In this session you will learn:
Including Files at Request Time: jsp:include
Understanding jsp:include vs. <%@ include … %>
Options for Deploying Applets
Using jsp:plugin
Attributes of the jsp:plugin Element
Using JavaBeans Components in JSP Documents
Background: What Are Beans?
Using Beans: Basic Tasks
Setting Simple Bean Properties: jsp:setProperty
JSP Page That Uses StringBean(Code)
Conditional Bean Operations
Sharing Beans in Four Different Ways
Session-Based Sharing: Code
Application-Based Sharing: Code
Application-Based Sharing: Result
For more information, visit this link: https://www.mindsmapped.com/courses/software-development/online-java-training-for-beginners/
The document provides an overview of key capabilities for building advanced user interfaces in Force.com, including:
1) Adding AJAX behavior to Visualforce pages through various components like actionFunction, actionPoller, and actionSupport.
2) Using partial page refresh with attributes like reRender to refresh parts of a page asynchronously.
3) Referencing static resources and templates to build reusable and modular Visualforce components.
4) Creating custom Visualforce components that can be reused across multiple pages.
5) Enabling public access to Visualforce pages through Sites and configuring authentication through portals.
The document provides an overview of server-side scripting technologies including CGI, Java servlets, and JSP. CGI scripts are executed on the web server with disadvantages of high server load. Servlets are Java programs that provide platform independence, performance, extensibility, and safety. JSPs simplify server-side scripting by allowing Java code to be embedded within HTML pages and are translated to servlets. The life cycle of a servlet including initialization, processing requests, and destruction is also summarized.
This document discusses different types of JSP elements including scripting elements, directives, and actions. It describes scripting elements like <% %> that contain Java code, directives like <%@page %> that provide page configuration, and actions like <jsp:include> that control page flow. Specifically, it outlines the page directive and its attributes, the include directive for code reusability, the taglib directive, and the param action for passing parameters between pages.
This document provides an introduction and overview of JSP (JavaServer Pages) technology. Key points include:
- JSP pages allow for mixing HTML and Java code to create dynamic web applications more easily than servlets alone.
- JSP pages are translated into servlets by the web container before execution.
- JSP offers implicit objects, standard actions, tags and directives to simplify coding dynamic content.
- Exception handling and lifecycle management are similar to servlets in JSP.
- Java beans can be used to encapsulate reusable data and logic in JSP applications.
Java Server Pages (JSP) allow mixing static content like HTML with server-side Java code to create dynamic web pages. JSP files are translated into Java servlets that generate HTML. Common tags in JSP include scriptlets for Java code, expressions for output, and directives for imports. JSP provides implicit objects like request and response to access HTTP session data and send responses.
Java Server Pages (JSP) allow Java code to be embedded within HTML pages to create dynamic web content. JSP pages are translated into servlets by the web server. This involves compiling the JSP page into a Java servlet class that generates the HTML response. The servlet handles each request by executing the jspService() method and produces dynamic content which is returned to the client browser.
The document provides an overview of key capabilities for building advanced user interfaces in Force.com, including:
1) Adding AJAX behavior to Visualforce pages through various components like actionFunction, actionPoller, and actionSupport.
2) Using partial page refresh with attributes like reRender to refresh parts of a page asynchronously.
3) Referencing static resources and templates to build reusable and modular Visualforce components.
4) Creating custom Visualforce components that can be reused across multiple pages.
5) Enabling public access to Visualforce pages through Sites and configuring authentication through portals.
The document provides an overview of server-side scripting technologies including CGI, Java servlets, and JSP. CGI scripts are executed on the web server with disadvantages of high server load. Servlets are Java programs that provide platform independence, performance, extensibility, and safety. JSPs simplify server-side scripting by allowing Java code to be embedded within HTML pages and are translated to servlets. The life cycle of a servlet including initialization, processing requests, and destruction is also summarized.
This document discusses different types of JSP elements including scripting elements, directives, and actions. It describes scripting elements like <% %> that contain Java code, directives like <%@page %> that provide page configuration, and actions like <jsp:include> that control page flow. Specifically, it outlines the page directive and its attributes, the include directive for code reusability, the taglib directive, and the param action for passing parameters between pages.
This document provides an introduction and overview of JSP (JavaServer Pages) technology. Key points include:
- JSP pages allow for mixing HTML and Java code to create dynamic web applications more easily than servlets alone.
- JSP pages are translated into servlets by the web container before execution.
- JSP offers implicit objects, standard actions, tags and directives to simplify coding dynamic content.
- Exception handling and lifecycle management are similar to servlets in JSP.
- Java beans can be used to encapsulate reusable data and logic in JSP applications.
Java Server Pages (JSP) allow mixing static content like HTML with server-side Java code to create dynamic web pages. JSP files are translated into Java servlets that generate HTML. Common tags in JSP include scriptlets for Java code, expressions for output, and directives for imports. JSP provides implicit objects like request and response to access HTTP session data and send responses.
Java Server Pages (JSP) allow Java code to be embedded within HTML pages to create dynamic web content. JSP pages are translated into servlets by the web server. This involves compiling the JSP page into a Java servlet class that generates the HTML response. The servlet handles each request by executing the jspService() method and produces dynamic content which is returned to the client browser.
This code is not thread-safe because the idNum field is being incremented without synchronization. If this JSP page was accessed concurrently by multiple requests, it could generate non-unique IDs by incrementing idNum multiple times between requests. To make it thread-safe, the idNum field would need to be declared as volatile or access to it would need to be synchronized.
JSP (Java Server Pages) allow Java code and special tags to be embedded in HTML files. This allows dynamic content to be generated for each user. JSP pages combine static markup with dynamic scripting elements. The JSP engine processes the pages on the server, converting them into servlets that generate HTML responses. Key benefits of JSP include easy maintenance, high performance, and platform independence since it is built on Java. Common JSP tags include directives, declarations, scriptlets, expressions, and actions. Directives provide instructions to the web container, while other tags allow embedding Java code and logic within HTML pages.
JSP stands for Java Server Pages and enables developers to embed Java code directly into HTML pages. JSP pages have a .jsp extension and allow for platform-independent development since Java code can run on any system. The JSP request is sent to the web server, which passes the .jsp file to the JSP servlet engine. If it is the first request, the JSP file is parsed into a servlet class file; otherwise, an instantiated servlet handles the request. The servlet output is then sent to the user's browser.
