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From: http://sitestree.com/?p=2748
Categories:AngularJS, By Sayed Ahmed
Tags:jsf
Post Data:2015-11-02 00:19:07

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From: http://sitestree.com/?p=2750
Categories:AngularJS, By Sayed Ahmed
Tags:application, jsf
Post Data:2015-11-02 06:20:20

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• Introduction to JSF
• Create MyFaces Development Environment
• Lecture Notes of JSF and MyFaces
• MyFaces Wiki

From: http://sitestree.com/?p=5098
Categories:Java Short Notes
Tags:
Post Data:2009-12-30 08:31:19

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• In some cases, from the beans used in JSF applications, you will need to access the request parameters. For example, in the BusSearch.java, we accessed, the request parameters [Please check the previous JSF lesson].
• How to access: FacesContext context = FacesContext.getCurrentInstance();
• Some methods of FacesContext:
  • Map getApplicationMap()
  • String getInitParameter(java.lang.String name)
  • Map getInitParameterMap()
  • String getRemoteUser()
  • Map getRequestCookieMap()
  • Map getRequestHeaderMap()
  • Map getRequestHeaderValuesMap()
  • Map getRequestMap()
  • Map getRequestParameterMap()
  • Iterator getRequestParameterNames()
  • Map getRequestParameterValuesMap()
  • Map getSessionMap()
• Sample code:

  FacesContext context = FacesContext.getCurrentInstance();

• Map requestParams =    context.getExternalContext().getRequestParameterMap();

• String tripNum = (String) requestParams.get("tripNum");

From: http://sitestree.com/?p=4995
Categories:Java Short Notes
Tags:
Post Data:2007-08-18 13:22:28

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• Sample application for this article
• Video Tutorial for this article
• Pre-requisite: JSF Lesson 1 & 2
• Navigation: Two Types:
  • Static: The destination page is fixed
  • Dynamic: The destination page varies with the conditions
  • Static
    • Static: You provide a fixed value for the "action" attribute for a JSF event control/action element
    • That fixed value is mapped to the fixed destination page in the configuration file such as the faces-config.xml
    • If you check our previous lesson, the searchForms.jsp contains . In this line, the text 'action="submit"' defines the static navigation.
    • The navigation rule in the following text maps submit action to searchResults.jsp page [static/fixed mappping]
      /searchForm.jsp

      submit
      /searchResults.jsp

  • Dynamic Navigation
    • In this case, the action takes a dynamic value. All possible values are mapped into [different] destination pages. Hence, when the action gets a different value, the destination page is also different [unless mapped to the same destination page]
    • To get dynamic nature, the action is mapped to a value/property or a method of a managed bean. The property must be of String type. Also, the method must return String and must not take any parameter.
    • At the time, the action is executed [the button is pressed], corresponding property value is retrieved or the method is called to get value. This value is then matched with the navigation cases in faces-config.xml.
    • The user is then redirected to the destination of the mathching navigation case.
    • Example: Binding action to a value/method expression in jsp: . Here, search is a method in the bus bean. Hence, at the button click, the search method is executed. For example, it may get values such as success, noTrips
    • Mapping in faces-config.xml: success, and noTrips are mapped in the following navigation cases.
    • /searchForm.jsp

      success
      /searchResults.jsp

      noTrips
      /noTrips.jsp

• Navigation Rules:
  • If you observe the navigation rules above, you will notice elements. This is to mention, from where the action is generated.
  • : is the action message based on which flow is maintained
  • element provides the destination page
  • is optional. If you omit , then for all <from -outcome&gt message for the application, will be redirected to the related destination page. If all page refers to the same privacy policy file, this rule can be useful
  • Example:

    privacy-policy
    /WEB-INF/privacy.jsp

  • You can also redirect for the same message for a group of pages to the same destiation. Such as:
    /order/*
    success
    /WEB-INF/invoice.jsp
  • element: Consider a case, in the same page, in two command buttons, the actions are mapped to save and search methods. Both save and search methods can return success as the element. But, if you want them (two successes from the two methods) to go to two different destination pages, then element comes handy.
  • You can use element in the following way:
  • /searchForm.jsp

    #{bus.search}
    success
    /searchResults.jsp

    #{bus.save}
    success
    /searchForm.jsp

From: http://sitestree.com/?p=4994
Categories:Java Short Notes
Tags:
Post Data:2012-08-07 12:03:08

