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310-065 exam Dumps Source : Sun Certified Programmer for the Java 2 Platform.SE 6.0

Test Code : 310-065
Test title : Sun Certified Programmer for the Java 2 Platform.SE 6.0
Vendor title : SUN
: 305 true Questions

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Vitakraft solar Seed Earns secure first-rate foods Certification | killexams.com true Questions and Pass4sure dumps

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SQF is a global meals protection Initiative (GFSI) identified certification and is frequent international for process first-class and security. Certification is because of the implementation and renovation of numerous high-quality assurance protocols which align with the strict SQF code, bringing food security to the subsequent degree.

“SQF Certification marks one more milestone in their company’s want to supply the best items for their purchasers and their pets,” referred to Darryl Leatherman, food safeguard manager for Vitakraft sun Seed. “Our purchasers now and in the future gain the reassurance that their parts, substances dealing with, creation programs and finished products meet stringent, globally diagnosed specifications for food safety.”

Vitakraft sun Seed is found in Weston, Ohio where it begun producing Sunseed items practically four many years in the past. After becoming a member of with German-based mostly counterpart Vitakraft’s U.S. subsidiary in 2008, the mixed enterprise has persevered to develop its product choices and  gain sum the way through the us and beyond, talked about enterprise officers. The enterprise is passionate about embracing nutritional science and novel technologies to supply consumers and their pets with extravagant first-rate meals and treats.

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solar Certification and certificates application Overviews | killexams.com true Questions and Pass4sure dumps

The lessons blanketed in Java programming certificates programs are essentially technical and vocational courses with microscopic to no widespread schooling requirements. Some selected examples of courses protected in such classes consist of:

  • Introduction to programming
  • Java programming
  • Object-oriented design
  • Java design patterns
  • Unified modeling language
  • Java ME for mobile instruments
  • Employment Outlook sand profits info

    From 2014-2024, laptop programmers had been projected to peer an eight% decline in employment opportunities, pointed out the U.S. Bureau of Labor statistics. The imply wages of desktop programmers had been $84,360 in may additionally 2015.

    carrying on with education and Certification

    The solar Microsystems subsidiary of the Oracle supplier is the best entity to present solar certifications (www.solar.com). although the traffic presents several various kinds of certifications, probably the most standard types is the sun certified Java Programmer (SCJP). Most students who comprehensive a certificate application in Java programming are eligible to sit down for the SCJP examination. The assessments are offered at a considerable number of trying out websites around the country.

    grasp's degree courses are additionally accessible for graduates with sun certification, together with the master of Science (M.S.) in application Engineering, M.S. in computer suggestions methods or M.S. in tips methods. These programs can build together IT experts for career advancement or additional examine in a linked field.

    students interested in Java programming can subscribe to a sun certification software to be extra marketable or expert as a laptop programmer. grasp's degree classes and different styles of certifications can be found as neatly.


    Java succeed Quizzes | killexams.com true Questions and Pass4sure dumps

    These quizzes were written according to the solar Java certification exams. that you may learn extra Java questions in the Oracle quizzes district - the Java certifications previously offered by means of solar Microsystems, reminiscent of solar licensed Java Programmer (SCJP), are actually fragment of the Oracle certification application.

    The solar certified Programmer for the Java 2 Platform exam become initially step one towards many superior Java certifications and accepted as evidence of simple Java scholarship by way of sun, apoplectic Hewlett-Packard, website IBM, Oracle, and Sybase. because then Oracle obtained sun certifications, but these questions may additionally nonetheless point to helpful for making ready for Java certification tests.

    Thirty questions in line with the ambitions for the sun licensed Programmer for the J2SE 1.4 Platform examination.

    This series of questions turned into created to back candidates prepare for the solar Microsystems certified enterprise Architect for Java expertise examination. solar certifications gain considering been rolled into the Oracle certification program, ed but these questions may additionally nonetheless point to constructive.