Java Server Pages (JSP) allow developers to create dynamic web content by mixing static HTML markup with Java code. JSP pages are translated into Java servlets, providing access to full Java functionality. Key elements of JSP include tags for scripting Java code directly in HTML pages, and directives that control page processing. JSP provides a standard way to create dynamic web applications and interfaces with databases using Java.
Java Server Pages (JSP) is a technology that allows developers to create dynamic web applications using Java code embedded in HTML pages. JSP pages are compiled into Java servlets, allowing dynamic content to be generated. JSP supports the use of scripting elements like expressions, scriptlets, and declarations directly in HTML pages to add dynamic functionality. Common elements like directives, actions, and standard tags provide functionality like including pages, passing parameters, and abstracting common patterns.
This slide is about basics of java servlet and java server page.
A basic example of JSP using multiple directives.
Further information of setting up and using of Apache Tomcat server.
basic introduction,architecture,life-cycle, difference b/w jsp and servlets and advantages and disadvantages of jsp.
For more information:-
ishan khan
email:- ishan0214@gmail.com
- JavaServer Pages (JSP) is a technology for generating dynamic web content that allows Java code to be embedded within HTML pages. The Java code is executed on the server to produce HTML that is then sent to the client.
- JSP pages make it easy to create dynamic web applications using simple scripting elements like expressions, scriptlets, and directives that are translated into Java servlets. They provide many predefined variables like request, response, and session to access data.
- JSP pages are compiled into Java servlet classes that operate in a request/response lifecycle like servlets. The servlet classes are stored and executed by the web container to handle requests and generate the HTML responses.
Laravel Framework is a popular PHP framework that is taking the web development community by storm. Laravel is the Most Starred PHP Framework on Github: more than 30 000 developers from all over the world (mostly from the USA) use it for custom software development.
In this Java JSP Training session, you will learn JSP. Topics covered in this session are:
• JSP vs Servlet
• LifeCycle of Servlet
• JSP Elements
• JSP Page directive
• Directives vs Action tags
For more information, visit this link:
https://www.mindsmapped.com/courses/software-development/jsp-and-servlets-designing-web-applications-with-java/
INTRODUCTION TO JSP,JSP LIFE CYCLE, ANATOMY OF JSP PAGE AND JSP PROCESSINGAaqib Hussain
This document provides an introduction to Java Server Pages (JSP) including the JSP life cycle and anatomy of a JSP page. It discusses how JSP pages allow embedding Java code in HTML elements to generate dynamic web content. When a request is made to a JSP page, it is processed by a JSP container that converts the page into a Java servlet, compiles the servlet, and executes the servlet to handle the request and generate the response. The document also describes how JSP pages combine static template text and dynamic JSP elements and the translation and request processing phases of handling JSP requests.
Servers - Apache Tomcat Server
Server-side scripts - Java Server Pages
The document discusses request/response protocols for client-side scripts versus server-side scripts like Java Server Pages. It explains how a server can interact with multiple concurrent clients through multi-threaded responses. HTML meta-tags can control the request/response interaction, and the file extension (.html vs .jsp) affects how the page is processed.
»Spring 3« ist da. Vieles ist geblieben, manches verschwunden, manches neu. Spring 3 verspricht eine verbesserte und dynamischere Konfiguration, einen leistungsfähigen und mächtigen REST-Support und viele kleine Verbesserungen. Parallel zu dem Spring 3-Release wurden auch andere Tools und Projekte aktualisiert, auf die wir ebenfalls einen Blick werfen wollen:
* Wichtige Änderungen
* Java Configuration
* Spring Expression Language
* Spring MVC und Rest
* Embedded Database
* SpringSource Toolsuite
* Spring Roo
* Grails
This document provides tips and best practices for staying sane as a Drupal developer. It discusses that 80% of building Drupal sites is configuration, while the remaining 20% requires customization. It emphasizes using Drupal APIs and hooks, playing well with contributed modules, and following coding standards and best practices like version control, automated testing and deployment, and documentation.
The document discusses Java Server Pages (JSP). Some key points:
- JSP is a server-side technology that allows creating dynamic web applications using Java code and HTML/XML pages.
- JSP pages can access the full Java API and are compiled into servlets, allowing them to connect to databases and integrate with other Java technologies.
- A JSP page consists of HTML tags, JSP tags, and scriptlets containing Java code. The life cycle of a JSP page involves compilation, initialization, execution, and cleanup similar to servlets.
- JSP offers advantages over plain servlets like easier maintenance and faster development since logic is separated from presentation.
The document discusses request/response protocols for client-side scripts, server-side scripts, and Java Server Pages. It explains how a server can interface with multiple clients simultaneously using threads. An experiment is described to demonstrate refreshing a JSP page from multiple browsers. The effect of file extensions like .html vs .jsp is also examined.
This document provides an overview of using JavaBeans in JSP pages. It discusses the benefits of beans, creating and accessing bean properties, and sharing beans across pages and servlets. Key points covered include using the jsp:useBean, jsp:setProperty and jsp:getProperty tags to work with beans without explicit Java code. It also discusses setting bean properties from request parameters and different scopes for sharing beans in multiple contexts.
Web Component Development Using Servlet & JSP Technologies (EE6) - Chapter 7 ...WebStackAcademy
Creating JavaServer Pages (JSP) files
Most types of JSP files can be created using the New JSP File wizard. To create a basic JSP file using the wizard, complete the following steps:
Create a dynamic Web project if you have not already done so.
In the Project Explorer, expand your project and right click on your WebContent folder or on a subfolder under WebContent. Note that if you choose any other folder in which to create the JSP, then it will not be included in the WAR file that is deployed to the server. In addition, link validation will not encompass files that are not under the WebContent folder.
From the context menu, select New > JSP. The New Java Server Page window appears with your folder selected
Type a file name into the File name field, making sure you include the jsp extension (jsp, jsv, jtpl, or jspx) in the file name.
You have several options for proceeding:
To accept the defaults associated with a new JSP file, select Finish.
To link to a file in the file system and specify path variables, select Advanced and then make your selections using the Browse and Variables buttons.
To use a template file for the initial content of your JSP page, select Next. The Select JSP Template window appears. Select the Use JSP Template check box, and then select one of the sample templates. You can also select the JSP Templates link to add or remove JSP templates to your list of templates.