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• Target: Intermediate level web-developers (Java-platform).
• Sample application on Internationalization with JSF
• Video Tutorial on Internationalization with JSF
• To support Internationalization, in the web-pages, the text messages and the control texts make use of the keys for the values/messages. In the value fields, keys are mentioned/provided as the values. Later, based on the current locale/language, the keys are replaced with the appropriate texts for the current locale/language
• In some property files, keys and their corresponding values are listed
• For each language, one property file is provided
• The file names usually end with .properties
• Example: contents of the Property files:

  search.text.new=New SearchorderBtn.text = Confirm Order

• Wherever orderBtn.text is used for values, will be replaced with "Confirm Order"
• If the file name is messages.properties, the file can be loaded into the JSP pages as follows:

• Example use of the property file from JSP pages

• You are also required to list the default languages (that your application supports) in the faces-config.xml file

From: http://sitestree.com/?p=4998
Categories:Java Short Notes
Tags:
Post Data:2010-04-09 07:54:07

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• Sample application for JSF Data Type Converter
• Video Tutorial for JSF Data Type Converter
• Pre-requisite: JSF Lesson 1, 2, 3, 4
• JSF provides two different types of built-in data type converters such as: String and Date Conversion, Number and String Conversion.
• Related tags: f:convertDateTime, f:convertNumber, f:converter
• In our previous examples, we could accept departing and returning dates to be date/time types rather than string types [as expected]
• How to achieve:

• For other types of conversions, you have to use custom converters.
• To make use of the strategy, you have to write a class that will do the conversion work.
• Your class should implement: javax.faces.convert.Converter interface that has two methods that you must implement. One method takes input as String and returns an Object. Another method, takes an Object as the input and returns String.
• Methods

  Object getAsObject(javax.faces.context.FacesContext context,   javax.faces.component.UIComponent component, java.lang.String value)String getAsString(javax.faces.context.FacesContext context,   javax.faces.component.UIComponent component, java.lang.Object value)

• getAsObject: Returns an object
• getAsString: Returns String
• As you have access to the JSF context, and the corresponding user interface component in these methods- you will be able to greatly customize your converter
• How to use the custome converter:
  • Define a converter in the configuration file (faces-config.xml) as follows where TerminalConverter is your custom converter class:

    terminal.converter  net.justetc.jsf.TerminalConverter

  • From JSPs refer to a converter-id as defined in the configuration file. See example below:

  • 		  	or	

  • You can also, define/use the converter for all properties of a class such as Terminal as follows:

      net.justetc.jsf.Terminal  net.justetc.jsf.TerminalConverter

  • In this last scenario, whenever JSF identifies a Terminal type data it converts the data using the TerminalConverter class.

    In this example, as it encounters bus.origin to be of Terminal type, it will convert the origin to be a Terminal object though the user will just enter a String.

From: http://sitestree.com/?p=4996
Categories:Java Short Notes
Tags:
Post Data:2011-05-14 09:49:51

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• Target: Intermediate level web-developers.
• Sample application for this article
• Video Tutorial for this article
• In web-application development, validating user inputs takes much efforts. JSF has made validations much easier than usual
• JSF Built-in Validators:
  • validateDoubleRange: Checks that the value provided is a double value. You can also set a minimum and a maximum.
  • validateLongRange: Validates the input to be a long. It also has the optional minimum and maximum parameters.
  • validateLength: Validates the length of a string
  • Without the minimum and the maximum values these validators actually do nothing
• You can also enforce a value as follows. If no value is provided, an error message is displayed

• You can also create your own custom validator that should implement javax.faces.validator.Validator interface.
• You have to implement the validate() method: validate(FacesContext arg0, UIComponent arg1, Object arg2) throws ValidatorException
• In the error condition, you should throw ValidatorException from the validate method
• Then you need to register the custom validator in the faces-config.xml file using a id as follows:

      currency.validator    net.justetc.jsf.CurrencyValidator  

• From your JSP, you can refer to the validator as follows:

From: http://sitestree.com/?p=4997
Categories:Java Short Notes
Tags:
Post Data:2012-05-25 08:43:55

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From: http://sitestree.com/?p=4991
Categories:Java Short Notes
Tags:
Post Data:2012-10-30 13:33:53

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Codes for this article
Video Demonstration for this article

