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Topic: Java Beans

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	Java Beans
		Java beans are Java objects whose methods and properties can be determined by an application at run time and customize it’s properties using the methods available for that object.An application can determine the methods and properties available in an object using reflection.
		An Enterprise Java Bean is written as if it is a single threaded application.In fact,EJB classes can never be mutithreaded.They can not be threads themselves nor can they start any new thread.It is the job of the container to manage instances of EJB classes.
		Stateless session beans are shared beans that can be used by many clients.They need not know the conversational state of any transaction.That is the bean does not retain any state information between two successive methods calls invoked on it.This is similar to the familiar http protocol which does not maintain any state information.
	www.geocities.com /sundar_rajan_in/java/javabeans.html (1570 words)

	Enterprise Java Beans: Just the facts... (Site not responding. Last check: 2007-09-09)
		The Enterprise Java Beans specification is one of the several Java (An island in Indonesia south of Borneo; one of the world's most densely populated regions) API (additional info and facts about API) s in the Java 2 Platform, Enterprise Edition (additional info and facts about Java 2 Platform, Enterprise Edition).
		As these are merely Java interfaces and not concrete class (additional info and facts about concrete class) es, the EJB container is required to generate classes for these interfaces that will act as a proxy in the client.
		Beans in which their container manages the persistent state are said to be using Container Managed Persistence or CMP, whereas beans that manage their own state are said to be using Bean Managed Persistence.
	www.absoluteastronomy.com /encyclopedia/e/en/enterprise_java_beans.htm (1097 words)

	Enterprise JavaBeans - Wikipedia, the free encyclopedia
		Because these are merely Java interfaces and not concrete classes, the EJB container must generate classes for these interfaces that will act as a proxy in the client.
		Beans in which their container manages the persistent state are said to be using Container Managed Persistence (CMP), whereas beans that manage their own state are said to be using Bean Managed Persistence (BMP).
		The EJB Specification also defines a mechanism that lets enterprise Java beans be deployed in a similar manner regardless of the specific EJB platform that is chosen.
	en.wikipedia.org /wiki/Enterprise_Java_Beans (1033 words)

	EDM/2 - Grinding Java - Beans Components
		Java Beans were created by Sun to follow the success of OCX's (now renamed ActiveX) and VBX's (mostly obsolete).
		Beans are pluggable components used by visual development tools to allow a programmer to add functionality in a simple and visual way.
		Java beans allow lots of other interesting tricks such as a changing the behavior of beans during design time, and conventions regarding property changes.
	www.edm2.com /0510/grinding.html (1302 words)

	Java Beans.WhitePaper
		Java Beans allow developers to define independent components that can be used and re-used in a variety of combinations to compose new applications inside a variety of Browser and non-Browser environments.
		Java Beans are fully portable through the platform neutral Java Beans API and bridging libraries that will be part of the standard Java platform.
		Java Beans are compact, easy to build, fully portable, and re-useable in the broadest number of containers and environments.
	tec.uno.edu /George/Thesis/News/JavaBeans.WhitePaper.html (3402 words)

	Dr.Bob's JBuilder Machine - JBuilder Programming News, Articles, Books, Reviews and Tools
		We will build a bean that contains a number, a method to get the bean fired up by passing a new number to the bean and event that will be fired when the passed number is within a range of 5 of the number property of the bean.
		Next we add a method to this bean, that will take an int as a parameter and will fire an event in case this int is within the range of plus and minus 5 of the number property.
		Bean Info: For elements in a bean that don't follow the bean naming conventions, and therefore can't be surfaced with introspection, we can use a BeanInfo class to surface these elements manually.
	www.drbob42.com /JBuilder/jb210t.htm (10991 words)

	Developing Java Beans: Chapter 1. Introduction
		What this does mean is that Beans must allow their property values to be changed through some type of visual interface, and their methods and events should be exposed so that the development tool can write code capable of manipulating the component when the application is executed.
		Java Object Serialization is the best way to make sure that your Beans are fully portable, because you take advantage of a standard feature supported by the core Java platform.
		It is perfectly reasonable for a Bean to perform some function that does not require it to present an interface to the user; the Bean may be controlling access to a specific device or data feed.
	www.oreilly.com /catalog/javabeans/chapter/ch01.html (4401 words)

	Java Programmers FAQ (Site not responding. Last check: 2007-09-09)
		This is the role of "Java in a Nutshell", and "The Java Almanac".
		Java will never be well-supported under Win3.1 because Win3.1 lacks the basic features expected of a modern OS (primarily lengthy filenames and multithreading support).
		In Java 1.1, the local class will be used when the package name is not given; to use the imported class, you have to use the full package name.
	www.faqs.org /faqs/computer-lang/java/programmers/faq (16713 words)