This code is not thread-safe because the idNum field is being incremented without synchronization. If this JSP page was accessed concurrently by multiple requests, it could generate non-unique IDs by incrementing idNum multiple times between requests. To make it thread-safe, the idNum field would need to be declared as volatile or access to it would need to be synchronized.
JSP (Java Server Pages) allow Java code and special tags to be embedded in HTML files. This allows dynamic content to be generated for each user. JSP pages combine static markup with dynamic scripting elements. The JSP engine processes the pages on the server, converting them into servlets that generate HTML responses. Key benefits of JSP include easy maintenance, high performance, and platform independence since it is built on Java. Common JSP tags include directives, declarations, scriptlets, expressions, and actions. Directives provide instructions to the web container, while other tags allow embedding Java code and logic within HTML pages.
JSP stands for Java Server Pages and enables developers to embed Java code directly into HTML pages. JSP pages have a .jsp extension and allow for platform-independent development since Java code can run on any system. The JSP request is sent to the web server, which passes the .jsp file to the JSP servlet engine. If it is the first request, the JSP file is parsed into a servlet class file; otherwise, an instantiated servlet handles the request. The servlet output is then sent to the user's browser.
Java Server Pages (JSP) allow developers to create dynamic web content by mixing static HTML markup with Java code. JSP pages are translated into Java servlets, providing access to full Java functionality. Key elements of JSP include tags for scripting Java code directly in HTML pages, and directives that control page processing. JSP provides a standard way to create dynamic web applications and interfaces with databases using Java.
Java Server Pages (JSP) is a technology that allows developers to create dynamic web applications using Java code embedded in HTML pages. JSP pages are compiled into Java servlets, allowing dynamic content to be generated. JSP supports the use of scripting elements like expressions, scriptlets, and declarations directly in HTML pages to add dynamic functionality. Common elements like directives, actions, and standard tags provide functionality like including pages, passing parameters, and abstracting common patterns.
This slide is about basics of java servlet and java server page.
A basic example of JSP using multiple directives.
Further information of setting up and using of Apache Tomcat server.
basic introduction,architecture,life-cycle, difference b/w jsp and servlets and advantages and disadvantages of jsp.
For more information:-
ishan khan
email:- ishan0214@gmail.com
- JavaServer Pages (JSP) is a technology for generating dynamic web content that allows Java code to be embedded within HTML pages. The Java code is executed on the server to produce HTML that is then sent to the client.
- JSP pages make it easy to create dynamic web applications using simple scripting elements like expressions, scriptlets, and directives that are translated into Java servlets. They provide many predefined variables like request, response, and session to access data.
- JSP pages are compiled into Java servlet classes that operate in a request/response lifecycle like servlets. The servlet classes are stored and executed by the web container to handle requests and generate the HTML responses.
Laravel Framework is a popular PHP framework that is taking the web development community by storm. Laravel is the Most Starred PHP Framework on Github: more than 30 000 developers from all over the world (mostly from the USA) use it for custom software development.
In this Java JSP Training session, you will learn JSP. Topics covered in this session are:
• JSP vs Servlet
• LifeCycle of Servlet
• JSP Elements
• JSP Page directive
• Directives vs Action tags
For more information, visit this link:
https://www.mindsmapped.com/courses/software-development/jsp-and-servlets-designing-web-applications-with-java/
INTRODUCTION TO JSP,JSP LIFE CYCLE, ANATOMY OF JSP PAGE AND JSP PROCESSINGAaqib Hussain
This document provides an introduction to Java Server Pages (JSP) including the JSP life cycle and anatomy of a JSP page. It discusses how JSP pages allow embedding Java code in HTML elements to generate dynamic web content. When a request is made to a JSP page, it is processed by a JSP container that converts the page into a Java servlet, compiles the servlet, and executes the servlet to handle the request and generate the response. The document also describes how JSP pages combine static template text and dynamic JSP elements and the translation and request processing phases of handling JSP requests.
Servers - Apache Tomcat Server
Server-side scripts - Java Server Pages
The document discusses request/response protocols for client-side scripts versus server-side scripts like Java Server Pages. It explains how a server can interact with multiple concurrent clients through multi-threaded responses. HTML meta-tags can control the request/response interaction, and the file extension (.html vs .jsp) affects how the page is processed.
»Spring 3« ist da. Vieles ist geblieben, manches verschwunden, manches neu. Spring 3 verspricht eine verbesserte und dynamischere Konfiguration, einen leistungsfähigen und mächtigen REST-Support und viele kleine Verbesserungen. Parallel zu dem Spring 3-Release wurden auch andere Tools und Projekte aktualisiert, auf die wir ebenfalls einen Blick werfen wollen:
* Wichtige Änderungen
* Java Configuration
* Spring Expression Language
* Spring MVC und Rest
* Embedded Database
* SpringSource Toolsuite
* Spring Roo
* Grails
This document provides tips and best practices for staying sane as a Drupal developer. It discusses that 80% of building Drupal sites is configuration, while the remaining 20% requires customization. It emphasizes using Drupal APIs and hooks, playing well with contributed modules, and following coding standards and best practices like version control, automated testing and deployment, and documentation.
The document discusses Java Server Pages (JSP). Some key points:
- JSP is a server-side technology that allows creating dynamic web applications using Java code and HTML/XML pages.
- JSP pages can access the full Java API and are compiled into servlets, allowing them to connect to databases and integrate with other Java technologies.
- A JSP page consists of HTML tags, JSP tags, and scriptlets containing Java code. The life cycle of a JSP page involves compilation, initialization, execution, and cleanup similar to servlets.
- JSP offers advantages over plain servlets like easier maintenance and faster development since logic is separated from presentation.
The document discusses request/response protocols for client-side scripts, server-side scripts, and Java Server Pages. It explains how a server can interface with multiple clients simultaneously using threads. An experiment is described to demonstrate refreshing a JSP page from multiple browsers. The effect of file extensions like .html vs .jsp is also examined.
This document provides an overview of using JavaBeans in JSP pages. It discusses the benefits of beans, creating and accessing bean properties, and sharing beans across pages and servlets. Key points covered include using the jsp:useBean, jsp:setProperty and jsp:getProperty tags to work with beans without explicit Java code. It also discusses setting bean properties from request parameters and different scopes for sharing beans in multiple contexts.
