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Learning Assembly language
Posted: May 7, 2013 in Assembly LanguageTags: Assembly, Assembly language, aviation, BASIC, gaming, Hello world program, High-level programming language, languages, Learning, programming, software, technology, transportation, videogames, x86
Programming is an art.
There are plenty of compilers around to program.The famous C,the beautiful Java,the useful HTML,the elusive oracle and the simple .net…
So why assembly language????
Those of you who ever had a go at cracking and all other stuff will have a readymade answer to it.No cracking without a crack at assembly language.
If u are not in the cracking Biz why do you need it?
No programmer is complete without mastery over assembly language..your program ruins slow or there is some deep glitch.you work on it day and night and still the glitch remains a glitch.here comes the assembly language.You analyse the processes and come at a diagnosis…
Assembly language makes you powerful.it is the base on which everything is built.
Without assembly language you will always remain a novice.whatever you build or achieve.
So lets start the learning process.
You must have heard that the—-
Assembly language is hard to learn and understand
Its difficult to debug
It’s a messy outfit
Why do you want to save a little space using assembly language when you have so much space?
Believe Me, learning assembly language is easier than most high level languages..
Once you learn assembly language everything else comes naturally..
Assembly language has several benefits:
• Speed. Assembly language programs are generally the fastest programs around.
• Space. Assembly language programs are often the smallest.
• Capability. You can do things in assembly which are difficult or impossible in HLLs.
• Knowledge. Your knowledge of assembly language will help you write better programs,
even when using HLLs.
LESSON1 – THE REGISTERS AND SEGMENTS
LESSON3 – INTERRUPTS LABELS AND DB
LESSON4 – STACK (PUSH,POP) AND MORE COMMANDS
LESSON7 – PROCEDURES AND MACROS
LESSON8 – EXTERNALS AND PUBLICS
LESSON9 – INCLUDING INFO IN THE EXE
LESSON10 – PORTS, TIPS, SUMMARY
Struts 2 Tiles Plugin Tutorial with Example in Eclipse
Posted: May 6, 2013 in Java Posts, Java Posts, Java TutorialsTags: Apache, Apache Struts, Data Formats, Enterprise Edition, JAR (file format), JAVA **********, languages, programming
Welcome to Part-4 of the 7-part series where we will go through different aspects for Struts2 Framework with some useful examples. In previous part we went through Struts2 Validation Framework. We saw how easy it is to integrate validation in your struts2 application.
In this part we will discuss about Tiles Framework and its Integration with Struts2. We will add Tiles support to our HelloWorld Struts application that we created in previous parts. I strongly recommend you to go through previous articles and download the source code of our sample application.
Struts 2 Tutorial List
- Part 1: Introduction to Struts 2 Framework
- Part 2: Create Hello World Application in Struts 2
- Part 3: Struts 2 Validation Framework Tutorial with Example
- Part 4: Struts 2 Tiles Plugin Tutorial with Example
- Part 5: Struts 2 Interceptors Tutorial with Example
- Part 6: Struts 2 File Upload and Save Example
- Part 7: Struts 2 Ajax Tutorial with Example
Introduction to Tiles 2
Nowadays, website are generally divided into pieces of reusable template that are being rendered among different web pages. For example a site containing header, footer, menu etc. This items remains same through out the website and give it a common look and feel. It is very difficult to hard code this in each and every webpage and if later a change is needed than all the pages needs to be modified. Hence we use templatization mechanism. We create a common Header, Footer, Menu page and include this in each page.
Tiles Plugin allow both templating and componentization. In fact, both mechanisms are similar: you
define parts of page (a “Tile”) that you assemble to build another part or a full page. A part can
take parameters, allowing dynamic content, and can be seen as a method in JAVA language. Tiles is a templating system used to maintain a consistent look and feel across all the web pages of a web application. It increase the reusability of template and reduce code duplication.
A common layout of website is defined in a central configuration file and this layout can be extended across all the webpages of the web application.
Our Application Layout
Our goal is to add Header, Footer and Menu to our StrutsHelloWorld application. Following will be the layout of the same.
Required JAR files
In order to add Tiles support to our Struts2 application, we will need few jar files. Following is the list of JARs in our example. Add these JARs in WEB-INF/lib folder.
Configuring Tiles in web.xml
To configure Tiles, an entry for listener has to be made in web.xml. Open the web.xml from WEB-INF folder and add following code into it.
01.<listener>02.<listener-class>03.04.org.apache.struts2.tiles.StrutsTilesListener05.</listener-class>06.</listener>07.<context-param>08.<param-name>tilesDefinitions</param-name>09.<param-value>/WEB-INF/tiles.xml</param-value>10.11.</context-param>The above code configure Tiles listener in web.xml. An input configuration file /WEB-INF/tiles.xml is passed as argument. This file contains the Tiles definition for our web application.
Create a file tiles.xml in WEB-INF folder and copy following code into it.