    310-065 Sun Certified Programmer for the Java 2 Platform.SE 6.0

    Study usher Prepared by Killexams.com SUN Dumps Experts


    Killexams.com 310-065 Dumps and true Questions

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    310-065 exam Dumps Source : Sun Certified Programmer for the Java 2 Platform.SE 6.0

    Test Code : 310-065
    Test title : Sun Certified Programmer for the Java 2 Platform.SE 6.0
    Vendor title : SUN
    : 305 true Questions

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    Sun Certified Programmer for the Java 2 Platform.SE 6.0

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    Anatomy of a Java Finalizer | killexams.com true questions and Pass4sure dumps

    A couple of patterns that could cause Java pile exhaustion were identified from years of research at IBM. One provocative scenario was observed when Java applications generated an extravagant amount of finalizable objects whose classes had non-trivial Java finalizers.

    What Is a Java Finalizer?A Java finalizer performs finalization tasks for an object. It's the antithetical of a Java constructor, which creates and initializes an instance of a Java class. A Java finalizer can be used to execute postmortem cleanup tasks on an instance of a class or to release system resources such as file descriptors or network socket connections when an demur is no longer needed and those resources gain to be released for other objects. You don't need any dispute or any recrudesce value for a finalizer. Unfortunately the current Java language specification does not define any finalizers for a Java class or interface when a class or interface is unloaded. Let's acquire a closer watch at finalize() way of java.lang.Object that provides an instance method, finalize() for finalization:

    protected void finalize() throws Throwable

    When a Java demur is no longer needed, the space occupied by the demur is supposed to be recycled automatically by the Java garbage collector. This is one of the significant differences in Java and is not found in most structural programming languages enjoy C. If an instance of a class implements the finalize() method, its space cannot be recycled by the garbage collector in a timely fashion. Worst case, it may not be recycled at all.

    Any instances of classes that implement the finalize() way are often called finalizable objects. They will not be immediately reclaimed by the Java garbage collector when they are no longer referenced. Instead, the Java garbage collector appends the objects to a special queue for the finalization process. Usually it's performed by a special thread called a "Reference Handler" on some Java Virtual Machines. During this finalization process, the "Finalizer" thread will execute each finalize() way of the objects. Only after successful completion of the finalize() way will an demur be handed over for Java garbage collection to rep its space reclaimed by "future" garbage collection. I did not speak "current," which means at least two garbage collection cycles are required to reclaim the finalizable object. Sounds enjoy it has some overhead? You got it. They need several shots to rep the space recycled.

    Finalizer threads are not given maximum priorities on systems. If a "Finalizer" thread cannot preserve up with the rate at which higher priority threads cause finalizable objects to be queued, the finalizer queue will preserve growing and cause the Java pile to fill up. Eventually the Java pile will rep exhausted and a java.lang.OutOfMemoryError will be thrown.

    A Java Virtual Machine will never invoke the finalize() way more than once for any object. If there's any exception thrown by the finalize() method, the finalization of the demur is halted.

    You are free to enact virtually anything in the finalize() way of your class. When you enact that, tickle enact not hope the memory space occupied by each and every demur to be reclaimed by the Java garbage collector when the demur is no longer referenced or no longer needed. Why? It is not guaranteed that the finalize() way will complete the execution in timely manner. Worst case, it may not be even invoked even when there are no more references to the object. That means it's not guaranteed that any objects that gain a finalize() way are garbage collected. That's a potential hazard from a memory management perspective and, needless to say, there is considerable overhead for queuing, dequeuing, running the finalize() method, and rescanning the demur in the next garbage collection cycle.

    If you want to hasten cleanup tasks on objects, reckon finalizers as a ultimate apply and implement your own cleanup method, which will be more predictable. It's very risky to rely on finalizers for postmortem cleanup tasks, especially if your finalizable objects gain references to autochthonous resources.

    Hands-on experience with Java FinalizerWe can easily simulate this scenario with a couple of test applications and acquire a watch at dumps and traces to see what's happening inside of the Java pile and threads for hands-on experience.

    Let's build a couple of Java classes to recreate typical scenarios.

    In ObjectWYieldFinalizer, they can implement the way finalize() with Thread.yield() so that finalize() cannot complete its execution (see Listing 1) (Listings 1-7 can be downloaded here.)

