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Vendor : Oracle
Exam Code : 1Z0-899
Exam Name : Java EE 6 Web Component Developer(R) Certified Expert
Questions and Answers : 108 Q & A
Updated On : April 25, 2019
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1Z0-899 Java EE 6 Web Component Developer(R) Certified Expert

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1Z0-899 exam Dumps Source : Java EE 6 Web Component Developer(R) Certified Expert

Test Code : 1Z0-899
Test Name : Java EE 6 Web Component Developer(R) Certified Expert
Vendor Name : Oracle
Q&A : 108 Real Questions

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Oracle Java EE 6 Web

Goodbye, Java business edition. howdy, Jakarta EE | Real Questions and Pass4sure dumps

April 30, 2018 Alex Woodie

developers who use Java commercial enterprise version will be satisfied to know that the development and runtime platform is gaining new lifestyles as Jakarta EE. As a part of an settlement with Oracle, the tech big will quit handle over the platform to Eclipse foundation, which has big plans to remake enterprise Java for the rising cloud world.

seeing that it purchased solar Microsystems again in 2010, Oracle has been wholly in charge of Java. That comprises defining not just the core Java language, but having a big hand in every little thing else governed throughout the Java group method (JCP), together with the Java digital machine (JVM), the common version (JSE) runtime, and the Java business version (JEE) platform, which offered business-degree capabilities for running Java functions at scale, including use of net features and dispensed execution of code.

within the early 2000s, just before the sun acquisition, the tempo of innovation changed into heavy, as Java and JEE unfold throughout company the united states and the whole world. below the J2EE moniker, groups quite simply adopted loads of Java service Requests (JSRs), or JEE requisites, delivered under the enterprise edition umbrella. That covered JSRs like Java servlets, Java ServerPages (JSP), enterprise JavaBeans (EJBs), Java ServerFaces (JSF) J2EE Connector architecture (JCA), the Java Persistence API (JPA) and the Java Message carrier (JMS), amongst others.

youngsters, over the past few years, the exhilaration over JEE has waned and the tempo of change has slowed significantly. within the fall of 2017, Oracle determined that it had had ample and, at the urging of a group of vendors that protected IBM, pink Hat, and others, it agreed to relinquish manage of Java EE to the Eclipse foundation, which is the riding force in the back of the Java-based integrated building atmosphere (IDE) of the same identify.

Mike Milinkovich, govt director of the Eclipse groundwork, says the circulate is all about respiratory new existence into the Java business version platform.

“beneath Oracle, it turned into Oracle americans who had been defining the architecture and identifying what was going to be in the unencumber, and doing through a long way the bulk of the trouble in driving the specs ahead and riding the reference implementation ahead,” Milinkovich tells IT Jungle. “That’s what here is about: making a choice on up the pace of communique, listening to the neighborhood about what they desire us to construct, and having for the first time in a few years the ample supplies to in fact circulation forward on executing this. That’s to a big diploma what this is about.”

Getting the enterprise Java ball out of Oracle’s arms should aid align incentives for the other tech carriers working in the enterprise Java realm. “within the outdated world, Oracle turned into paying the paychecks for just about all and sundry involved with atmosphere the platform,” Milinkovich says. “Now it’s a a lot greater distinctive set of paymasters, if you wish to use that analogy, for who’s acutely investing their building materials into the platform.”

the first order of company at the Eclipse groundwork become to select a new identify, and after a vote of 7,000 people, the identify Jakarta EE become chosen. but don’t be fooled into you considering that “EE” stands for “enterprise edition,” Milinkovich says. “The EE doesn’t truly stand for commercial enterprise edition. It in reality doesn’t stand for anything else in any respect,” he says. “It’s just a part of the manufacturer.”

whatever the name, Jakarta EE’s connection to JEE and the entire Java stack is clear. Jakarta EE will proceed to run on precise of JSE. it is going to proceed to adhere to the JCP for specifications and it'll proceed to be developed as an open Java development package (JDK).

One issue so that it will alternate is that the Eclipse basis will create a completely new specification procedure for Jakarta EE, Milinkovich says. the new spec procedure could be the automobile wherein the neighborhood decides where to take Jakarta EE next. “It’s going to be a a whole lot greater of a collaborative and joint effort as opposed to a single dealer undertaking,” he says.

The Eclipse groundwork these days performed a survey to look the place the Jakarta EE community (nee J2EE neighborhood) desires the technology to go. in response to the Jakarta EE Developer Survey 2018, the three most crucial areas mentioned for development had been stronger aid for microservices, native integration with container know-how like Kubernetes and Docker, and a sooner tempo of innovation.

while new specs haven’t been set in stone, it’s clear what route the JEE neighborhood wishes to peer Jakarta EE going. traditionally, JEE turned into traditionally applied on-premise, but the paramount importance of helping emerging cloud paradigms came through loud and clear within the survey.