01.<?xml version="1.0" encoding="UTF-8" ?>02.03.<!--DOCTYPE tiles-definitions PUBLIC-->04."-//Apache Software Foundation//DTD Tiles Configuration 2.0//EN"06.<tiles-definitions>07.<definition name="baseLayout" template="/BaseLayout.jsp">08.<put-attribute name="title" value="" />09.10.<put-attribute name="header" value="/Header.jsp" />11.<put-attribute name="menu" value="/Menu.jsp" />12.13.<put-attribute name="body" value="" />14.<put-attribute name="footer" value="/Footer.jsp" />15.16.</definition>17.<definition name="/welcome.tiles" extends="baseLayout">18.<put-attribute name="title" value="Welcome" />19.20.<put-attribute name="body" value="/Welcome.jsp" />21.</definition>22.<definition name="/customer.tiles" extends="baseLayout">23.24.<put-attribute name="title" value="Customer Form" />25.<put-attribute name="body" value="/Customer.jsp" />26.27.</definition>28.<definition name="/customer.success.tiles" extends="baseLayout">29.<put-attribute name="title" value="Customer Added" />30.31.<put-attribute name="body" value="/SuccessCustomer.jsp" />32.</definition>33.</tiles-definitions>Here in tiles.xml we have define a template baseLayout. This layout contains attributes such as Header, Title, Body, Menu and Footer. The layout is then extended and new definitions for Welcome page and Customer page is defined. We have override the default layout and changed the content for Body and Title.
Creating JSPs
We will define the template for our webapplication in a JSP file called BaseLayout.jsp. This template will contain different segments of web page (Header, Footer, Menu etc). Create 4 new JSP files BaseLayout.jsp, Header.jsp, Menu.jsp and Footer.jsp and copy following content in each of them.
BaseLayout.jsp
01.<%@ taglib uri="http://tiles.apache.org/tags-tiles" prefix="tiles"%>02.<!--DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"-->03.05.<html>06.<head>07.<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">08.<title><tiles:insertAttribute name="title" ignore="true" /></title>09.10.</head>11.<body>12.<table border="1" cellpadding="2" cellspacing="2" align="center">13.<tr>14.15.<td height="30" colspan="2"><tiles:insertAttribute name="header" />16.</td>17.</tr>18.19.<tr>20.<td height="250"><tiles:insertAttribute name="menu" /></td>21.<td width="350"><tiles:insertAttribute name="body" /></td>22.23.</tr>24.<tr>25.<td height="30" colspan="2"><tiles:insertAttribute name="footer" />26.27.</td>28.</tr>29.</table>30.</body>31.</html>Header.jsp
1.<%@ page contentType="text/html; charset=UTF-8"%>2.3.<%@ taglib prefix="s" uri="/struts-tags"%>4.<h2>Struts2 Example - ViralPatel.net</h2>Menu.jsp
1.<%@ page contentType="text/html; charset=UTF-8"%>2.3.<%@ taglib prefix="s" uri="/struts-tags"%>4.<s:a href="customer-form">Customer</s:a>Footer.jsp
1.<%@ page contentType="text/html; charset=UTF-8"%>2.3.<%@ taglib prefix="s" uri="/struts-tags"%>4.Copyright © ViralPatel.netModifications in Struts.xml
In struts.xml we defined result tag which maps a particular action with a JSP page. Now we will modify it and map the result with Tiles. Following will be the content of struts.xml file.
01.<?xml version="1.0" encoding="UTF-8" ?>02.03.<!--DOCTYPE struts PUBLIC-->04."-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"06.07.<struts>08.<constant name="struts.enable.DynamicMethodInvocation"09.value="false" />10.11.<constant name="struts.devMode" value="false" />12.<constant name="struts.custom.i18n.resources"13.value="ApplicationResources" />14.15.<package name="default" extends="struts-default" namespace="/">16.<result-types>17.<result-type name="tiles"18.19.class="org.apache.struts2.views.tiles.TilesResult" />20.</result-types>21.<action name="login"22.class="net.viralpatel.struts2.LoginAction">23.24.<result name="success" type="tiles">/welcome.tiles</result>25.<result name="error">Login.jsp</result>26.</action>27.28.<action name="customer"29.class="net.viralpatel.struts2.CustomerAction">30.<result name="success" type="tiles">/customer.success.tiles</result>31.32.<result name="input" type="tiles">/customer.tiles</result>33.</action>34.<action name="customer-form">35.<result name="success" type="tiles">/customer.tiles</result>36.37.</action>38.</package>39.</struts>The struts.xml now defines a new Result type for Tiles. This result type is used in tag for different actions. Also note that we have define a new action customer-form. This is just an empty declaration to redirect user to Customer form page when she clicks Customer link from menu.
That’s All Folks
Compile and Execute the application in Eclipse and see that the header, menu and footer are properly applied.
Welcome Page with Tiles
Customer Page with Tiles
Customer Success Page with Tiles