Web Component Development Using Servlet & JSP Technologies (EE6) - Chapter 7 ...WebStackAcademy
Creating JavaServer Pages (JSP) files
Most types of JSP files can be created using the New JSP File wizard. To create a basic JSP file using the wizard, complete the following steps:
Create a dynamic Web project if you have not already done so.
In the Project Explorer, expand your project and right click on your WebContent folder or on a subfolder under WebContent. Note that if you choose any other folder in which to create the JSP, then it will not be included in the WAR file that is deployed to the server. In addition, link validation will not encompass files that are not under the WebContent folder.
From the context menu, select New > JSP. The New Java Server Page window appears with your folder selected
Type a file name into the File name field, making sure you include the jsp extension (jsp, jsv, jtpl, or jspx) in the file name.
You have several options for proceeding:
To accept the defaults associated with a new JSP file, select Finish.
To link to a file in the file system and specify path variables, select Advanced and then make your selections using the Browse and Variables buttons.
To use a template file for the initial content of your JSP page, select Next. The Select JSP Template window appears. Select the Use JSP Template check box, and then select one of the sample templates. You can also select the JSP Templates link to add or remove JSP templates to your list of templates.
Spring Framework is a popular and stable Java application framework that reduces dependencies and provides solutions to common coding problems like working with databases and web services. It uses dependency injection and aspect-oriented programming to increase modularity. The framework manages Java objects called beans, creating and injecting their dependencies based on bean definition files. This allows applications to access services without needing to understand their implementation.
JavaServer Pages (JSP) is a technology that allows developers to embed Java code in HTML pages to create dynamic web content. JSP pages combine HTML code with JSP actions and commands. At runtime, JSP pages are translated into Java servlets that generate the web page content dynamically. This provides better performance than CGI and allows embedding of dynamic elements directly into HTML pages.
This document discusses JSP and JSTL. It begins with an introduction to JSP, explaining that JSP is a server-side technology used to create dynamic web content by inserting Java code into HTML pages. It then covers some advantages of JSP over servlets, features of JSP like ease of coding and database connectivity, and how to run a JSP project in Eclipse. The document next discusses JSTL, the JavaServer Pages Standard Tag Library, which provides commonly used JSP tags. It classifies JSTL tags and provides examples. Finally, it discusses interfacing a Java servlet program with JDBC and MySQL to insert data into a database table.
JSP is a technology based on Java that produces dynamic web pages. JSP files contain HTML tags as well as special JSP tags where Java code is embedded. There are three main types of JSP elements - directives, scripting elements, and action elements. Directives provide information to the JSP engine, scripting elements contain Java code, and action elements perform tasks like accessing Java beans. Common implicit objects in JSP include application, page, session, and request objects. Java beans can be used with JSP through action tags like useBean, setProperty, and getProperty.
Mumbai Academics is Mumbai’s first dedicated Professional Training Center for Training with Spoke and hub model with Multiple verticles . The strong foundation of Mumbai Academics is laid by highly skilled and trained Professionals, carrying mission to provide industry level input to the freshers and highly skilled and trained Software Professionals/other professional to IT companies.
The document provides an overview of JavaServer Pages (JSP) technology. It discusses how JSP pages allow mixing static HTML content with server-side Java code to create dynamic web pages. JSP pages are compiled into Java servlets, which generate the HTML responses. The document covers JSP syntax elements like scriptlets, expressions, and directives that allow embedding Java code in JSP pages. It also discusses JSP lifecycle phases like translation, compilation, execution and cleanup. Common JSP actions like include, forward, plugin and working with JavaBeans are also summarized.
This document provides an overview of using Java Server Pages (JSPs), resources, and internationalization in SAP Portals. It discusses how JSPs are compiled to Portal Components and integrated with HTMLB tags. It describes two methods for JSP integration: JSPDynpage, which uses a controller class and beans, and JSPNative, which compiles a single JSP directly to a component. The document also reviews using different types of resources like images, scripts, and XML files from components and recommends a file structure. Finally, it mentions internationalization at a high level.
This document discusses the Model-View-Controller (MVC) architecture and how to implement it using servlets and JSP. It begins with an overview of MVC and the benefits of combining servlets and JSP. It then covers implementing MVC with RequestDispatcher to forward requests from servlets to JSP pages, and how to handle relative URLs and share data between the servlet and JSP using request, session, and application scopes. It provides examples of using beans to represent data and accessing bean properties in JSP.
- Hashtable is synchronized while HashMap is not, making HashMap better for non-threaded applications.
- Hashtable does not allow null keys or values, while HashMap allows one null key and any number of null values.
- The performance of HashMap is better than Hashtable as HashMap is unsynchronized.
The document provides an overview and examples of using JavaBeans in JSP pages. It discusses creating beans, setting and getting bean properties using jsp:setProperty and jsp:getProperty tags, and sharing beans across multiple pages using different scopes. Specific topics covered include understanding bean properties, building beans, setting properties explicitly and from request parameters, and sharing beans in the application scope.
JSP
The Anatomy of a JSP Page, JSP Processing, Declarations, Directives, Expressions, Code Snippets, implicit objects, Using Beans in JSP Pages, Using Cookies and session for session tracking, connecting to database in JSP.
The document outlines topics covered in a Servlet and JSP course, including introductions to servlets and JavaServer Pages, how to use MVC pattern, share information and access databases in web applications, and how to secure applications using features like filters and listeners.
The document outlines topics covered in a Servlet and JSP course, including introductions to servlets and JavaServer Pages, how to use MVC pattern, share information between servlets and JSPs, access databases, send email, and secure applications. It also covers advanced JSP concepts, using JavaBeans, JSP Expression Language, JSP Standard Tag Library, custom JSP tags, and working with listeners and filters.
Using JavaBeans in JSP can allow accessing and modifying Java objects without explicit Java code. Beans must follow conventions like having a no-arg constructor and getter/setter methods. JSP tags like <jsp:useBean>, <jsp:setProperty>, and <jsp:getProperty> can instantiate, set properties of, and get properties from beans. <jsp:useBean> instantiates a bean, <jsp:setProperty> sets properties by calling setters, and <jsp:getProperty> gets properties by calling getters. The scope attribute shares beans across pages/servlets by storing them in scopes like page, request, session, or application.
8.1 Write the opening and closing tags for the following JSP tag
types: Directive ,Declaration ,Scriptlet ,Expression .