Jakarta EE Developer Survey 2018

“you have got a condition where 1,000 of the Fortune 1,000 use this technology for working their business these days,” Milinkovich says. “If we will give them with a migration path from what they have got these days to micro-capabilities architecture and the cloud-native capacity of their subsequent-generation applications — that’s going to help them make the change a whole lot quicker.”

It’s all about retaining the investment they’ve made no longer just in commercial enterprise Java functions, however in enterprise Java builders, Milinkovich says. “these days there are tens of millions of builders who recognize Java EE,” he says. “There lots of people who're very obsessed with this know-how, and if we can give them a platform during which they could deliver their potential forward and enable them to build applications the use of these new architectures with the abilities they have got . . . then that’s going to be a true advantage to those developers.”

As founding contributors of the Jakarta EE Working community, Oracle, IBM, crimson Hat, Fujitsu, Lightbend, Payara techniques, Pivotal, Tomitribe, and Webtide can have have an impact on over the course of this expertise. however the Eclipse foundation desires to motivate the whole Java neighborhood to get behind Jakarta EE.

“in case you believe concerning the undeniable fact that fairly tons the entire commercial enterprise have tremendous investment during this know-how platform and still have a chance to take part with the vendors and group in shaping its evolution, we feel that that’s a ravishing value proposition for those businesses,” Milinkovich says. “We’re going to be doing every thing we will to recruit those companies to no longer simply become contributors and interact with the governance of those projects, and aid put into effect the roadmap and share the future, however studying it’s in their optimal interest and their body of workers and builders to basically put americans into the open supply projects and actually interact at the undertaking-level in riding these technologies ahead.”

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Oracle bets Java EE future on rest APIs | Real Questions and Pass4sure dumps

Oracle is banking on relaxation and JSON to modernize Java EE for microservices and the cloud.

it could possibly appear like a while because rest stole thunder from soap as a mechanism for offering internet services communications. leisure, at the side of JSON and HTTP, proved a far more convenient means for supplying web features than soap, which has long been criticized for complexity.

speedy-ahead to the existing, and Oracle is now positioning relaxation and JSON as vital cogs in its Java EE improve plans. The enterprise began retooling Java EE for microservices and cloud platforms last yr, after group protests that Oracle had been neglecting the enterprise platform. The preliminary influence of those plans, Java EE eight, is due this October.

“When americans are constructing microservices at the present time, they do are usually rest-based, in order that tends to be concentrated around JAX-RS [Java API for RESTful Web Services], which is a key spec that's being upgraded,” Oracle’s Mike Lehman, vp of product administration, says.

This upgraded spec, JAX-RS 2.1, will focal point on quite a number capabilities, including Server-despatched pursuits (SSE) and integrations with JSON-B and Contexts and Dependency Injection (CDI). Java EE eight will characteristic JAX-RS 2.1, thereby facilitating rest communications, which Lehman says is the usual formulation coarse-grained microservices talk with one another, nearly by way of default.

A former Oracle Java EE evangelist who has remained a professional-EE activist is on board with rest as an anchor for microservices.

“rest is certainly a key part of most microservices,” says Reza Rahman, who heads up Java Guardians, a Java EE activity neighborhood, and works as a senior architect at consultant CapTech. “as a result, JAX-RS 2.1 -- the rest API in Java EE 8 -- has a sturdy set of advancements.”

relaxation and microservices for Java EE have each been given a thumbs-up in recent surveys of Java developers. Oracle late remaining year surveyed 1,700 clients and found leisure and HTTP2 have been the two most sought technologies for inclusion in Java EE. Oracle in December reported that many of the API work for these two technologies, including JAX-RS 2.1, become already finished. also, there is work underway on the Glassfish utility server, offering an EE reference implementation, to update a variety of Java Specification Requests.

In a collectively carried out survey, Java EE Guardians and DZone found that forty four % of respondents are seeking for standardized aspects equivalent to uber-JARs (that includes a Java application and dependencies), discovery, metrics, circuit breakers, and bulkheads for assist in architecting microservices. but 27 p.c felt Java is already smartly-suitable for building purposeful microservices. simplest 4 p.c noticed microservices as “purely hype.”

Java users also area excessive precedence on JSON-B, the Java API for JSON binding. The JSON information interchange structure gives the mechanism for formatting statistics on the wire, Lehman notes. To that conclusion, Java EE 8 will characteristic JSON-B 1.0, for binding a JSON object to the Java language, and JSON-P (JSON with Padding) 1.1, which gives a parsing API.

“These are typically a means for the programmer who’s writing a microservice to invoke different microservices and then process and work with the payload that's in that rest name,” Lehman says.

Java EE 8 also makes accommodations for HTTP2; whereas this specification isn't specially oriented toward microservices, it does deliver a standard HTTP2 API.