    The Thread.yield() way prevents the currently executing thread from running and allows other threads to execute. If the Finalizer thread calls this finalize() method, it will respite its execution.

    In ObjectWExceptionFinalizer, the finalizer() way immediately throws a java.lang.IndexOutOfBoundsException. If the Finalizer thread calls this finalize() method, the demur finalization won't be completed because of the exception and there's no second desultory to hasten the finalize() way (see Listing 2).

    In ObjectWEmptyFinalizer, they don't implement any code in the finalize() way (see Listing 3). ObjectWOFinalizer doesn't gain any finalize() way (see Listing 4).

    Let's hasten each of the classes to see what happens. Sun's Java Virtual Machine (JVM) can be used with the following options for the class TestObjectWYieldFinalizer.

    /sun1.6.0_10/bin/java -Xmx50m -verbosegc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintHeapAtGC -XX:+HeapDumpOnOutOfMemoryError TestObjectWYieldFinalizer > verbosegc.txt

    It looks very complicated. Why enact they need those command-line options? Well, without those options, they only rep a microscopic information about Java garbage collection activities enjoy this:

    [Full GC 50815K->45644K(50816K), 0.2276940 secs][Full GC 48780K->46415K(50816K), 0.2233279 secs][Full GC 49551K->49551K(50816K), 0.2396315 secs][Full GC 50815K->50815K(50816K), 0.1886312 secs][Full GC 50815K->49219K(50816K), 0.1964926 secs][Full GC 50815K->50815K(50816K), 0.1865343 secs][Full GC 50815K->50815K(50816K), 0.1836961 secs]

    We only rep a type of garbage collection (Full GC), total Java pile usage before garbage collection (50,815K), total Java pile usage after garbage collection (45,644K), a elevated watermark of total Java pile (50,816K), and time spent in the garbage collection (0.2276940 secs).

    High watermark is the size of the current Java heap. The Java pile can expand its size up to a maximum size or shrink to manage Java pile effectively.

    The -XX:+PrintGCDetails option lets the JVM provide information on each generation in the Java heap.

    We can see Java pile usage and the time (in seconds) spent in Java garbage collection of each novel generation, tenured generation, and permanent generation with the -XX:+PrintGCDetails option in the following example:

    [GC [DefNew: 3520K->3520K(3520K), 0.0001143 secs][Tenured: 43897K->47295K(47296K), 0.2110999 secs] 47417K->47415K(50816K), [Perm : 17K->17K(12288K)], 0.2115593 secs][Times: user=0.22 sys=0.00, real=0.22 secs]

    In tenured generation, Java pile usage was 43,897KB before this Java garbage collection. Java pile usage reached 47,295KB after Java garbage collection; 47296K is the size of the elevated watermark of the tenured generation; 0.2110999 second was spent to collect the tenured generation. Unfortunately they enact not see the maximum size of each generation with the -XX:+PrintGCDetails option alone.

    With -XX:+PrintGCTimeStamps, they can rep a timestamp for each garbage collection enjoy this:

    1.393: [GC 1002K->106K(5056K), 0.0001036 secs]

    This garbage collection started 1.393 seconds after the JVM started.

    The -XX:+PrintHeapAtGC option provides extensive information about each Java garbage collection (see Listing 5).

    We can even see the address compass of each generation. Unfortunately there's no timestamp for each garbage collection with -XX:+PrintHeapAtGC option alone.

    The ultimate option, -XX:-HeapDumpOnOutOfMemoryError allows the JVM to dump the Java pile to a file when an allocation from the Java pile cannot be satisfied or a java.lang.OutOfMemoryError is thrown. This option was introduced in Sun Java 1.4.2 update 12 and Sun Java 5.0 update 7.

    If you want to experiment with IBM's Java Virtual Machine, sum you need is a -verbosegc command-line option. You enact not need any of these: -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintHeapAtGC, or -XX:+HeapDumpOnOutOfMemoryError.

