Life of a java disciple

Disabling browser context menu in ExtJS

2009-12-24T07:30:00.000-08:00

Many a times when ExtJs context menu (Right Click Menu) is added to components, it creates a problem as browser right click menu comes up after ExtJs right click menu is displayed. This is one of common issues posted on ExtJs forums consistently. Here is a simple way to solve the problem:Add the following line: Ext.getBody().on("contextmenu", Ext.emptyFn, null, {preventDefault: true});as first

The Boy Who Harnessed the Wind

2009-10-09T00:09:00.000-07:00

First watched this dude on John Stewart. Most fascinating thing I heard in a while and proof world is filled with Hope:

Bye Bye Spammers

2009-02-19T22:27:00.000-08:00

It appears after the latest attempt to drop the connection from spammers at IP level, traffic has come to normal level. To read about the issue and resolution follow these links:Day 1Day 2Graph showing traffic returning to normal:

Someone remind google what year it is

2009-02-19T00:09:00.000-08:00

Chrome 1.0.154.48. was released on Feb 3 2009.Chrome home page seems to have the same issue:

More fun with Proxy

2009-02-17T19:46:00.000-08:00

After disabling proxy on my server, I still see traffic on my server being high (My monthly quota might not exceed at this rate but takes up 50% of Bandwidth). Looking at access log it appears that requests hasn't stopped though they are getting 403 error. So requests coming to server and 403 response by itself is making up few GB worth a data every day. So decided to block these requests at IP

Proxy turn it off

2009-02-16T11:22:00.000-08:00

Noticed something funny on my personal webserver. I was testing some proxy settings and left proxy setting on when done. Today morning when I tried to access my server, its unreachable. Checking on the log's there seem to be too many requests proxying through my web server. All the IP's seem to originate from China and destination seems to be Ad server:60.173.11.121 - - [16/Feb/2009:12:07:27 -

JSF and Nested Diagnostic Context

2009-01-11T20:48:00.000-08:00

One of the important design criteria for any large concurrent system is to be able to audit and debug production logs. Any real-world web applications need to deal with multiple clients simultaneously. In a typical java web application implementation of such a system, different threads will handle different clients. A possible but discouraged approach to differentiate the logging output of one

Microsoft and Silly bugs

2009-01-10T11:01:00.000-08:00

Less than a fortnight back Zune30 leap year bug caused mass suicide of all Zune30 devices. Later on it was found to be simple looping bug in Zune's Clock Driver as shown here in the code to determine year part of the date:year = ORIGINYEAR; /* = 1980 */while (days > 365){ if (IsLeapYear(year)) { if (days > 366) { days -= 366; year += 1; } }

If Matrix ran on Windows

2008-12-24T17:46:00.000-08:00

Throwing this java.lang.Error can get you fired

2008-11-03T18:26:00.000-08:00

Imagine your boss going through your server log file and he see's the Error being thrown as CoderMalfunctionError. The discussion might not start in a pleasant way but you both might end up laughing since it really has nothing to do with Coder Malfunctioning. java.nio.charset.CoderMalfunctionError is thrown when either encoder or decoder is malfunctioning. Sun decided to call combination of

Debugging JWS with Eclipse

2008-10-17T21:56:00.000-07:00

After nearly 10 years, I spent considerable amount of time working on java desktop application recently. Looking at Java Web Start forums and FAQ it appears still users have issues with setting up Eclipse Remote Debugging with Java Web Start. This can be easily achieved by following three simple steps:1. Debug Java Web Start applications locally before deploying them on your web server. i.e use

Android Price

2008-09-23T15:07:00.000-07:00

I saw the live webcast and tried to preorder Andriod which was supposed to be 179$ with 2 year contract. But here is what I see when I go to TMobile web site and try to buy G1:

Best PC vs Mac Parody

2008-09-19T11:59:00.001-07:00

With all the hype around Microsoft and Apple Ads, I think this the best parody:

JPA: java.lang.IllegalArgumentException: Removing a detached

2008-09-15T22:16:00.000-07:00

One of the common issues that I end up debugging is the following exception:java.lang.IllegalArgumentException: Removing a detached instanceWhen does this occur?: While removing a record.Why does this occur?: You are trying to delete a record which is retrieved in another transaction (probably even trying to delete a record that is stored in user HTTP session).How to fix it?: Make sure you

Low cost Multi-Touch project

2008-08-31T23:02:00.000-07:00

Since there is too much hype of Multi-Touch products from different companies, its worth checking out Johnny Lee's cheaper version of Multi-Touch screen. I bought a LED flashlight for 18$ and ever since having fun with my WII.Here is a introduction video from Johnny Lee:Johnny Lee’s page has more info and is worth checking out.Also Wiimote Whiteboard has a good Java API that worked fairly well

Yahoo: Nicely Done

2008-08-28T14:21:00.000-07:00

Google and Yahoo both offer Ability to add RSS feeds to users personalized home page. While checking my personal server's access log, I noticed a nice little information that Yahoo sends with each request. It sends you data on how many users added your feed and how many times a feed has been loaded on users homepages. Here is a snippet from from yahoo and google requests from Apache access logs:

Making Div Clickable

2008-08-26T12:36:00.000-07:00

Here is a simple trick to make entire div clickable which is needed when you want to make a banner clickable for a site:The best part is inside the Div you can have other links redirecting user to a different page.

Google: Are you kidding me?

2008-08-25T22:47:00.000-07:00

That's the related search that World No 1 Search engine could come up for Java?Yahoo seems to be better in this case:I guess there is still need for multiple search engines.

Firefox Mobile Concept Video

2008-06-11T21:38:00.000-07:00

Forefox Mobile concept video by Aza Raskin: Firefox Mobile Concept Video from Aza Raskin on Vimeo.

A Clever Hack

2008-05-28T22:59:00.000-07:00

Once in a while you see things and think "Seems so simple, Why didn't I think of that?". This Hack by Aza Raskin belongs to that Category. He created a simple and smart way to read user browser history. In the example here, Aza is maintaining an array all the social networking sites he is aware of and checking which of those site the user has visited. How can he do that? By checking the color of

Why we need to care for Net neutrality

2008-05-13T21:27:00.000-07:00

iPhone like Android Demo

2008-03-02T00:12:00.001-08:00

Darren Waters of BBC interviewed Andy Rubin Google's director of mobile platforms who provided a demo of Android Phone. The phone is based on touch screen and shows features similar to Apple iPhone running on 300MHz (Compared to iPhone which is a 600MHz phone) and also running on 3G Network (3G iPhone is still in the works). Looks like iPhone killer phones may be based on Android.I have been

Go Daddy: Configure Apache HTTPd as a reverse proxy for Tomcat

2008-03-01T10:18:00.000-08:00

Configuring Apache HTTPd as reverse proxy is one way to re-route requests to Tomcat from Apache. This post addresses how to do that for Dedicated Virtual Hosting at GoDaddy.com. Doing this requires simple configuration changes as described below:1. Find httpd.conf file (usually located at /etc/httpd/conf).2. Make sure the following lines are not commented in the file (by default they are not

Java is everywhere

2008-01-17T16:23:00.000-08:00

Not sure how this is missed but SUN seem to have started posting to YouTube on how Java is Everywhere. Good PR to the minimum:

RIP Netscape Navigator

2008-01-06T00:01:00.000-08:00

AOL has announced that its discontinuing support for Netscape Web Browser. Though it was just matter of when, somehow I still have nostalgic feelings and fond memories of Netscape. Without Netscape, Internet would not have been what it is today. Some of the contributions from Netscape are good and some are bad but when Internet history is being written Netscape would have a chapter of its own.