For the cloud, Java EE and Java itself are simply runtimes on a cloud platform, Lehman says. “They deserve to be capable of engage with usual cloud platform capabilities,” such as database access, he provides. 

Java provides programming APIs to engage with these, corresponding to leisure and JSON.

“What we want to do in Java EE 8, and with any sort of microservices platform, is make sure they can readily have interaction with cloud functions -- storage, persistence management and monitoring, etc,” Lehman says.

Oracle additionally has its sights set on Java EE 9, due in 2018, which is slated so as to add capabilities for scalable, unbiased capabilities and key-cost store aid. Rahman, although, wonders if perhaps Java EE 9 has the appropriate focus.

“for my part, the center of attention of Java EE 9 makes me ask yourself if we're about to prematurely standardize a couple of elements that should still now not yet be standardized,” Rahman says. He cites features similar to a new API to dynamically configure Java EE applications, native support for OAuth/OpenID connect, fitness verify functions, and Java SE 9-primarily based modularity.

while Lehman does accept as true with the programming concepts outlined through Rahman for EE 9, he reiterates that Oracle is focused on Java EE eight for the time being. “We’ve bought to buckle down and get EE eight out, so that's our simple focal point right now,” he says.

Java EE 7, the present release, grew to become obtainable in June 2013, including HTML5 assist. Java EE7 helps JAX-RS 2.0, for RESTful applications.

This story, "Oracle bets Java EE future on rest APIs" became originally published via InfoWorld.

Copyright © 2017 IDG Communications, Inc.

Java EE identify exchange To Jakarta EE | Real Questions and Pass4sure dumps


Java EE name alternate To Jakarta EE
  • with the aid of John k. Waters
  • 02/26/2018
  • it's official: the new identify for the technology formerly known as Java business version (and undertaking EE4J) is Jakarta EE.

    The Eclipse foundation's executive director Mike Milinkovich made the announcement nowadays on the existence at Eclipse weblog.

    practically 7,000 Java community members voted on the new identify, Milinkovich said, which changed into certainly one of two finalists to emerge from the groundwork's commercial enterprise Java rebranding manner. The different finalist, "commercial enterprise Profile," earned handiest 35.6% of the votes. The technique concluded final Friday.

    The groundwork reached out to the group for suggestions, after which "whittled this list right down to two names." The foundation cited that "Jakarta," which is the name of an Apache software basis mission retired in 2011, turned into used with the ASF's permission. Wayne Beaton, Director of Open source initiatives on the Eclipse basis, laid out the particulars of the preference manner in a GitHub put up.

    "The EE4J [Project Management Committee] considered a large number of components," Beaton wrote, "but within the conclusion the preference procedure conveniently boiled all the way down to identifying those names from the tips that The Eclipse basis can register and grasp as a trademark on behalf of the group."

    The query of what to name the Java EE eight-primarily based platform contributed to the foundation by Oracle closing yr—at present an Eclipse appropriate degree constitution assignment known as Eclipse commercial enterprise for Java (EE4J)—generated a robust response from the Java community, including severe opposition from some business Java group leaders. The Java EE Guardians posted an open letter to Oracle making their argument for retaining the name. among the signers was the father of Java himself, James Gosling.

    The emergence of "Jakarta" seemed a precious compromise to many within the neighborhood, and opposition softened all the way through the voting. David Blevins, founder and CEO of Tomitribe, brought up the benefits of the new identify in a Feb eight weblog publish: "whereas 'Jakarta EE' is not simplest remarkable since it can also be shortened to 'JEE,' referred to effortlessly as 'EE,' and provides us with a free circulate on any acronyms that have 'J' in them, it also has room to grow."

    "The naked word 'Jakarta' could be ours and in the future, we could create different issues beneath this manufacturer if we wanted," he introduced. "This may also consist of 'Jakarta ME,' 'Jakarta MicroProfile,' or a conference referred to as 'JakartaOne.' All of those names roll off the tongue, are instantly accepted and most importantly are community owned and free of any exterior licensing restrictions."

    In his submit, Milinkovich mentioned that permission to use the Jakarta EE trademark depends on "on passing an as-yet-to-be-described compatibility application run by means of," which is the working community riding the evolution and extensive adoption of technologies derived from or related to the Eclipse commercial enterprise for Java (EE4J) task.

    "[A]s of today," Milinkovich wrote, "it's preferred that for those who are generically regarding this open supply software platform that you just name it Jakarta EE as opposed to EE4J. EE4J, the Eclipse good-level mission, is the most effective identify we have had for a couple of months, however as we as a minimum tried to clarify, that become under no circumstances meant to be the company identify."

