TEC|Rocks

Error in Struts2 OGNL expressions when migrating to Netbeans 7

2011-05-27T04:14:00.000-07:00

Encountered ":" at line 1, column 9. Was expecting one of: "}" ... "." ... "]" ... ">" ... "<" ... Netbeans 7 will show the above error in jsp pages when migrating to Netbeans 7.0 from lower version for the following type of syntax. list="#{true:'On',false:'Off'}" But it will not affect the output of the JSP page.But in Netbeans 7.0 that particular line is is flagged with an error. It is

Apache commons methods for generating random numbers in Java

2011-05-24T03:10:00.000-07:00

New class is introduced in apache.commons for generating random numbers by calling a method. These methods can be accessed by importing import org.apache.commons.lang.math.RandomUtils; These methods can be accessed by double rnddouble= RandomUtils.nextDouble(); float rndfloat= RandomUtils.nextFloat()); int rndfloat= RandomUtils.nextInt());

Adobe Released Flash Player 10.3 for Android mobiles

2011-05-20T02:24:00.000-07:00

Adobe released new Flash player version 10.3 for android based mobile phones. In Adobe Flash Player 10.3 for Android mobiles Adobe fixed more security holes and introduced additional enhancements to their Adobe Flash Player on the Android platform. On Android 3.1 devices, Adobe Flash 10.3 now supports hardware-accelerated videos to deliver smoother video playback.The latest version of Adobe

Greater than comparison in Freemarker tags

2011-05-11T00:50:00.000-07:00

In Freemarker we can test the lesser than condition directly . <#if value1 < valu2> value1 is less than value2 But we can't do the same for greater than (>) in freemarker tag like //Wrong method <#if value1 > valu2> value1 is greater than value2 The above one is wrong because the first occurrence of > sign will close the <#if condition. so for this we need to use

JSP Error : Attribute qualified names must be unique within an element

2011-05-04T01:03:00.000-07:00

Today i have upgraded my Netbeans IDE and Tomcat to latest versions ie Netbeans 7.0 and Apache Tomcat to Tomcat 7.0.12 . After successful migration of Netbeans and Tomcat to latest versions, i try to import and run my existing application but it fails to compile some JSP files. It throws the following errors. SEVERE: Servlet.service() for servlet jsp threw exception

Training video in Adobe site to learn Flex in a week

2011-05-03T00:03:00.000-07:00

Adobe proving the video tutorials in adobe site to learn Flex technology. Quote from the website: "Learn Flex in a week by going through this video training course. To maximize your learning, we recommend that you view the videos and complete the exercises in the order that they are listed. If you run into problems and have questions, you can ask a question on the Flex in a Week forum." Day 1

ORA-06575 Package or function is in an invalid state in Oracle Stored procedure

2011-05-02T01:47:00.000-07:00

Normally this "ORA-06575 Package or function is in an invalid state" error come when the stored procedure in invalid state.To make the stored procedure to valid state we need to recompile the particular stored procedure once again. To recompile the oracle procedure run this, SQL> alter procedure Procedure_Name compile; SQL> show errors This will give if any error in stored procedure you have

Access Java Static Methods in Struts2 Using OGNL

2011-05-01T01:10:00.000-07:00

We can access static methods and static constants of java class using OGNL tags in struts2 , as we do in normal jsp scriptlet. In OGNL @ tag is used to access static methods and varibles, here is the syntax toaccess the static method. @classname@methodname(arg)If using Struts 2.1.x means that you need additional parameter in struts.xml. You need to define the following parameter in struts.xml

Replace all characters with in two tags using Regular expressions in Java

2011-04-30T01:56:00.000-07:00

We can do the string functions like replace and find using simple regular expressions easily.Regular expression is easier to use with javascript replace function. Here are the regular expressions to replace the entire contents occur between two tags in Java. Here, for example the regular expression removes the content in <-! Tag -> and <-! End Tag ->. In java we need to use Pattern and Matcher

Adding date in Flex using Flex datepart

2011-01-12T23:40:00.000-08:00

By using Datepart in flex we can increase or decrease the particular part of the date in flex , Gareth suggested a dateAdd method to do this date addition in simple steps, using datepart we can add or subtract particular part of the date easily. By using datepart, adding 1 to datepart["date"] we get the next day date,datepart["week"] we get the next week date. Source Code : public static

VRule and HRule controls in Flex

2011-01-05T21:19:00.000-08:00

The VRule and HRule controls in Flex are act as a divider(separator) in a container. VRule control helps to draw a vertical line, this control creates a single vertical divinding line within a container. VRule controls are defined in flex in mxml tag Here is the example code for VRule control.

Applying style to Tooltip in Flex 4

2010-06-01T00:33:00.000-07:00

Applying style to Tooltips in Flex is more simpler than in Flex 3.In Flex4 Style tag is used to define styles for the application,Style tag is component of http://ns.adobe.com/mxml/2009 package.here is the sample style class to styleing tooltip component @namespace s "library://ns.adobe.com/flex/spark"; @namespace mx "library://ns.adobe.com/flex/halo"; mx|ToolTip {

Creating Flex Component Object when knowing only Class Name of the component

2009-08-29T00:25:00.000-07:00

If you need to get a reference to a class in ActionScript 3, but you know only the class name, then in that case you can use the "getDefinitionByName("class name string")" to create an instance of the class.getDefinitionByName method is available in flash.utils packageThis can be easily understandble by the simple example, import flash.utils.getDefinitionByName; var ClassReference:

Getting Currently Selected item from Flex Tilelist Component

2009-07-28T02:44:00.000-07:00

To day for some time i have struck with accessing the selected item in the tilelist component after trying out many methods.fianlly i got the access to selected component of list by using the itemclick event of tilelist component. In itemclick event we can get access to the selected item of the tile list .By event.currentTarget will can get the currently clicked component of the particular

Finding number of days between two dates in Flex

2009-04-17T00:24:00.000-07:00

Today i found an interesting post an Flexexamples that by using simple basic arithmetic subtraction operator we can find the difference between the two different dates.That is by subtracting one date from another date we can find out how many days are between those days.for example if you want to know the days between April 30-May28 means,just subtract April 30 from May 28 .here is the Flex code

Adobe Offerering Free Flex Builder 3 Professional IDE to Unemployed Developers,Students and Staff's of Educational Institutions

2009-04-07T05:57:00.000-07:00

Adobe now offers Free Flex Builder 3 Professional IDE to Unemployed Developers,Students and Staff's.To more details about this offering and get the IDE visit here :https://freeriatools.adobe.com/Adobe also set some eligibility criteria to get this offer,here is thatFor UnEmployed Developers :To receive the product under this program, you must attest to the fact that you are currently unemployed

Stlying Flex Alert Using simple CSS

2009-03-18T00:51:00.000-07:00

It is quiet easy to apply the style to get the good looking Flex Alert control . Playing with some simple CSS we can come up with more skinny Alert .here is one sample.In this i have written the css to change the style of Alert title ,Alert message font color,Alert border,styles of shadow,headers etc,. Css Source:Alert{color : #124332;background-color: #ffffff;header-colors : #243322, #243322;

New Flex SDK 3.3 Released

2009-03-07T00:11:00.000-08:00

Its time for an Update,Adobe released Flex SDK 3.3 .New Flex SDK 3.3 can be downloaded from here.http://www.adobe.com/products/flex/flexdownloads/Release Notes (with including instructions for updating with DMV 3.3) for Flex 3.3 release can be found here.Just take a look at the Adobe Bug System SDK: Fixed Bugs in 3.3 for the bugs fixed in the current release.

Trim or Limit the Axis label length of Flex-Charts using Actionscript

2009-02-28T04:26:00.000-08:00

One common problem that all the developers facing when creating flex applications with Flex Charting components is with displaying axis labels,when the axis labels exceed some limit then the label of next one one automatically wrap to next line.Some times if all the label text's length is large take 15 to 20 characters then that time the labels will overlap with each other and total chart will

Editing Vertical/horizontal Axis labels of Flex Charts Using labelrenderer

2009-02-25T05:18:00.000-08:00

There are many charting components are provided by Adobe with Flex Builder professional to develop rich Dashboard like applications.There are many provisions are given with those components to format/change the way of displaying the data in charts.There are also many direct properties are given with the charting components to made changes to the developers wish.When looking with the Axis labels

Reload Flex Application By itself using NavigateToURL and Externalnterface Methods

2009-02-21T11:21:00.000-08:00

With the simple logic we can allow a Flex swf reload by itself.By Loading Application.application.url using UrlRequest in the same page using _self attribute we can get refresh/reload effect to the Flex swf file.Here is lines that do the trick.var urlRequest:URLRequest = new URLRequest(Application.application.url);navigateToURL(urlRequest,"_self"); If you are using History management in your flex

New Adobe-AIR Marketplace Launched

2009-02-12T03:49:00.000-08:00

Adobe updated its AIR Marketplace with new features and an improved GUI look-and-feelbritepic_id="1045864"; britepic_src="http://4.bp.blogspot.com/_2gN4aH0XTrw/SZz0V7DeoMI/AAAAAAAAACA/itW0a5K7fVk/s400/abobe+air+marketplace.JPG";britepic_keywords="adobe%20air%20marketplace";britepic_show_ads=1;britepic_show_menu=1;britepic_href="http%3A//gnanz-flexworld.blogspot.com/2009/02/

Showing Current Date and Time in Flex

2009-02-04T04:59:00.000-08:00

There is no component to display the current time and date in Flex.we can achieve that by updating the time every seconds using Timer control.Download SourceFor that i have created new Label component that shows the current time and date(using new Date()) ,to make it dynamic i have implemented Timer function that will invoke every second and update the content of that label .i have defined timer

Date sorting in Flex Datagrid

2009-01-23T21:43:00.000-08:00

In Flex Datagrid sorting is good for the Strings and Numbers,but when its come for the Date objects its not so, Flex also treats the Date objects as Strings and doing the sorting accordingly.To sort this according to date you can use custom sortCompareFunction on that datagrid coloumn which converts the strings to dates ,This will make the date sorting to that coloumn Download the sourceMxml code

Modify Height and Width of Popup Date-Chooser-Calendar in Flex-DateField

2009-01-03T02:01:00.000-08:00

The DateField control is a text field that shows the date with a calendar icon.When clicking on this calendar icon the DateChooser calendar will open.When the DateChooser control is open, the user can scroll through months and years, and select a date. When a date is selected, the DateChooser control closes, and the text field shows the selected date.This DateChooser will open in its

Dynamic Itemrenderer With Plotchart

2008-09-24T23:49:00.000-07:00

Here is my first post in technical site.As i am currently working on Flex Project.i have decided to post the same here in Blogger.here i am giving the technique how to set the itemrenderer to Plotseries (PlotChart) at runtime.This toggle the itemrenderer between CircleItemRenderer and TriangleItemRenderer when clicking the Change Renderer buttonDownload the SourceActionscript Code: import