8.2 Given a type of JSP tag, identify correct statements about its purpose or use.
8.3 Given a JSP tag type, identify the equivalent XML-based tags.
8.4 Identify the page directive attribute, and its values, that:
Import a Java class into the JSP page
Declare that a JSP page exists within a session
Declare that a JSP page uses an error page
Declare that a JSP page is an error page
8.5 Identify and put in sequence the following elements of the JSP page life cycle: Page translation ,JSP page compilation, Load class,Create instance,Call jspInit,Call _jspService ,Call jspDestroy .
8.6 Match correct descriptions about purpose, function, or use with any of the following implicit objects: request, response ,out ,session ,config ,application ,Page ,pageContext, exception .
8.7 Distinguish correct and incorrect scriptlet code for: A conditional statement , An iteration statement
9.1 Given a description of required functionality, identify the JSP page directive or standard tag in the correct format with the correct attributes required to specify the inclusion of a web component into the JSP page.
Boston 2011 OTN Developer Days - Java EE 6Arun Gupta
The document provides an overview of new features in Java EE 6, including lightweight profiles, annotation-driven programming, and ease of development enhancements like packaging EJBs in WAR files. It lists the Java EE 6 specifications, major changes to specifications like JSF 2.0 and EJB 3.1, and new specifications like CDI 1.0.
JSP provides implicit objects that represent request, response, and session objects. These objects have different scopes: page, request, session, and application. The implicit objects allow access to these server-side objects from JSP. JSP actions like include, forward, plugin are processed during request processing to include, forward to, or embed resources. The useBean, getProperty, and setProperty actions allow interacting with JavaBeans in JSP.
Internet and Web Technology (CLASS-14) [JSP] | NIC/NIELIT Web Technology Ayes Chinmay
The document provides information on the topics of Node.js, JSP, and Servlet from a course on Internet and Web Technology. It includes brief introductions and definitions of Node.js, JSP concepts like scripting elements, directives, implicit objects, and the JSP lifecycle. It also discusses using JSP scriptlet, expression, and declaration tags. Examples are given for requesting parameters in JSP and using implicit objects like request.
Generating the Server Response: HTTP Status CodesDeeptiJava
In this session you will learn:
Format of the HTTP response
How to set status codes
What the status codes are good for
Shortcut methods for redirection and error pages
A servlet that redirects users to browser-specific pages
A front end to various search engines
For more information, visit this link: https://www.mindsmapped.com/courses/software-development/online-java-training-for-beginners/
In this session you will learn:
background and goals of generic programming
basics of generic classes = parameterized types
generic methods for general algorithms
inheritance rules for generic types
bounded type parameters
generic code and the Java Virtual Machine
restrictions and limitations
wildcard types and wildcard type capture
For more information, visit this link: https://www.mindsmapped.com/courses/software-development/online-java-training-for-beginners/
In this session you will learn:
Objects
Collections
Garbage Collection
For more information, visit this link: https://www.mindsmapped.com/courses/software-development/online-java-training-for-beginners/
In this session you will learn:
Flow Control
Exceptions
Assertions
For more information, visit this link: https://www.mindsmapped.com/courses/software-development/online-java-training-for-beginners/
In this session you will learn:
Object Orientation
Overloading
Overriding
Constructor
For more information, visit this link: https://www.mindsmapped.com/courses/software-development/online-java-training-for-beginners/
This document provides an overview of access specifiers and modifiers in Java/J2EE programming. It discusses class modifiers like public, abstract, and final. It covers access modifiers for class members like private, protected, and public. Non-access modifiers for members such as synchronized, transient, and abstract are also explained. The document reviews modifiers for inner classes and provides examples of class, interface, and method declarations. It describes implementing interfaces and the main method. Key points about determining access to class members and additional programming concepts are also summarized.
In this session you will learn:
Introduction to Databases
Advantages of Database Systems
Database Languages
Distributed Database
Relational Database Model
Structured Query Language (SQL)
Basic Ingredients of JDBC
Supplying Values for Prepared Statement Parameters
For more information, visit this link: https://www.mindsmapped.com/courses/software-development/online-java-training-for-beginners/
In this session you will learn:
Threads
For more information, visit this link: https://www.mindsmapped.com/courses/software-development/online-java-training-for-beginners/
In this session you will learn:
Inner Classes
For more information, visit this link: https://www.mindsmapped.com/courses/software-development/online-java-training-for-beginners/
In this session you will learn:
The Need for JSP
The JSP Framework
Benefits of JSP
Advantages of JSP Over Competing Technologies
Setting Up Your Environment
Invoking Java Code with JSP Scripting Elements
Uses of JSP Constructs
Design Strategy: Limit Java Code in JSP Pages
Basic Syntax
Types of Scripting Elements
JSP Expressions
JSP/Servlet Correspondence
Predefined Variables
Controlling the Structure of Generated Servlets
Purpose of the page Directive
The import Attribute
The contentType and page encoding Attributes
For more information, visit this link: https://www.mindsmapped.com/courses/software-development/online-java-training-for-beginners/
In this session you will learn:
Streams
Using a stream
Manipulating the input data
Basics of the LineReader constructor
The LineWriter class
Flushing the buffer
PrintWriter
About FileDialogs
Typical FileDialog window
FileDialog constructors
Useful FileDialog methods I
Useful FileDialog methods II
Serialization
Conditions for serializability
Writing objects to a file
For more information, visit this link: https://www.mindsmapped.com/courses/software-development/online-java-training-for-beginners/
In this session you will learn:
Introduction
Architecture
The Persistence Lifecycle
Getting Started
Relationships and Associations
Advanced Mapping Concepts
Hibernate Queries
Hibernate Transactions
Hibernate Extensions
Hibernate Cache
For more information, visit this link: https://www.mindsmapped.com/courses/software-development/online-java-training-for-beginners/
In this session you will learn:
Java History
Features of Java
Java Versions
Application Area
For more information, visit this link: https://www.mindsmapped.com/courses/software-development/online-java-training-for-beginners/
Maruthi Prithivirajan, Head of ASEAN & IN Solution Architecture, Neo4j
Get an inside look at the latest Neo4j innovations that enable relationship-driven intelligence at scale. Learn more about the newest cloud integrations and product enhancements that make Neo4j an essential choice for developers building apps with interconnected data and generative AI.