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    Java EE 6 Web Component Developer(R) Certified Expert

    Pass 4 sure 1Z0-899 dumps | 1Z0-899 real questions | [HOSTED-SITE]

    Java Certification Lists | real questions and Pass4sure dumps

    The Java Certifications offered by Oracle are categorized by Java SE, Web Services and Java EE.

    Java SE Certifications

    The Java SE Certifications are grouped based on versions like below:

    Java SE 8 (regular path)

    Oracle Certified Associate, Java SE 8 Programmer (Java SE 8 Programmer I | 1Z0–808)Oracle Certified Professional, Java SE 8 Programmer (Java SE 8 Programmer II | 1Z0–809)

    Java SE 8 (upgrade path)

    Oracle Certified Professional, Java SE 8 Programmer (Upgrade Java SE 7 to Java SE 8 OCP Programmer | 1Z0–810)Oracle Certified Professional, Java SE 8 Programmer (Upgrade to Java SE 8 OCP ( Java SE 6 and all prior versions) | 1Z0–813)

    Note that Java SE 7 certifications are retiring by December 31, 2018, so I have not listed any of these certifications here.

    Java EE Certifications

    Oracle Certified Master, Java EE 6 Enterprise Architect

    Oracle Certified Expert, Java EE 6 Enterprise JavaBeans Developer (Java EE 6 Enterprise JavaBeans Developer Certified Expert | 1Z0–895)

    Oracle Certified Expert, Java EE 6 JavaServer Faces Developer (Java EE 6 JavaServer Faces Developer Certified Expert | 1Z0–896)

    Oracle Certified Expert, Java EE 6 Java Persistence API Developer (Java EE 6 Java Persistence API Developer Certified Expert | 1Z0–898)

    Oracle Certified Expert, Java EE 6 Web Component Developer (Java EE 6 Web Component Developer Certified Expert | 1Z0–899)

    Oracle Certified Professional, Java EE 7 Application Developer (Java EE 7 Application Developer | 1Z0–900)

    Java EE Web Services Certification

    Oracle Certified Expert, Java EE 6 Web Services Developer (Java EE 6 Web Services Developer Certified Expert | 1Z0–897)

    Where to get Java Certification Study Materials?

    I prefer, MyExamCloud Study Plans and they are only one offer Practice Tests for all of these certifications. You can find the list of Java Certifications from this page.

    Pruning The Deadwood from Java EE | real questions and Pass4sure dumps

    A key reason for the success of the Java EE platform is its breadth of coverage, however the number of APIs and technologies that make up the specification also create issues for both developers and vendors wishing to adopt it. For new vendors wanting to build a Java EE application server, the complete specification represents a substantial barrier to entry reducing competition in the space. For new developers coming to Java EE, the vast numbers of APIs and acronyms can be intimidating. This is one of the reasons Java EE has a reputation for complexity, but it also means that new developers looking at the the platform don't always realise that it is as well suited for developing simple systems, such as basic CRUD web applications, as it is for building much more complex ones. One of the stated goals of Java EE 6 is to tackle these issues using three different techniques - profiles, pruning and extensibility.

    Profiles may either be a subset of Java EE platform technologies, or additional JCP technologies not part of the base Java EE platform, or both. They are helpful to a vendor since they provide a lower entry point for producing a Java EE compliant product, and are also useful for a developer looking to get started with the platform. As well as formalising this concept for enterprise Java, Java EE 6 introduces the first Java EE profile, the web profile, which was looked at in detail in a previous InfoQ article.

    Java EE 6 also starts the process of removing APIs that have been superseded or seen low levels of adoption amongst vendors and developers - a process referred to as pruning. It is performed as a multi-step process where a candidate is declared in one release and marked out as such in the Javadoc. Then, depending on community reaction, it may subsequently be relegated to an optional component in the next release.

    The early draft review of Java EE 6 suggested two pruning candidates. The first was JAX-RPC [JSR 101, the Java APIs for XML-Based RPC], which defines client APIs for accessing SOAP web services via RPC as well as techniques for implementing web service endpoints. JAX-RPC suffers from a number of limitations, notably that neither web service annotations nor injection are supported for JAX-RPC service endpoints and handlers. The API was effectively superseded by JAX-WS with the release of Java EE 5. The second pruning candidate in the early draft review was JAXR [JSR 93, the Java API for XML Registries]. This provides a standard way of accessing different kinds of XML registries for building, deploying and discovering Web Services and includes bindings for both the ebXML Registry and the UDDI Registry v2.0 specifications. JAXR hasn't been superseded but has seen very limited adoption.

    The public draft review of EE 6 has added two more APIs to the pruning list. EJB 2.x Container Managed Persistence which is now effectively replaced by the Java Persistence API [originally defined as part of JSR 220, Enterprise JavaBeans 3.0] and Java EE Application Deployment [JSR 88] which defines the interfaces between the run-time environment of a deployment tool and plug-in components provided by a Java EE application server. This API theoretically allows any Java EE application to be deployed into any Java EE compatible environment using the same deployment tool, but regrettably has been poorly supported by vendors.