• Target: Intermediate level programmers and web-developers. Any programmer/web-developer can take a look.
• Pre-requisite: HTML, JSP, Servlet, Tomcat, J2EE, MVC, and JSF Introduction. Check the corresponding sections of this web-site, to have an idea on the required technology knowledge
• Pre-requisite: Download this sample JSF application
• Beans used by JSF enabled applications are called managed beans as they are created and managed by JSF
• JSF is based on the MVC architecture where beans provide the models
• To be used with JSF, a bean must have a no argument constructor. The bean can expose its properties with get or set methods for reading or writing from outside
• Beans can be used in two ways in JSF applications: The information required to create managed beans are provided in the configuration file (faces-config.xml), JSF uses value binding expressions or method binding expressions, to refer to the properties of the managed beans.
• Configuring Managed Beans
  • Beans are configured in the faces-config.xml file. The file is usually provided under WEB-INF folder. Though from the web.xml file (using the javax.faces.CONFIG_FILES context parameter), you can refer to any other file where the configuration is provided.
  • META-INF/faces-config.xml file can also be used
  • Multiple configuration files can also be used. The file names should be mentioned in the web.xml file.
  • Initialize Bean Properties
    • Tags such as, value, null-value, list-entries, map-entries can be used to initialize bean properties in the configuration file. value can be used to set String type parameter, null-value is used to set an Object type property to null, list-entries is used to initialize a List type property, map-entries is used to initialize a Map type property. Check this file for examples - the target audience I assume have the background to understand it just by checking
  • Accessing Bean properties
    • Bind managed bean methods to expressions in JSP pages
    • or : set flight property as the control is a JSF input control
    • or : Retrieve value from the origin property.
    • Access list property values: #{bus.times["1"]}
    • Access Map property values: flight.airportNames.key, flight.airportNames[key]
    • Similarly, you can also bind managed bean methods to expressions in JSP pages.

From: http://sitestree.com/?p=4993
Categories:Java Short Notes
Tags:
Post Data:2010-10-14 11:11:25

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  From: http://sitestree.com/?p=2754
Categories:Root
Tags:
Post Data:2015-10-25 05:23:26

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From: http://sitestree.com/?p=2756
Categories:Root
Tags:
Post Data:2015-10-25 05:24:40

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From: http://sitestree.com/?p=2752
Categories:Root
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Post Data:2015-10-25 05:21:54