	O'Reilly Media -- Bookstore: Developing Java Beans
		Java Beans is the most important new development in Java this year.
		Beans is the next generation of Java technology that not only adds features the language lacked, but also lets Java programs interoperate with a number of development environments.
		One important aspect of Java Beans is that components don't have to be visible.
	www.oreilly.com /catalog/javabeans (890 words)

	Java Grows Up: JNI, RMI, Beans & More
		An important concern for Java pioneers is that these improvements to the Java environment not break all of their existing code.
		Beans began in response to the problems of writing a visual application builder for Java, like the one in SGI's own Cosmo Code.
		An application builder for Java would be expected to work with and duplicate the behavior of the real Java objects that will exist in the completed application.
	www.disordered.org /Java-At-One.html (2458 words)

	Java Beans - Article - The Web Developer's Journal
		Java Beans are not a cure for all your programming ills, though.
		Beans are great for developing interfaces and basic applications, but for working with JDBC and SQL, text-based hand coding is your best bet.
		With Java Beans, Sun is proving that Java is poised to grow and become a powerful force in application development.
	webdevelopersjournal.com /articles/beans.htm (772 words)

	Java Beans - Article - The Web Developer's Journal
		Java Beans are not a cure for all your programming ills, though.
		Beans are great for developing interfaces and basic applications, but for working with JDBC and SQL, text-based hand coding is your best bet.
		With Java Beans, Sun is proving that Java is poised to grow and become a powerful force in application development.
	www.webdevelopersjournal.com /articles/beans.htm (772 words)

	The Business Technology News Network brought to you by TechWeb (Site not responding. Last check: 2007-09-09)
		The goal of the Java Beans initiative is to allow ISVs to develop reusable software components that end-users can then hook together using application builder tools.
		The first public specification for Java Beans, all 90 pages of it, was released recently and can be found in Acrobat and PostScript formats at http://splash.javasoft.com/beans.
		Java Beans will connect to and nest in each other using the portable Beans APIs, but they’ll also connect to native documents and containers using native component APIs, including ActiveX.
	www.techweb.com /activexpress/interest/djbeans.html (590 words)

	Shlurrrpp......Java learning Java : The Java tutorial for java programming
		And that is why something like Java is touted as the next Glasnost (well, unless you are a snoozebucket, you are probably aware of Java, the new language that is bowling the world over).
		First, to learn programming in Java, it is undoubtedly a prerequisite to have a passing knowledge of C++ or we'd rather you sit over the weekend with a load of beer and cheetos in the fridge and atleast a dozen aspirins in the drawer :).
		Secondly, the programs in Java here are explained in a simple, understandable manner and hence anybody expecting a display of rhetorical caliber is in for a disappointment of his lifetime.
	www.vijaymukhi.com /vmis/java.html (1432 words)

	java.beans (Java 2 Platform SE 5.0)
		A bean implementor who wishes to provide explicit information about their bean may provide a BeanInfo class that implements this BeanInfo interface and provides explicit information about the methods, properties, events, etc, of their bean.
		For example, a bean may contain a property of a special type that a bean editor may not know how to handle.
		The property values are treated as beans, and are recursively read or written to capture their publicly available state.
	java.sun.com /j2se/1.5.0/docs/api/java/beans/package-summary.html (1230 words)

	Java Beans (Site not responding. Last check: 2007-09-09)
		Java Beans is a specification for both using and building components.
		Bean properties can be examined and changed at design time (or run time) using the bean inspector shown at the top of this page.
		Beans are able to work in a RAD environment through the magic of Introspection and Persistence.
	webphysics.davidson.edu /WebTalks/AAPT_NewOrleans/Beans.html (150 words)

	Datamonitor - Java Studio creator picking up EJBs - News
		Sun Microsystems' drag-and-drop Java development environment is being updated for enterprise data integration with support for Enterprise Java Beans.
		The next full release of Java Studio Creator will be a "larger release" adding the ability to access data held in Enterprise Java Beans (EJBs), linking Java clients to servers.
		Java, specifically Java 2 Enterprise Edition - the umbrella specification for EJBs - is notoriously complex to work with, a fact that has helped slow adoption.
	www.datamonitor.com /industries/news/article/?pid=DFD5F821-1D05-4365-B645-ABBFFFB99FA9&type=NewsWire (358 words)

	Enterprise JavaBeans by Gopalan Suresh Raj (Site not responding. Last check: 2007-09-09)
		Any bean access is done through container-generated methods which in turn invoke the bean's methods.
		Each Session Bean is created and destroyed by the particular EJB Client that it is associated with.
		Each Entity Bean may however be shared by multiple EJB Clients.
	www.execpc.com /~gopalan/java/ejb.html (773 words)