    In a similar vein to JSR 88, the Expert Group is also considering removing Java EE Management [JSR 77] which provides APIs for management tools to query a Java EE application server to determine its current status, applications deployed, and so on. Server management tools built using these APIs work in a cross-vendor manner providing system administrators with a means to switch application servers without changing management tools and processes, or to manage a network of multiple Java EE servers consisting of multiple vendor implementations of the platform. Like JSR-88 this API has suffered from poor vendor support.

    As the APIs are trimmed down, the Expert Group hopes to reduce the need for APIs that may have limited appeal by providing more extensibility points within the specification. These interfaces and plug-in points should make it easier to create technologies that extend that platform whilst remaining well integrated into it, and may help the specification itself regain some of its focus.

    Java EE 6 Overview | real questions and Pass4sure dumps

    The details of Java EE 6 have been getting hashed out for quite a few months in the JSR 316 expert group, which I am part of. The goal of this article is to give you an overview of the changes in Java EE 6 as well as encourage your feedback. Besides the work of the JSR 316 expert group itself, I’ll also discuss the JSRs that are likely to comprise this release of the platform. Java EE 6 has now released its public review draft and is well on the road to be finalized after the official public review date is over on February 23. This means that this is the best time to provide feedback but providing feedback soon is very important.

    A Quick Glance Back

    Java EE 5 was a remarkable transformation for a mature, widely deployed, well supported server-side development platform. EJB 3.0 was introduced as the reengineered business component development model, the aging EJB 2.x Entity Bean model was replaced by JPA as the persistence paradigm, JSF was introduced as the standard presentation tier framework and JAX-WS 2.0 replaced JAX-RPC as the SOAP web services API. The focus of Java EE 5 was squarely on reducing complexity by embracing the concepts of annotations, POJO programming, zero-configuration systems and freedom from XML hell. Despite the reservations around Java EE, perhaps the best testament to the fact that Java EE 5 has succeeded is the many folks that say they have considered adopting Java EE for the first time because of these changes. A large number of these folks also comment on how surprisingly streamlined the Java EE programming model feels.

    A Bird’s Eye View

    Java EE 6 is another big step in the journey towards the ideal of a simple, streamlined and well-integrated platform. Java EE 6 also includes a rich set of innovations best reflected in the technologies that comprise the platform including brand new APIs like WebBeans 1.0 and JAX-RS 1.1 or even mature APIs like Servlet 3.0.

    Besides a few relatively minor changes such as standardizing global JNDI naming (which I won’t cover here), the major themes for JSR 316 are pruning and profiles. Let’s take a quick look at these changes. For further details, I encourage you to check out the public review draft. It is available here:

    Pruning the Dead Wood

    The first release of Java EE was in 1999. By standards of the hypercompetitive technology industry, that’s nothing short of a lifetime. During this span, Java EE has only grown. As a result, the platform is now weighted down with some dead wood in the shape of APIs that are outdated, not well supported or not widely deployed. Java EE 6 begins the essential process of carefully pruning these APIs to make the platform more lightweight and to make room for healthier growth. Table 1 shows the APIs that are currently on the chopping block, along with an explanation of why.


    Reason for Pruning


    JAX-RPC was an early attempt at modeling SOAP web services as RPC calls. Web services have since grown out of being an RPC model. The much more robust, feature-rich and popular JAX-WS API effectively supercedes JAX-RPC.

    EJB 2.x Entity Beans CMP

    The complex, heavyweight and overkill model of EJB 2.x Entity Beans has been replaced by the popular, lightweight, POJO based JPA persistence model introduced as part of EJB 3 in Java EE 5.


    JAXR is one of the few Java APIs for interfacing with UDDI registries. Unfortunately, since UDDI is not widely used, JAXR has very limited adoption, deployment and vendor support.

    Java EE Application Deployment (JSR-88)

    JSR 88 was an attempt at developing deployment tools that work across application servers. Unfortunately, this API has never gained much vendor support.

    Java EE Management (JSR-77)

    Similar to JSR 88, JSR 77 was an attempt at creating application server management tools that work in a cross-vendor manner. This API has not been well supported either.

    Table 1: APIs Pruned in Java EE 6

    “Pruning” an API essentially means that an application server vendor need not support these technologies, although some larger vendors will probably continue supporting the pruned APIs for a period time.

    What are your thoughts on the pruning process? Is it too aggressive? Too conservative? Do you use any of the APIs above? Are there others APIs you believe should also be pruned?