Goodbye Windows 11: Make Way for Nitrux Linux 3.5.0!SOFTTECHHUB
As the digital landscape continually evolves, operating systems play a critical role in shaping user experiences and productivity. The launch of Nitrux Linux 3.5.0 marks a significant milestone, offering a robust alternative to traditional systems such as Windows 11. This article delves into the essence of Nitrux Linux 3.5.0, exploring its unique features, advantages, and how it stands as a compelling choice for both casual users and tech enthusiasts.
Full-RAG: A modern architecture for hyper-personalizationZilliz
Mike Del Balso, CEO & Co-Founder at Tecton, presents "Full RAG," a novel approach to AI recommendation systems, aiming to push beyond the limitations of traditional models through a deep integration of contextual insights and real-time data, leveraging the Retrieval-Augmented Generation architecture. This talk will outline Full RAG's potential to significantly enhance personalization, address engineering challenges such as data management and model training, and introduce data enrichment with reranking as a key solution. Attendees will gain crucial insights into the importance of hyperpersonalization in AI, the capabilities of Full RAG for advanced personalization, and strategies for managing complex data integrations for deploying cutting-edge AI solutions.
“An Outlook of the Ongoing and Future Relationship between Blockchain Technologies and Process-aware Information Systems.” Invited talk at the joint workshop on Blockchain for Information Systems (BC4IS) and Blockchain for Trusted Data Sharing (B4TDS), co-located with with the 36th International Conference on Advanced Information Systems Engineering (CAiSE), 3 June 2024, Limassol, Cyprus.
Removing Uninteresting Bytes in Software FuzzingAftab Hussain
Imagine a world where software fuzzing, the process of mutating bytes in test seeds to uncover hidden and erroneous program behaviors, becomes faster and more effective. A lot depends on the initial seeds, which can significantly dictate the trajectory of a fuzzing campaign, particularly in terms of how long it takes to uncover interesting behaviour in your code. We introduce DIAR, a technique designed to speedup fuzzing campaigns by pinpointing and eliminating those uninteresting bytes in the seeds. Picture this: instead of wasting valuable resources on meaningless mutations in large, bloated seeds, DIAR removes the unnecessary bytes, streamlining the entire process.
In this work, we equipped AFL, a popular fuzzer, with DIAR and examined two critical Linux libraries -- Libxml's xmllint, a tool for parsing xml documents, and Binutil's readelf, an essential debugging and security analysis command-line tool used to display detailed information about ELF (Executable and Linkable Format). Our preliminary results show that AFL+DIAR does not only discover new paths more quickly but also achieves higher coverage overall. This work thus showcases how starting with lean and optimized seeds can lead to faster, more comprehensive fuzzing campaigns -- and DIAR helps you find such seeds.
- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
Communications Mining Series - Zero to Hero - Session 1DianaGray10
This session provides introduction to UiPath Communication Mining, importance and platform overview. You will acquire a good understand of the phases in Communication Mining as we go over the platform with you. Topics covered:
• Communication Mining Overview
• Why is it important?
• How can it help today’s business and the benefits
• Phases in Communication Mining
• Demo on Platform overview
• Q/A
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024Neo4j
Neha Bajwa, Vice President of Product Marketing, Neo4j
Join us as we explore breakthrough innovations enabled by interconnected data and AI. Discover firsthand how organizations use relationships in data to uncover contextual insights and solve our most pressing challenges – from optimizing supply chains, detecting fraud, and improving customer experiences to accelerating drug discoveries.
GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...Neo4j
Leonard Jayamohan, Partner & Generative AI Lead, Deloitte
This keynote will reveal how Deloitte leverages Neo4j’s graph power for groundbreaking digital twin solutions, achieving a staggering 100x performance boost. Discover the essential role knowledge graphs play in successful generative AI implementations. Plus, get an exclusive look at an innovative Neo4j + Generative AI solution Deloitte is developing in-house.
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/building-and-scaling-ai-applications-with-the-nx-ai-manager-a-presentation-from-network-optix/
Robin van Emden, Senior Director of Data Science at Network Optix, presents the “Building and Scaling AI Applications with the Nx AI Manager,” tutorial at the May 2024 Embedded Vision Summit.
In this presentation, van Emden covers the basics of scaling edge AI solutions using the Nx tool kit. He emphasizes the process of developing AI models and deploying them globally. He also showcases the conversion of AI models and the creation of effective edge AI pipelines, with a focus on pre-processing, model conversion, selecting the appropriate inference engine for the target hardware and post-processing.
van Emden shows how Nx can simplify the developer’s life and facilitate a rapid transition from concept to production-ready applications.He provides valuable insights into developing scalable and efficient edge AI solutions, with a strong focus on practical implementation.
Pushing the limits of ePRTC: 100ns holdover for 100 daysAdtran
At WSTS 2024, Alon Stern explored the topic of parametric holdover and explained how recent research findings can be implemented in real-world PNT networks to achieve 100 nanoseconds of accuracy for up to 100 days.
Climate Impact of Software Testing at Nordic Testing DaysKari Kakkonen
My slides at Nordic Testing Days 6.6.2024
Climate impact / sustainability of software testing discussed on the talk. ICT and testing must carry their part of global responsibility to help with the climat warming. We can minimize the carbon footprint but we can also have a carbon handprint, a positive impact on the climate. Quality characteristics can be added with sustainability, and then measured continuously. Test environments can be used less, and in smaller scale and on demand. Test techniques can be used in optimizing or minimizing number of tests. Test automation can be used to speed up testing.
Essentials of Automations: The Art of Triggers and Actions in FMESafe Software
In this second installment of our Essentials of Automations webinar series, we’ll explore the landscape of triggers and actions, guiding you through the nuances of authoring and adapting workspaces for seamless automations. Gain an understanding of the full spectrum of triggers and actions available in FME, empowering you to enhance your workspaces for efficient automation.
We’ll kick things off by showcasing the most commonly used event-based triggers, introducing you to various automation workflows like manual triggers, schedules, directory watchers, and more. Plus, see how these elements play out in real scenarios.
Whether you’re tweaking your current setup or building from the ground up, this session will arm you with the tools and insights needed to transform your FME usage into a powerhouse of productivity. Join us to discover effective strategies that simplify complex processes, enhancing your productivity and transforming your data management practices with FME. Let’s turn complexity into clarity and make your workspaces work wonders!