	Building a bevy of beans - Java World
		As you will see, even the building-block beans are useful for other purposes, which demonstrates another benefit of the JavaBeans approach: As you develop with JavaBeans you build up a library of components that can be reused in future development efforts, saving the time it would have taken to extract or rewrite them.
		Building the AlarmBean bean As I mentioned earlier, the AlarmBean is an invisible (non-graphical) bean that represents an alarm.
		Most common beans are graphical components that constitute part of a user interface, however invisible beans may also be visually manipulated in a BeanBox in order to create the behind-the-scenes function of an application.
	www.javaworld.com /javaworld/jw-08-1997/jw-08-step.html (1373 words)

	Introduction to Java EE 5 Technology
		In the IDE, you can code enterprise beans just as you would code other Java classes, using code completion and editor hints to implement the correct methods and keep the classes in synch with their interfaces.
		The Java Persistence API can also be used outside of EJB components, for example, in web applications and application clients, and also outside the Java EE platform, in Java SE applications.
		Because entity beans are POJOs, they can be serialized and sent across the network to a different address space and used in a persistence-unaware environment.
	www.netbeans.org /kb/55/javaee-intro.html (1656 words)

	jGuru: EJB FAQ Home Page
		JDO is a persistence technology that competes against entity beans in enterprise application development.
		The EJB specifictation requires that the bean implementation must be single-threaded.
		The main difference is that in EJB 2.0, the persistence manager is responsible for mapping the entity bean to the database based on the newly introduced...
	www.jguru.com /faq/EJB (804 words)

	Java beans. Java. Tatet (Site not responding. Last check: 2007-09-09)
		MistyGrid is a Java Grid and is a JTable drop-in replaement component.
		Only the finest 'A' grade arabica beans make their journey from our plantations high on the Western Ghat Range in the heart of the Makonahalli region of southern India, to be uniquely roasted for a coffee taste unlike any other ever experienced.
		The term Java can refer to: * Java (island) - the main island of Indonesia * Java, Georgia - one of provinces of the Republic of Georgia (country)Georgia * Java coffee - a variety of coffee plant which originated on the island *...
	tatet.com /search-java_beans.html (380 words)

	Enterprise Component Broker
		All Beans on the server are client-callable and are dynamically downloaded to the client upon request, but depending on their attributes, could either be downloaded as a class, stub or by-value.
		The Beans deployed in the ECB environment are transparently connected via events and interfaces across different network nodes.
		As compared to JavaSoft's RMI the complete java object model is supported: constructors, static methods, static variables etc. The specifics of bean-to-bean interactions (copying by value or reference, shallow or deep, in/out parameters, call batching etc.) are defined via the Attribute Management Component.
	www.objs.com /workshops/ws9801/papers/paper038.html (1299 words)

	The Java Community Process(SM) Program - JSRs: Java Specification Requests - detail JSR# 295
		PropertyChangeListeners are used to detect changes in the source and target properties and to convert and validate data as it moves between the source and target.
		This JSR will reduce amount of tedious and error prone code Java Beans developers must write, by making additions to the Java Beans API that uplevel connecting pairs of Java Beans properties.
		A core part of this JSR is the ability to lookup properties from a bean.
	www.jcp.org /en/jsr/detail?id=295 (1105 words)

	Java Beans: Continued again
		Beans must be able to operate in a running application as well as inside a builder.
		The bean class itself does not refer to any of these auxiliary beanbox classes so that it is not dependent on them and they do not have to be shipped with the bean in finished products.
		Since Beans rely on their state, they need to be able to be persistent over time.
	www.ecst.csuchico.edu /~amk/foo/advjava/notes/beans3.html (2151 words)

	Free Java Tutorials & Guide \| Java programming source code
		Throughout the java pdf, simple examples are provided to illustrate the important concepts covered in the exam.
		This java I/O pdf is an overview of Java I/O and all the classes in the java.io package.
		This lesson is for Java programmers who want to learn about java design patterns as a means of improving their object oriented design and development skills.
	www.freejavaguide.com (960 words)

	Introducing Java Beans
		The basic idea of the Beans tutorial is to get you to the point where you can quickly create beans.
		You may want to write new beans from scratch, or you may want to take existing components, applets, or other classes and turn them into beans.
		It can be difficult to assimilate concepts and turn them into pragmatic programming techniques strictly by reading Beans source code, API interfaces, or even the Beans specification.
	www.science.uva.nl /ict/ossdocs/java/tutorial/beans/whatis (156 words)

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