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• By definition an enumerated type is a finite set of symbolic literals
• In Java an enumerated type is represented as first-class object.
• Enumerated type literals are allowed in case statements.
• The literals of an enumerated type may be of any valid Java identifier
• An interface may NOT contain any concrete method implementations
• An interface is NOT a class of any style.
• An interface defines a set of abstract methods that may have many implementations.
• An interface is NOT a member of a class.
• Both class associations and class compositions relationship may be of any multiplicity.
• compositions may also have navigation methods, but these methods must NOT pass references to the owned objects. This is usually achieved by passing back a copy of the object rather than the owned object itself. Composition implies that the owning object controls the life cycle of the owned object.
• Dependency:one object uses another object during computations.
• the portability of a Java application is NOT dependent
• upon whether information hiding was used. the class cannot protect bad assignments. For example, setting a negative value for an account balance.
• classes that do NOT support information hiding are NOT treated specially in Java
• Disadvantages of information hiding: Access to object
• attributes incur a runtime penalty.However, the Sun hotspot JVM usually can eliminate the added overhead by "inlining" the methods where they are called.
• It is time consuming to use methods to access object attributes rather than direct access.
• Information hiding does NOT restrict the reusability of a superclass.
• Interfaces are only contracts (declarations of public methods) and a program needs classes for actual behavior.
• NOT every class will have behavior that requires an explicit contract (interface).
• It is the reference variables to objects that need to be as generic as possible. This is the essence of the "program to an interface" principle.
• An interface cannot be instantiated using the new operator
• The minus symbol in a uml class diagram signifies private visibility
• the + symbol in a uml class diagram signifies public visibility
• encapsulation: all of its attributes be private and it provides appropriate public accessor and mutator methods.
• UML: attribute representation: - attr : int
• UML
  • ? is NOT a valid multiplicity indicator.
  • 0..* indicates zero or more multiplicity.
  • 0..1 indicates zero or one multiplicity, which is how you can represent an optional association.
  • ?..1 is NOT a valid multiplicity indicator.
  • ? is NOT a valid multiplicity indicator.
  • * is an abbreviation for 0..*.
  • M is NOT a valid multiplicity indicator.
  • ? is NOT a valid multiplicity indicator.
  • 0..* is exactly how to indicate zero or more.
  • M is NOT a valid multiplicity indicator.
• Enums and arrays make use of object references
• A source file can have zero package statements or one package statement.
• A source file automatically imports all classes of its package.
• java -version com.example.MyProgram: The Java interpreter prints the version information and exits.
• The Collections APIs contain interfaces for lists and sets.
• The Collections APIs are in the java.util package.
• the classes for TCP and UDP communication are contained in the java.net package.
• cell phone side of an application requires the micro edition and the server side with EJB requires the enterprise edition
• the J2SE platform has rich GUI capabilities, as well as IP communication capabilities allowing multiple, Internet-wide applications to exchange data.
• TCP/IP sockets are the basis of RMI.
• RMI may create new threads for each request.
• JMS is used to communicate with messaging services asynchronously.
• HTML does NOT provide interactive capabilities.
• HTML does NOT provide a rich set of UI components.
• HTML does provide navigation capabilities, such as hyperlinks.
• HTML does provide rich text formatting capabilities, such as tables and cascading style sheets.
• J2me include APIs for playing audio media.
• J2ME provides limited user interface components.
• J2ME applications usually execute on small devices with small screen resolution, which cannot support rich UI components.
• an Applet executes within a security sandbox that, by default, prohibits access to the user's filesystem.
• an Applet might fail to execute correctly (or at all) if the web browser does NOT have the appropriate JRE installed.
• an Applet does NOT have access to the web browser's cookie information.
• the default security sandbox does permit communication with the originating enterprise server.
• Applets execute in a security sandbox that does NOT permit access to files on the client system.
• Applets can be used to create animated games. However, Applets do NOT have access to gaming-specific APIs like J2ME applications do.
• Applets cannot connect to arbitrary Internet servers.
• Applets may connect to the server that delivered the Applet to access media files on that server.
• Applets can access other Applets on the same web page.
• Applets can access other Applets on the page through the AppletContext object supplied by the web browser.
• Swing (Richest GUI components in j2SE) has a broader GUI component set than AWT.
• MIDP is a J2ME (not J2SE) profile.
• JSF is a J2EE web-based UI component framework with only a limited component set.
• AWT has a more limited GUI component set than Swing
• SWT is NOT a standard J2SE technology.
• JSP is used to create dynamic HTML content. It does NOT handle business logic.
• JMS is the technology that handles asynchronous requests and performs the business logic of these requests.
• JDBC is a database communication technology and does NOT handle business logic.
• JNDI is a naming and directory service interface. It does NOT handle business logic.
• JNDI and JDBC support completely independent purposes in an application. JNDI is an interface to directory servers and JDBC is an interface to database servers.
• servlets and SQL support completely independent purposes in an application. Servlets respond to HTTP requests and SQL is used to communicate with relational databases.
• JavaMail uses SMTP (simple mail transfer protocol), which is used to send email from an application to users.
• JavaScript and EJB support completely independent purposes in an application. JavaScript provides interactivity to web pages and Enterprise JavaBeans provide business logic.
• JSP technology simplifies the creation of dynamic web pages.
• JSP technology is a server-side technology.
• JSP technology is NOT intended to be used to create business components.
• JSP technology is ideal for web designers who are NOT familiar with Java programming.
• JSP technology is NOT an integration technology.
• JSP is NOT an EJB technology
• servlets are NOT an EJB technology
• MDBs do NOT record client conversational state
• stateful session beans are used to record client conversational state
• stateless session beans do NOT record client conversational state
• entity beans are used to represent persistent data.
• message-driven beans handle asynchronous events.
• Session beans only handle synchronous events.
• session beans represent business processes and
• stateless session beans are client-independent. That is, they do NOT store conversational state.
• session beans do NOT exist in the web container
• stateless session beans are used to represent client-independent business processes.
• J2EE provides a rich and flexible programming model, but it is NOT simple
• J2EE infrastructure provides rich concurrency support in both the web and EJB tiers, which supports highly scalable application development.
• clustering is NOT directly supported by the J2EE specification. However, most vendor implementations of J2EE do support clustering.
• J2EE provides declarative transaction management.
• declarative transaction management is a required feature of the EJB container
• declarative user interface construction - is NOT part of the J2EE specification.

