
import java.util.Observer;
public class ProjectLead implements Observer{
 @Override
 public void update(Observable arg0, Object arg1) {
  System.out.println(this.getClass().getSimpleName() +" received updates from    "+arg0.getClass().getSimpleName() +" "+arg1);
 }
}


//Another observer for project development.
package oops.observer;
import java.util.Observable;
import java.util.Observer;
public class Client implements Observer {
 @Override
 public void update(Observable arg0, Object arg1) {
  System.out.println(this.getClass().getSimpleName() +" received updates from "+arg0.getClass().getSimpleName() +" "+arg1);
 }
}


//Developer : does the regular work and notifies observers.
//Observable class belongs to java.util package and has two
// important methods : setChanged and notifyObservers
package oops.observer;
import java.util.Observable;
public class Developer extends Observable {
 private String name;
 public Developer(String name){
  this.name = name;
 }
 public void doRegularWork() {
  workOnAssignments();
  sendUpdates();
 }
 private void workOnAssignments() {
  // TODO :
 }
 private void sendUpdates() {
  setChanged();
  notifyObservers(name);//NOTE : notifyObservers without argument is also available!
 }
}


//ProjectDevelopment : A framework to track the development progress.
package oops.observer;
public class ProjectDevelopment {
 public static void main(String[] args) {
  Developer dev = new Developer("Ranjan");
  ProjectLead lead = new ProjectLead();
  Client client = new Client();
  dev.addObserver(lead);
  dev.addObserver(client);
  dev.doRegularWork();
 }
}