    Let's acquire a watch at what happened to the class while they talked about Sun JVM's command-line option. We've got java.lang.OutOfMemoryError from TestObjectWYieldFinalizer:

    Exception in the thread "main" java.lang.OutOfMemoryError: Java pile spaceat java.lang.ref.Finalizer.register(Finalizer.java:72)at java.lang.Object.<init>(Object.java:20)at ObjectWYieldFinalizer.<init>(ObjectWYieldFinalizer.java:2)at TestObjectWYieldFinalizer.main(TestObjectWYieldFinalizer.java:11)

    "java.lang.OutOfMemoryError: Java pile space." That means they got Java pile space exhaustion. The JVM could not designate any more Java pile while running the way java.lang.ref.Finalizer.register(), which is on line 72 of Finalizer.java. Finalizer.java? Of course, they did not write Finalizer.java. That's a fragment of the JVM. They can besides check verbosegc.txt to which they redirected the garbage collection trace (see Listing 6).

    About 3.711 seconds after the JVM started, they got java.lang.OutOfMemoryError. The Java pile dump is written to pid124.hprof.

    Analysis of Java Garbage Collection TracesWe can exhaust a tool to dissect this trace. The IBM Pattern Modeling and Analysis Tool for Java Garbage Collector (PMAT) is one of top five technologies at alphaWorks. I gain implemented patented algorithms to prognosticate future failures related to Java pile exhaustion in this tool. tickle advert to United States Patent No. 7,475,214 if you are interested in the algorithms. Although they don't need these algorithms to investigate simple problem enjoy this, you might be able to find situations where you could rep some insight from fortune tellers. They can rep a copy of the tool here.

    PMAT parses verbose garbage collection (GC) trace, analyzes Java pile usage, and recommends practicable solutions based on pattern modeling of Java pile usage.

    The following features are included:

  • GC analysis
  • GC table view
  • Allocation failure summary
  • GC usage summary
  • GC duration summary
  • GC graph view
  • GC pattern analysis
  • Zoom in/out/selection/center of chart view
  • The tool can besides parse Sun's Java garbage collector traces, including the following:

  • Serial collector
  • Throughput/parallel collector
  • Concurrent collector
  • Incremental/train collector
  • We can start version 3.2 of the tool with a jar file in the download package. (V3.2 was the latest version when this article was written.)

    # /usr/java5/bin/java -Xmx200m -jar ga32.jar

    The tool provides a headless mode but let's bring up the graphical user interface mode for smooth demonstration. They can click on the "N" icon to open Sun's trace file. They can click on "I" for IBM's trace file as seen in figure 1.

    We can see in figure 2 the analysis result and recommendation virtually instantly.


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    (This product is not endorsed, sponsored or affiliated with Sun Microsystems, Inc. SCJP are trademarks or registered trademarks of Sun Microsystems, Inc. and/or its affiliates in the United States and other countries.)


    Comparing the Technologies | killexams.com true questions and Pass4sure dumps

    Language and Runtime Support

    Java. Developed in 1995 by Sun. sum code is compiled into bytecode and interpreted by a virtual machine (JVM). May besides be selectively JIT compiled, depending on the JVM, or fully natively compiled with ancillary products (such as JOVE). Can hasten on any platform that supports a JVM. IBM supports v1.3 of the J2SE SDK.

    VBScript and JScript for Web pages and any COM-based language for server components (typically VB or VC++). Scripts are interpreted, while components are natively compiled. VB code besides requires a runtime DLL (MSVBMxx.DLL). VBScript and JScript came into exhaust in 1997, while COM grew out of OLE in 1993.

    Any language that supports the Common Language Runtime (20-plus in development). Initially compiled to an intermediate language (MSIL) and then JIT compiled to autochthonous code by the CLR at runtime or natively compiled (PreJit) at install time. Code written for the CLR is referred to as managed code. Support for the CLR will be shipped with future OSes starting with Windows XP Server released by the halt of 2001.

    Class Libraries

    Standard Java classes found in the J2SE, plus the APIs (JDBC, JSP, EJB, JMS, JAXP, JCA, JFC, JNDI, and so on, as defined in the J2EE specification). In addition, vendors embrace their own extensions to J2EE for integration and differentiation in the marketplace.