    Profiles: Different Strokes for Different Folks

    One of the major criticisms of Java EE has been that it is simply too large. Indeed, a majority of small to medium range Java web applications do not utilize the full Java EE stack. One can imagine the same to be true of SOA applications that would use features like messaging, transactions, persistence and web services but have no need for presentation tier technologies like JSP or JSF.

    Profiles are designed to address this issue. Profiles are essentially sub-sets of Java EE APIs geared towards a particular class of applications in mind. For example, the proposed Java EE Web Profile will only include APIs that are likely to be used in most Java web applications. As such, the idea of Profiles has been used successfully in the standards world for a relatively long time. As you might already know, Java ME supports the idea of Profiles geared towards particular device runtime environments. Likewise, Profiles are used to better organize the increasingly complex world of web services standards such as the WS-I Basic Profile, the WS-I Basic Security Profile and the like.

    Although Java EE 6 defines the rules for creating new Profiles through separate JSRs, only one Profile, the Web Profile is included in platform this time. Table 2 lists the APIs that are included in the Web Profile as opposed to the full platform:


    Web Profile

    Full Profile

    Servlet 3.0

    JSP 2.2

    JSTL 1.2

    EL 1.2

    JSF 2.0

    WebBeans 1.0 (?)

    EJB 3.1 (Lite)

    EJB 3.1 (Full)


    JPA 2.0

    JTA 1.1

    JMS 1.1


    JavaMail 1.4


    JAX-WS 2.2


    JAX-RS 1.1


    JAXB 2.2


    JACC 1.0


    JCA 1.6


    Table 2: Java EE 6 Web Profile

    The reason the WebBeans entry in the table has a question mark is that it is still not certain whether WebBeans should be included in Java EE 6. The major concerns around WebBeans center on how it fits into Java EE overall, as well as whether the JSR technical content is modularized correctly. What are your thoughts on this? In case you are unfamiliar with WebBeans, I’ll talk about it in a bit more detail in the following sections. Should WebBeans be included in Java EE 6 in its current form? If not, what changes could be made to the JSR? Note also that EJB Lite, and not the full version of the EJB specification is included in the Web Profile. I’ll describe EJB Lite in greater detail shortly too.

    What do you think about the idea of Profiles in Java EE? Would lighter weight application servers conforming to a Profile be useful to you? How about the contents of the Web Profile? Is it too minimal? Too large? Just right? Is one initial Profile (in addition to the full platform) sufficient or should other Profiles be defined in Java EE 6? Should an even more minimal “Java EE Basic Profile” be considered?

    A Fast Walk Around the Block

    Thus far we’ve covered the work of the JSR 316 expert group, responsible for determining the overall make-up of the Java EE platform. While this work is critically important and we would love to hear from you on the issues mentioned above, most people associate Java EE with the individual APIs that compose the platform. In this section, let’s take a quick look at the changes in the Java EE 6 APIs. I highly encourage you to dig further into each of these APIs on your own. While I think you will like what you see, all of these APIs can benefit from your timely feedback too.

    WebBeans 1.0:

    WebBeans is perhaps the most groundbreaking API developed in the Java EE 6 time-frame. WebBeans fills a number of gaps in Java EE. Although WebBeans is inspired by Seam, Google Guice as well as Spring, it does not directly mirror any of them. Indeed, WebBeans adds a number of unique innovations of its own. Both Gavin King of JBoss/Red Hat and Bob Lee of Google have been behind WebBeans. Here is the long and short of what WebBeans offers:

  • WebBeans unifies the JSF, JPA and EJB 3 programming models to truly feel like a single, well-integrated platform. It does this by registering EJB 3 beans, JPA entities as well as plain JavaBeans as WebBeans components and making the accessible via EL as well as being injectable into each other. In effect, WebBeans lets you eliminate JSF backing beans and flatten the traditional application tiers if you want.
  • WebBeans implicitly manages the life-cycle of all registered components in appropriate contexts. In addition to the traditional request, session and application centric component scopes, it adds the notion of an implicit “dependent” scope as well as a “conversation scope”. While the dependent scope essentially “inherits” the invoker’s scope, the “conversation scope” is based on the idea of application-demarcated sessions based on stateful workflows. From an EJB 3.1 perspective, this bridges the gap between client-agnostic generic component scopes (stateless, stateful, shared) to Web application centric scopes.
  • WebBeans brings a robust set of dependency injection features to the platform in a completely type-safe and Java-centric way. These features include the ability to integrate arbitrary Java objects that are not EJBs, Servlets or other-wise managed objects, inject managed objects into non-managed objects, inject non-managed objects into managed objects, use object factories, specify the component deployment environment and utilize stereotypes to group annotations metadata together.
  • WebBeans enhances the Java EE Interceptor model by adding the ability to bind interceptors to annotations instead of having to bind interceptors to target object classes themselves. The annotations bound to the interceptors are then placed on the target objects. Unlike the Java EE 5 model, this adds an indirection between interceptors and target objects. WebBeans also adds the very interesting concept of “decorators”. In essence, decorators are interceptors that are aware of target business objects instead of being business domain agnostic.
  • As impressive as this list is, it is just the tip of the iceberg. WebBeans adds a lot of other very cool features that constitutes the next generation of integration features for Java EE. For a closer look at WebBeans, check out the public draft at