From: http://sitestree.com/?p=4909
Categories:Computer Game Design, Java Short Notes
Tags:
Post Data:2007-09-02 02:28:37

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• AWT
• Swing
• JSF
• Applet
• Midlet
• JDBC
• JSP
• Servlet
• Java Beans
• EJB
• J2ME
• RMI
• JNDI
• Network Programming
• XML processing
• Web Services and SOAP
• JavaFX
• Java Connector
• Java Mail
• Java AVK (Application Verification Kit)
• Java ACC
• Java Message Service API
• Java Persistence API
• Java Transaction API
• Java Transaction Service
• Hibernate
• Struts
• Spring
• Eclipse
• Netbeans IDE
• IntelliJ
• IBM Websphere RAD Workspace
• BEA Weblogic Workspace
• Tomcat
• JBOSS
• Websphere
• BEA Weblogic
• Sun Java Server
• Ant
• Maven

From: http://sitestree.com/?p=5031
Categories:Java Short Notes
Tags:
Post Data:2009-03-21 02:13:26

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• Java EE 5 (J2EE 5) uses XML deployment descriptors for the configuration of the web-applications and web-components.
• What Java EE provides? It provides the internal framework/structure/system level capability/system-level infrastructure to support large enterprise level applications with features like distributed database, distributed computing , security, and transaction management.
• J2EE also provides specifications for Containers, Connectors, Interfaces, Communications among different components for enterprise applications
• J2EE is J2SE based, it supports all of J2SE
• J2EE in addition to Swing and AWT introduces JSF for user interface creations
• Sun provides the J2EE specifications and a reference implementation. Anyone can re-implement the complete specification. Hence, if you develop applications based on the core J2EE, it should be compatible across different vendors who later re-implemented J2EE.
• However, J2EE does not cover 100% of the requirements of all types of enterprise applications, hence vendors usually add values/extra features to their implementations.
• J2EE provides multi-tier application development
• Elements of J2EE
  • Clients: Fat Clients: A console application, and JFC, Swing, AWT based GUI applications. Thin clients: Browser based client applications
  • Servers: Connect client components to the business logic.
  • Server side components: Web-Components: JSPs, Servlets. Business components: EJBs.
  • J2EE containers provide the support/framework/infrastructure for these server side components. Web Container contains JSPs/Servlets. EJB Container contains EJBs
• Some concepts in J2EE
  • Containers, JSF, JDBC, XML Support, Web-Services, Transaction Management, Security
  • Servlet: Mostly for Processing/calculations: From The clients, you can refer to a Servlet for example in HTML Form Actions. The Servlet runs in the server, does required processing and returns HTML web-page to the clients.
  • JSP: Mostly for user interfaces, can also include processing using Java codes
  • JSF: JSF is used to create rich user interfaces in conjunction with JSPs and Servlets.
  • JSF provides API based server side user interface creation
  • JDBC provides APIs to access relational databases. Enterprise applications very often will store information in databases. JDBC helps to access these information.
  • EJBs evolved on RMI's limitations to support enterprise applications. EJB components contain business logic.
  • EJBs are of three types: entity beans, session beans, message beans
• J2EE 5 XML Support Technologies
  
  • JAXP: DOM based processing. SAX: Stream based processing
  • JAXB: Mapping between XML and Java classes
  • JAXR: XML Registries
  • JAXM for messaging
  • JAX-RPC: XML based RPC
  • JAXR, JAXM, and JAX-RPC: provide support for SOAP and web-services
• Web-services: Here functions/operations are provided as web-based services. Others can call and make use of these services. Great for B2B communications and integrations.
• Web-services: Related concepts: WSDL: Describes the services provided - Web Service Description Language. Service Registries such as ebXML, UDDI. JAXR API can access these registries. SOAP: The protocol for communications (web-services).
• Transaction Management: Java EE including EJBs provides transaction management support.
• J2EE also provides security supports such as role-based authorization, both declarative and programmatic securities.

From: http://sitestree.com/?p=4990
Categories:Java Short Notes
Tags:
Post Data:2011-02-12 03:58:54

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• JSP Specification
• Servlet Specification
• Java Enterprise javabeans Specifications

From: http://sitestree.com/?p=4930
Categories:Java Short Notes
Tags:
Post Data:2009-10-10 10:47:36

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