    Win32, COM, MFC, ATL, and ASP. Five primary programming models that contain APIs that developers exhaust in edifice solutions.

    Services Framework. A hierarchical set of managed classes arranged in namespaces. Provides a consistent programming model and unifies the APIs needed to build solutions.

    Deployment

    Java Package. Collection of Java classes assembled as a unit and arranged hierarchically. Weak versioning. Server-based deployment uses XML-based deployment descriptors, which are read and handled differently by each vendor's implementation. WebSphere includes an application assembly tool to wield this process.

    DLL, EXE. DLLs contain a collection of functions with weak versioning. EXEs portray an executable program with weak versioning. COM components are housed in DLLs, rely on the registry, and support immutable interfaces but no runtime version checking. Server-based installation accomplished through third-party utilities such as InstallShield.

    Assembly. Unit of deployment, security, and versioning. Includes built-in PKI support and metadata to tightly control binding of assemblies at runtime. Support exists in the class loader of the CLR for consistency and version checking. Server-based deployment can be done in a no-impact style by simply copying the relative paths that contain the application. Applications besides can explicitly share components. Support for the Windows Installer included in VS.NET.

    Thin Client

    Java Server Pages (JSP). WAS supports JavaScript or Java in JSPs that are compiled into HttpServlets on the skim and are cached by the server. No autochthonous support exists for different devices, and there are no client-state services other than cookies. WAS ships with an HTTP engine (1.3.19) but can exhaust Apache, Domino, Netscape, iPlanet, or IIS 4.0/5.0. WAS 4.0 is v1.1–compliant. The syntax of JSPs is a knockoff of ASP and was developed in 1998.

    Active Server Pages (ASP 2.0). Technology introduced by MSFT in 1997 in which pages containing server-side code are interpreted by an ISAPI server extension and can exhaust simple HTTP caching through headers. No autochthonous support exists for different devices, and there are no client-state services other than cookies. ASP runs primarily on IIS 4.0/5.0 but has been ported to other platforms (see Chili!Soft, purchased by Sun). Performance of JSP and ASP is similar on similar hardware platforms.

    ASP.NET. ASP.NET pages are compiled into MSIL either statically or on the skim when a request is made. Server control architecture allows abstraction for different devices and state storage across HTTP POST events. Server controls allow developers to create "adaptive controls" to render HTML, WML, and so on as preempt for the client platform. Runs on IIS 4.0/5.0. Beta performance tests bespeak a 200–300% improvement over JSP and ASP.

    Web Server Processing

    HttpServlets provide a request/response model available to Java classes in addition to session-state services keyed with a client cookie. JSPs often muster servlets as the controller that acts as the broker between presentation and traffic service layers to provide separation between the HTML and Java code. Because of the complexity of writing servlets many "two-tier Web apps" simply gain the servlets beget direct calls to the underlying database via JDBC. This leads to spaghetti code that is difficult to debug and maintain. The servlet engine is included in WAS and includes a JDBC connection manager that handles database connection pooling. WAS 4.0 is v2.2–compliant.

    The ASP runtime implemented in the ISAPI server extension provides a request/response model in addition to session- (keyed with a client cookie) and application-state services. ASP pages often muster traffic services directly implemented as COM components, although many "two-tier Web apps" simply gain the ASP pages beget direct calls to the database via ADO. This leads to spaghetti code that is difficult to debug and maintain.

    The HTTP Runtime in ASP.NET provides an extensible mechanism by which developers can hook into the processing of resources on the Web server through HTTP Modules. Provides very tight integration with the Web server. besides supports a request/response model and application- and session-state services. Session-state services can be deployed on a separate server to augment scalability. Provides a sophisticated caching mechanism for pages and programming code. Provides complete separation of HTML code and programming logic through code behind.

