CodeNaut

Hadoop Tutorial

2011-12-28T10:52:00.001-08:00

Yahoo! Hadoop Tutorial This tutorial includes the following materials designed to teach you how to use the Hadoop distributed data processing environment: Hadoop 0.18.0 distribution (includes full source code) A virtual machine image running Ubuntu Linux and preconfigured with Hadoop VMware Player software to run the virtual machine image A tutorial which will guide you

Web Usability - Accessible Data Tables

2011-12-27T20:41:00.001-08:00

Making your JSF datatable and html tables more accessible and 508 compliant. Web Usability - Accessible Data Tables shared via Firefox Share — "share links with the people that matter to you"

Firefox Share (alpha) :: Add-ons for Firefox

2011-12-22T06:38:00.001-08:00

Cool add on to post from the firefox address bar. Firefox Share (alpha) :: Add-ons for Firefox shared via Firefox Share — "share links with the people that matter to you"

CSS best practices

2011-12-15T10:18:00.000-08:00

CSS Notes I have compiled few CSS best practices and notes from various sources. I have attempted to give the original authors the credit, but if I am missing anything please leave a comment to correct. What are the benefits of using CSS over normal HTML element?a. Re-usability with CSS we can reuse styles that can be applied across different html elements.b. Maintenance:- Easier to

How to find the current logged in windows user from java?

2011-12-15T09:30:00.000-08:00

The class NTSystem will help to retrieve the logged in user name and other credentials. Example: NTSystem obj = new NTSystem();System.out.println("Logged In User Name "+obj.getName()); From the java docs :- This class implementation retrieves and makes available NT security information for the current user. http://docs.oracle.com/javase/6/docs/jre/api/security/jaas/spec/index.html?

Inputs and Conditional Processing in Batch File

2011-11-30T14:45:00.001-08:00

To get input from the console in a batch file and assign it to a variable the following syntax works very well. set /p name=Debug Y/N? Then you can Echo %name% to print the contents of that variable. To conditionally check for the content of that variable IF "%name%" == "y" (other dos commands go here...) Without the enclosing braces :-) I found it particularly usefull to start my jboss

Split String on every UpperCase Letter, String Modify Array and String Join the array as a single word.

2011-11-29T09:08:00.001-08:00

For example we have a string like “thisIsTheDay” http://stackoverflow.com/questions/3752636/java-split-string-when-an-uppercase-letter-is-found 1.String sample = “thisIsTheDay”;2.String[] sampleArray = sample.getChartType().split("(?=\\p{Lu})");3.sampleArray = (String[])ArrayUtils.removeElement(sampleArray, "this");4. String newStringName = StringUtils.join(sampleArray," "); Line 1: Declares a

Debug CSS

2011-11-18T14:57:00.001-08:00

Debug your CSS and layouts using Yahoo Debug CSS https://github.com/yahoo/debugCSS debugCSS is meant to be loaded on an existing page to highlight potentially broken, malformed or legacy (X)HTML. Visit the above link for more information.

Tool to bulk rename files in windows

2011-11-18T14:34:00.001-08:00

This is a very usefull to bulk rename files in a folder with most pattern and extension matching options. www.spacetornado.com/Renamer/

String substitution

2011-11-18T07:57:00.001-08:00

To substitute words in String. String exampleString = " There is %s disturbance in planet %s ";String newString = String.format(exampleString,new Object[]{"a","mars."});System.out.println(newString); Output : There is a disturbance in planet mars. Alternatively you can also use the MessageFormatClass http://download.oracle.com/javase/6/docs/api/java/text/MessageFormat.html

JSF Icefaces Accessibility

2011-11-10T09:18:00.000-08:00

We have a JSF based application, and this is our experience in making the website more accessible. Accessibility guidelines from the web. http://www.section508.gov/ http://www.w3.org/standards/webdesign/accessibility http://www-03.ibm.com/able/guidelines/web/accessweb.html http://www.w3.org/WAI/ http://www.w3.org/TR/WCAG/ Tools to check for accessibility Online website accessibility tool

CSS Cross browser shadow

2011-11-08T09:30:00.000-08:00

.shadow { -moz-box-shadow: 3px 3px 4px #000; -webkit-box-shadow: 3px 3px 4px #000; box-shadow: 3px 3px 4px #000; /* For IE 8 */ -ms-filter: "progid:DXImageTransform.Microsoft.Shadow(Strength=4, Direction=135, Color='#000000')"; /* For IE 5.5 - 7 */ filter: progid:DXImageTransform.Microsoft.Shadow(Strength=4, Direction=135, Color='#000000'); } http://robertnyman.com/2010/03