HCL Notes and Domino License Cost Reduction in the World of DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model.
Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
These topics will be covered
- Reducing license cost by finding and fixing misconfigurations and superfluous accounts
- How do CCB and CCX licenses really work?
- Understanding the DLAU tool and how to best utilize it
- Tips for common problem areas, like team mailboxes, functional/test users, etc
- Practical examples and best practices to implement right away
Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
available on those devices, but many of the features provide convenience and capability but sacrifice security. This best practices guide outlines steps the users can take to better protect personal devices and information.
UiPath Test Automation using UiPath Test Suite series, part 5DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 5. In this session, we will cover CI/CD with devops.
Topics covered:
CI/CD with in UiPath
End-to-end overview of CI/CD pipeline with Azure devops
Speaker:
Lyndsey Byblow, Test Suite Sales Engineer @ UiPath, Inc.
2. Page 2Classification: Restricted
Agenda
• Including Files at Request Time: jsp:include
• Understanding jsp:include vs. <%@ include … %>
• Options for Deploying Applets
• Using jsp:plugin
• Attributes of
the jsp:plugin Element
• Using JavaBeans Components in JSP Documents
• Background: What Are Beans?
• Using Beans: Basic Tasks
• Setting Simple Bean Properties: jsp:setProperty
• JSP Page That Uses StringBean(Code)
• Conditional Bean Operations
• Sharing Beans in Four Different Ways
• Session-Based Sharing: Code
• Application-Based Sharing: Code
• Application-Based Sharing: Result
3. Page 3Classification: Restricted
• Format
– <jsp:include page="Relative URL" />
• Purpose
– To reuse JSP, HTML, or plain text content
– To permit updates to the included content without changing the main JSP
page(s)
• Notes
– JSP content cannot affect main page:
only output of included JSP page is used
– Don't forget that trailing slash
– Relative URLs that starts with slashes are interpreted relative to the Web
app, not relative to the server root.
– You are permitted to include files from WEB-INF
Including Files at Request Time: jsp:include
4. Page 4Classification: Restricted
• …
• <BODY>
• <TABLE BORDER=5 ALIGN="CENTER">
• <TR><TH CLASS="TITLE">
• What's New at JspNews.com</TABLE>
• <P>
• Here is a summary of our three
• most recent news stories:
• <OL>
• <LI><jsp:include page="/WEB-INF/Item1.html" />
• <LI><jsp:include page="/WEB-INF/Item2.html" />
• <LI><jsp:include page="/WEB-INF/Item3.html" />
• </OL>
• </BODY></HTML>
jsp:include Example: A News Headline Page (Main Page)
6. Page 6Classification: Restricted
• Use jsp:include whenever possible
– Changes to included page do not require any
manual updates
– Speed difference between jsp:include and the include directive
(@include) is insignificant
• The include directive (<%@ include …%>) has additional power, however
– Main page
• <%! int accessCount = 0; %>
– Included page
• <%@ include file="snippet.jsp" %>
• <%= accessCount++ %>
Which Should You Use?
7. Page 7Classification: Restricted
• Footer defined the accessCount field (instance variable)
•
• If main pages used accessCount, they would have to use @include
– Otherwise accessCount would be undefined
• In this example, the main page did not use accessCount
– So why did we use @include?
Understanding jsp:include vs. <%@ include … %>
8. Page 8Classification: Restricted
• Develop the applets with JDK 1.1 or even 1.02 (to support really old
browsers).
– Works with almost any browser
– Uses the simple APPLET tag
• Have users install version 1.4 of the Java Runtime Environment (JRE), then
use JDK 1.4 for the applets.
– Requires IE 5 or later or Netscape 6 or later
– Uses the simple APPLET tag
• Have users install any version of the Java 2 Plug-in, then use Java 2 for the
applets.
– Works with almost any browser
– Uses ugly OBJECT and EMBED tags
Options for Deploying Applets
9. Page 9Classification: Restricted
• Simple APPLET-like tag
– Expands into the real OBJECT and EMBED tags
• APPLET Tag
– <APPLET CODE="MyApplet.class"
WIDTH=475 HEIGHT=350>
</APPLET>
• Equivalent jsp:plugin
– <jsp:plugin type="applet"
code="MyApplet.class"
width="475" height="350">
</jsp:plugin>
• Reminder
– JSP element and attribute names are case sensitive
– All attribute values must be in single or double quotes
– This is like XML but unlike HTML
Using jsp:plugin
12. Page 12Classification: Restricted
• import javax.swing.*;
• /** An applet that uses Swing and Java 2D
• * and thus requires the Java Plug-in.
• */
• public class PluginApplet extends JApplet {
• public void init() {
• WindowUtilities.setNativeLookAndFeel();
• setContentPane(new TextPanel());
• }
• }
• Where are .class files installed?
jsp:plugin: Example (Java Code)
13. Page 13Classification: Restricted
• type
– For applets, this should be "applet".
Use "bean" to embed JavaBeans elements in Web pages.
• code
– Used identically to CODE attribute of APPLET, specifying the top-level
applet class file
• width, height
– Used identically to WIDTH, HEIGHT in APPLET
• codebase
– Used identically to CODEBASE attribute of APPLET
• align
– Used identically to ALIGN in APPLET and IMG
Attributes of the jsp:plugin Element
14. Page 14Classification: Restricted
• hspace, vspace
– Used identically to HSPACE, VSPACE in APPLET,
• archive
– Used identically to ARCHIVE attribute of APPLET, specifying a JAR file from
which classes and images should be loaded
• name
– Used identically to NAME attribute of APPLET, specifying a name to use
for inter-applet communication or for identifying applet to scripting
languages like JavaScript.
• title
– Used identically to rarely used TITLE attribute
Attributes of the jsp:plugin Element (Cont.)
15. Page 15Classification: Restricted
• jreversion
– Identifies version of the Java Runtime Environment (JRE) that is required.
Default is 1.2.
• iepluginurl
– Designates a URL from which plug-in for Internet Explorer can be
downloaded. Users who don’t already have the plug-in installed will be
prompted to download it from this location. Default value will direct user
to Sun site, but for intranet use you might want to direct user to a local
copy.
• nspluginurl
– Designates a URL from which plug-in for Netscape can be downloaded.
Default value will direct user to Sun site, but for intranet use you might
want local copy.