    JSF 2.0:

    Despite the fact that the Java presentation tier framework market is fiercely competitive, JSF appears to be holding ground. However, there are a number of valid concerns around the usability and robustness of JSF. JSF 2.0 meets these concerns head-on by focusing on ease-of-use, innovation and expanding the feature set:

  • JSF formally adds Facelets as a view technology. In case you are unfamiliar with Facelets, it is an open source view technology specifically developed with JSF in mind. As a result, unlike JSP, it fits the JSF component model and life-cycle a lot better. However, possibly the most powerful feature Facelets brings to the table is the ability to easily create custom components without Java code and with mark-up instead. The complexity in creating custom components is probably the biggest complaint against JSF.
  • JSF 2.0 brings Java EE 5 style annotation-driven configuration to the table via annotations such as @ManagedBean and @ManagedProperty. This means a dramatic reduction in the size of the faces-config.xml file, although things like navigation rules will still need to be configured in XML.
  • JSF 2.0 changes the JSF life-cycle to account for AJAX. This is done via introducing the concept of partial page processing to handle AJAX events. This enhancement should make developing AJAX capable JSF components feel a more natural.
  • An excellent and timely addition in JSF 2.0 is the built-in capability to handle resources such as images, JavaScript files, CSS and the like. This includes the capability to refer to resources via logical names, grouping resources into libraries and versioning.
  • Besides the list above, JSF 2.0 includes a number of other changes like adding support for events, RAILS_ENV style development stages and significantly expanding the standard set of components. You can check these out yourself by reading the JSF 2.0 public draft at

    EJB 3.1:

    EJB underwent the most dramatic changes in Java EE 5. As much as it may have seemed impossible, EJB 3.0 was relatively well-received by the community and the adoption rate has been growing. It’s probably an oversimplification to think just the changes in Java EE 5 caused this. For example, the interest around JBoss Seam and the vigorous development of GlassFish are probably important contributing factors. The main goal of EJB 3.1 is to continue down the path of making EJB as simple as possible while adding meaningful business component services. Here is a high-level overview of the EJB 3.1 features:

  • Business interfaces have been made optional even for Session Beans. This is particularly useful for using Session Beans in JSF with WebBeans.
  • EJB 3.1 adds the concept of Singleton Beans. Because they are intended for managing shared application state, they are completely thread-safe by default. However, EJB 3.1 adds declarative concurrency controls for greater flexibility.
  • A particularly powerful feature in EJB 3.1 is support for cron-style scheduling. In addition to the current interval based timer API, both declarative and programmatic cron-style scheduling APIs were added.
  • Another powerful feature added to EJB 3.1 is the capability to invoke Session Bean methods asynchronously via the @Asynchronous annotation. You can even control the asynchronous EJB method via a handle to a java.util.concurrent.Future object.
  • The concept of EJB 3.1 Lite was introduced to add a smaller subset of the EJB API geared towards the Web Profile. While EJB Lite includes features like transactions and security, it does not include features like messaging, remoting and scheduling.
  • Besides the features in the list above, EJB 3.1 also adds the capability to package EJBs directly in WAR files, run an embedded EJB 3.1 container in Java SE environments such as JUnit tests and utilize standardized global JNDI names for EJB. The EJB 3.1 public draft covers all these features in detail:

    JPA 2.0:

    As of Java EE 6, JPA has been officially separated from EJB as a distinct API in its own right. There can be little doubt that JPA has been a success. It enjoys great adoption rates and first-class vendor support. That is no meager accomplishment for the persistence standard in Java EE considering the EJB 2.x Entity Beans meltdown. An important factor in this is probably the unequivocal support from Gavin King as well as the rest of the JBoss community. JPA 2.0 aims to build on this success by filing in a few much needed gaps as well as adding useful innovations:

  • JPA 2.0 adds a number of much needed ORM mapping enhancements such as the ability to model collections, maps and lists (that do not represent entity relationships) via the @ElementCollection annotation and the ability to map unidirectional one-to-many relationships (JPA 1.0 only allowed bidirectional one-to-many relationships),
  • Both the EntityManager and Query APIs have been enhanced to support things like retrieving the first result (JPA 1.0 allowed the retrieval of a unique result), specifying the maximum size of query results, getting access to the underlying vendor-specific entity manager/query objects and pessimistic locking (JPA 1.0 only supported optimistic locking).
  • JPQL has been enhanced with SQL-like CASE, NULLIF, COALESCE and like capabilities.
  • JPA 2.0 adds a Criteria API that many folks have been asking for. In case you are unfamiliar with the Criteria API in Hibernate or TopLink, it is essentially the object-oriented, type-safe, Java-centric equivalent of JPQL statements. This is a boon for use cases such as writing complex dynamic queries and avoiding runtime exceptions thrown while parsing JPQL.
  • There are a whole host of other features that JPA 2.0 adds such as standardizing second level caching, standard JDBC properties, specifying timeouts and the like. Feel free to take a look at these features detailed in the JPA 2.0 public draft available from the JSR site:

    Servlet 3.0:

    Given the maturity of the venerable Servlet API, it can perhaps be somewhat surprising that it is going through a major revision. As a matter of fact, the Servlet 3.0 changes have generated quite a bit of excitement and is likely to be very well-received by the community. Here is an overview of the changes:

  • Servlet 3.0 embraces the Java EE 5 model by introducing annotations such as @WebServlet, @ServletFilter and @WebServletContextListener. This significantly reduces web.xml configuration to the point that it could be eliminated altogether.
  • Servlet 3.0 also introduces the idea of web.xml fragments. This means that the container looks for configuration in web.xml fragments anywhere in the web application classpath (such as the WEB-INF/classes directory or jars in the WEB-INF/lib directory) in addition to the web.xml file in WEB-INF directory. This is particularly useful of web application frameworks like JSF or Struts that need their own web.xml configuration to be bootstrapped.
  • Another very cool addition is the ability to programmatically add Servlets, Filters and Listeners through the ServletContext. Like web.xml fragments, this feature is also primarily geared towards framework developers that need to dynamically determine configuration at runtime.
  • Besides the changes above, Servlet 3.0 also introduces features like asynchronous processing support. The Servlet 3.0 public draft is available here for you to take a look at:

    JAX-RS 1.1:

    REST is increasingly gaining traction as an alternative web services development paradigm. The inclusion of JAX-RS, the REST counterpart of JAX-WS, into Java EE is a nod to this trend. Much like JAX-WS abstracts away the low-level details of the SOAP protocol, JAX-RS is designed to reduce REST development to POJO programming and annotation based configuration. Here is a high level view of JAX-RS:

  • The @Path annotation determines the URL that a JAX-RS resource can be accessed, down to a method in a POJO.
  • Annotations like @GET, @POST, @PUT and @DELETE are used to specify the HTTP method that is used to access a resource.
  • Input from sources like URL query parameters, parts of the URL, cookie values and HTTP header values are mapped into variables via annotations like @QueryParam, @PathParam, @CookieParam and @HeaderParam respectively.
  • The @Produces annotation tells JAX-RS what the content type of returned values are such as text/xml, text/json and the like.
  • JAX-RS is integrated with Servlets, WebBeans and EJB.
  • JAX-RS has many other powerful features that make REST development a breeze, much like JAX-WS makes SOAP development almost transparent. The public draft of JAX-RS is downloadable here:

    Your Help is Needed

    As you might be able to see, the expert group is trying hard to evolve Java EE into a powerful platform that is a pleasure to work with. Besides the innovations in the APIs that make up Java EE 6, the changes proposed by the JSR 316 expert group are both deep and broad. However, we can only go so far on our own. We need your feedback to tell us if we are on the right track or if we should be pursuing other paths. You can send your feedback directly to the expert group at Do feel free to copy me at if you like.

    Wish us luck and I look forward to hearing from you!

  • Java EE 6 Platform Public Review,
  • Profiles in the Java EE 6 Platform,
  • Web Beans Sneak Peek Part I: Introducing Web Beans,
  • Web Beans Sneak Peek Part II: Injection, binding annotations and component types,
  • Web Beans Sneak Peek Part III: Declaring components using XML,
  • Web Beans Sneak Peek Part IV: Scopes, contexts and resolver methods,
  • JSF 2.0 New Feature Preview Series (Part 1): ProjectStage,
  • JSF 2.0 New Feature Preview Series (Part 2.1): Resources,
  • JSF 2.0 New Feature Preview Series (Part 2.2): Resources,
  • JSF 2.0 New Feature Preview Series (Part 2.3): Resources,
  • JSF 2.0 New Feature Preview Series (Part 3): Publish/Subscribe Event System,
  • JSF 2.0 New Feature Preview Series (Part 4): Resource Re-location,
  • New Features in EJB 3.1,
  • New Features in EJB 3.1 - Part 2,
  • New Features in EJB 3.1 - Part 3,
  • New Features in EJB 3.1 – Part 4,
  • New Features in EJB 3.1 – Part 5,
  • An Overview of Servlet 3.0,

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    Oracle 1Z0-899 Exam (Java EE 6 Web Component Developer(R) Certified Expert) Detailed Information


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