Parsing XML and iterating it using XPath

2011-10-31T13:13:00.000-07:00

How to parse XML from a string and iterate over a specific node name using Xpath DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); DocumentBuilder dBuilder = dbf.newDocumentBuilder(); String string = xmlBuffer.toString(); // not to parse a string you have to pass it in via stream Document doc = dBuilder.parse(new InputSource(new ByteArrayInputStream(string.getBytes("utf-8"))))

Xcelsius Send and Recieve XML with Servlet

2011-10-31T11:08:00.000-07:00

Xcelsius is a great tool to quickly wire up dashboards and reports without much coding. However there is the need to sometimes integrate it with dynamic data. You can create an XML data connection to query values from the database and associate it to your Xcelsius Model file. Following are the steps :- Create an XML data connection. Enter an URL for the xml data connection for

Works on My Machine

2011-10-31T09:45:00.000-07:00

http://www.codinghorror.com/blog/2007/03/the-works-on-my-machine-certification-program.html Post on "When developers say it worked

Icefaces Load Testing

2011-06-17T12:26:00.000-07:00

The problem that I faced was the ability to load test icefaces page, and I could not find an open source tool that helped me to load test icefaces. What other open source tools that are there for this purpose? Apache JMeter is fantastic for load testing, but for testing sophisticated fully ajax layouts like icefaces applications, not sure it is really easy to use JMeter. On the other hand

Oracle Certified Master Architect Java EE 5

2011-06-13T13:31:00.000-07:00

The following are some useful links for the oracle certified software architect master course. Certification Objectives: http://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage?page_id=326 Study Guide: http://java.boot.by/scea5-guide/ch01.html Java Ranch:http://www.coderanch.com/t/540130/java-Architect-SCEA/certification/Cleared-Part-Thanks-all Exam Tips:http://scea5-

Architecture

2011-06-01T11:02:00.000-07:00

Definition of Architecture. What is architecture? Excerpt from Sun Tone From this link The terms “system architecture” and “system design” are often used interchangeably, but in fact deal with two very different system engineering processes. System archi-tecture focuses primarily on the overall structure of a system, identifying major com-ponents and their relationships. The systems architect

Eclipse Ignore File From Output Folders

2010-11-30T14:38:00.001-08:00

Typically to quickly open a file in eclipse most of use the open resource dialog [CTRL+Shift+R] but sometime it also shows the files from other output folders, which is very irritating. A quick search on google pointed out to this link http://robmayhew.com/eclipse-ignore-folder/

Abstraction

2010-06-11T11:45:00.000-07:00

What is abstraction? I am not going to re-invent what this means. Just jotting down what it fundamentally means... and what we should keep in mind when we write code. Dictionary.com definition Abstraction, one of the listed meaning from that link that I like is "the act of considering something as a general quality or characteristic, apart from concrete realities, specific

Navigating the JAVA XML APIs Differences between JAXB, JAXR, JAX-RPX , JAXP and JAXM (yup JAXM!)

2010-05-25T10:07:00.000-07:00

What do the different JAVA XML APIs do? What is it's purpose that is what I am trying to understand, it is an incomplete post, but as and when I complete reading the remaining APIs, I will update the same post. JAXP JAXB JAX-RPC JAXM JAXR From wikipedia for JAXP It provides the capability of validating and parsing XML documents. The three basic parsing interfaces are:

Patterns and Pattern Languages - Architecture

2010-01-05T12:39:00.001-08:00

Notes from the "Roy Fielding's Dissertation"A design pattern is defined as an important and recurring system construct. A pattern language is a system of patterns organized in a structure that guides the patterns’ application. Both concepts are based on the writings of Alexander et al. [3, 4] with regard to building architecture.A pattern defines a process for solving a problem by following a

REST Notes.

2010-01-05T11:57:00.001-08:00

This blog entry are some personal notes from the original Roy Fielding's dissertation. REST Notes.a) "Form Follows Function" comes from hundred of years of design.b) The hyperbole of The Architects Sketch may seem ridiculous, but consider how often we see software projects begin with adoption of the latest fad in architectural design, and only later discover whether or not the system

Architecture Study Notes - Heuristics

2010-01-04T21:32:00.001-08:00

The following are notes from the book "The Art of Systems Architecting"By Mark W.Maier and Eberhardt RechtinHeuristicsDo not assume that the original statement of the problem is necessarily the best, or even the right one.In partitioning choose the elements so that they are independant aspossible; that is, choose elements with low external complexity andhigh internal complexity. The eye is the

JVM Bind Exception Port Already In Use (Windows)

2009-09-10T09:03:00.001-07:00

a) To find the application that is using the port in windows use this command from the prompt: netstat -a -n -o b) The next step is to kill that application or process that is using that port. Use the taskkill command from the prompt: taskkill /F /PID 1056 where 1056 is the process id.