Attributes of the jsp:plugin Element (Cont.)
18. Page 18Classification: Restricted
• Scripting elements calling servlet code directly
• Scripting elements calling servlet code indirectly (by means of
utility classes)
• Beans
• Servlet/JSP combo (MVC)
• MVC with JSP expression language
• Custom tags
Simple
Application
Complex
Application
Uses of JSP Constructs
19. Page 19Classification: Restricted
• Java classes that follow certain conventions
– Must have a zero-argument (empty) constructor
• You can satisfy this requirement either by explicitly defining such a
constructor or by omitting all constructors
– Should have no public instance variables (fields)
• I hope you already follow this practice and use accessor methods
instead of allowing direct access to fields
– Persistent values should be accessed through methods called getXxx and
setXxx
• If class has method getTitle that returns a String, class is said to have a
String property named title
• Boolean properties use isXxx instead of getXxx
– For more on beans, see
http://java.sun.com/beans/docs/
Background: What Are Beans?
20. Page 20Classification: Restricted
• jsp:useBean
– In the simplest case, this element builds a new bean.
It is normally used as follows:
• <jsp:useBean id="beanName" class="package.Class" />
• jsp:getProperty
– This element reads and outputs the value of a bean property.
It is used as follows:
• <jsp:getProperty name="beanName" property="propertyName" />
• jsp:setProperty
– This element modifies a bean property (i.e., calls a method of the form
setXxx). It is normally used as follows:
• <jsp:setProperty name="beanName"
• property="propertyName"
• value="propertyValue" />
Using Beans: Basic Tasks
21. Page 21Classification: Restricted
• Format
– <jsp:useBean id="name" class="package.Class" />
• Purpose
– Allow instantiation of Java classes without explicit Java programming
(XML-compatible syntax)
• Notes
– Simple interpretation:
<jsp:useBean id="book1" class="coreservlets.Book" />
can be thought of as equivalent to the scriptlet
<% coreservlets.Book book1 = new coreservlets.Book(); %>
– But jsp:useBean has two additional advantages:
• It is easier to derive object values from request parameters
• It is easier to share objects among pages or servlets
Building Beans: jsp:useBean
22. Page 22Classification: Restricted
• Format
– <jsp:getProperty name="name" property="property" />
• Purpose
– Allow access to bean properties (i.e., calls to getXxx methods) without
explicit Java programming
• Notes
– <jsp:getProperty name="book1" property="title" />
is equivalent to the following JSP expression
<%= book1.getTitle() %>
Accessing Bean Properties: jsp:getProperty
23. Page 23Classification: Restricted
• Format
– <jsp:setProperty name="name"
property="property"
value="value" />
• Purpose
– Allow setting of bean properties (i.e., calls to setXxx methods) without
explicit Java programming
• Notes
– <jsp:setProperty name="book1"
property="title"
value="Core Servlets and JavaServer Pages" />
is equivalent to the following scriptlet
<% book1.setTitle("Core Servlets and JavaServer Pages"); %>
Setting Simple Bean Properties: jsp:setProperty
24. Page 24Classification: Restricted
• package coreservlets;
• public class StringBean {
• private String message = "No message specified";
• public String getMessage() {
• return(message);
• }
• public void setMessage(String message) {
• this.message = message;
• }
• }
• Beans installed in normal Java directory
– …/WEB-INF/classes/directoryMatchingPackageName
• Beans (and utility classes) must always be in packages!
Example: StringBean
25. Page 25Classification: Restricted
• <jsp:useBean id="stringBean"
• class="coreservlets.StringBean" />
• <OL><LI>Initial value (from jsp:getProperty):
• <I><jsp:getProperty name="stringBean"
• property="message" /></I>
• <LI>Initial value (from JSP expression):
• <I><%= stringBean.getMessage() %></I>
• <LI><jsp:setProperty name="stringBean"
• property="message"
• value="Best string bean: Fortex" /> Value after setting property with
jsp:setProperty:
• <I><jsp:getProperty name="stringBean"
• property="message" /></I>
• <LI><% stringBean.setMessage
• ("My favorite: Kentucky Wonder"); %>
• Value after setting property with scriptlet:
• <I><%= stringBean.getMessage() %></I>
• </OL>
JSP Page That Uses StringBean (Code)
26. Page 26Classification: Restricted
• You can use the scope attribute to specify additional places where bean is
stored
– Still also bound to local variable in _jspService
– <jsp:useBean id="…" class="…"
scope="…" />
• Lets multiple servlets or JSP pages
share data
• Also permits conditional bean creation
– Creates new object only if it can't find existing one
Sharing Beans
27. Page 27Classification: Restricted
• page (<jsp:useBean … scope="page"/> or
<jsp:useBean…>)
– Default value. Bean object should be placed in the PageContext object for
the duration of the current request. Lets methods in same servlet access
bean
• application
(<jsp:useBean … scope="application"/>)
– Bean will be stored in ServletContext (available through the application
variable or by call to getServletContext()). ServletContext is shared by all
servlets in the same Web application (or all servlets on server if no explicit
Web applications are defined).
Values of the scope Attribute
28. Page 28Classification: Restricted
• session
(<jsp:useBean … scope="session"/>)
– Bean will be stored in the HttpSession object associated with the current
request, where it can be accessed from regular servlet code with
getAttribute and setAttribute, as with normal session objects.
• request
(<jsp:useBean … scope="request"/>)
– Bean object should be placed in the ServletRequest object for the
duration of the current request, where it is available by means of
getAttribute
Values of the scope Attribute
29. Page 29Classification: Restricted
• Bean conditionally created
– jsp:useBean results in new bean being instantiated only if no bean with
same id and scope can be found.
– If a bean with same id and scope is found, the preexisting bean is simply
bound to variable referenced by id.
• Bean properties conditionally set
– <jsp:useBean ... />
replaced by
<jsp:useBean ...>statements</jsp:useBean>
– The statements (jsp:setProperty elements) are executed only if a new
bean is created, not if an existing bean is found.
Conditional Bean Operations
30. Page 30Classification: Restricted
• Using unshared (page-scoped) beans.
• Sharing request-scoped beans.
• Sharing session-scoped beans.
• Sharing application-scoped (i.e., ServletContext-scoped) beans.
Note:
– Use different names (i.e., id in jsp:useBean) for different beans
Sharing Beans in Four Different Ways