    Object Services

    Enterprise Java Beans (EJB). fragment of the original J2EE specification in 1998. Java classes that are deployed in component-oriented middleware (a container) that provides interception and adds services such as distributed transactions (using the Java Transaction Service [JTS] based on the OMG and using IIOP), security, and database connectivity. The container can hasten on the very server or remotely. EJBs arrive in two flavors: entity beans and session beans. Entity beans map to the state of an demur as represented by a row in a database. Entity beans provide the mapping to the database and caching of the entity. Entity beans arrive in two styles: Container Managed Persistence (CMP) and Bean Managed Persistence (BMP). CMP beans allow the container to manage loading and saving the database information, whereas BMP beans provide methods for the developer to insert JDBC code directly. Session beans arrive in two flavors: stateful and stateless. Stateful beans maintain a conversation with a single client, whereas stateless beans can be reused by multiple clients, with the container handling the allocation. WAS 4.0 is EJB 1.1–compliant.

    Microsoft Transaction Server (MTS). Provides component-oriented middleware for COM components introduced in 1996. Provides interception and adds distributed transactions through the Microsoft Distributed Transaction Coordinator service (MSDTC), security, and demur activation support. Objects can be both stateful and stateless, depending on administrative settings. Programmers acquire edge of MTS services through the exhaust of an API. Only components built in VC++ are free-threaded and thus execute better. No support for automatically mapping database rows to demur instances exists.

    Component Services (COM+ 1.0). Released with Windows 2000 in 2000 and provides component-oriented middleware for COM components. Provides interception and adds distributed transactions, security, demur construction, demur pooling, queued components (for asynchronous integration with MSMQ), loosely coupled events for publishing and subscribing to components, and activation support. Objects can be both stateful and stateless, depending on administrative settings. Although built for COM, .NET programmers create serviced components in .NET by deriving their class from a system class and decorate it with attributes to relate the services that it uses. The system class then communicates with COM+ via Win32 and COM APIs. No support for automatically mapping database rows to demur instances exists. (The IMDB product that was removed from prerelease versions of COM+ would gain served a similar purpose as entity beans, although the ADO.NET DataSet demur serves a similar purpose.)

    Database Support

    JDBC. Data Access API that allows SQL access to a tabular data source via drivers (there are currently 159 listed on Sun's site under 4 different types, ranging from JDBC to ODBC bridges to fully native-protocol Java implementations). Various drivers support connection pooling, distributed transactions, and rowsets, and some are J2EE-certified. The API is similar to the Win32 implementation of ODBC. JDBC 2.0 is the spec under J2EE 1.2, but 3.0 has been defined. Note that when using entity beans with CMP, the container provides the mapping to the database tables through a vendor-specific mechanism. WAS 4.0 supports JDBC core v2.1 and Extensions 2.0. WAS includes providers for DB2, MSSQL, Oracle, Informix, and Sybase.

    ADO/OLE DB. OLE DB is both a specification for COM interfaces that database vendors implement (OLE Providers) and a set of services (such as cursor processing and connection pooling) implemented in Windows to provide data access to a variety of data sources. ADO is a simplified automation layer that sits on top of OLE DB to provide data access to scripting languages and COM-based languages such as VB. Although typically used for tabular data access, both ADO and OLE DB can be used to access nonstructured data such as email and XML. OLE DB besides can be used to access data through the plethora of available ODBC drivers.

    ADO.NET. A set of managed classes that provides access to data sources through what are called managed providers. These embrace TDS (SQL Server), OLE DB providers, and ODBC drivers. Each managed provider implements connections and connection pooling, commands/parameters, forward-only cursor processing, transaction processing, and oversight handling. ADO.NET besides includes a middle-tier data cache demur called a DataSet that provides an XML-based cache of data that can be used to bind to controls and synchronize changes to a data source through an adapter demur implemented by the managed provider. Designed to support a loosely connected model with built-in XML representation of the data and XSD representation of the schema. Developers can work with relational data as XML data, and vice versa through the XMLDataDocument class.

    Messaging

    Java Messaging Services (JMS). JMS is a set of client interfaces to message-oriented middleware (MOM) products that supports both message queues and publish-and-subscribe metaphors. MOM vendors implement JMS providers. JMS includes a specification for a novel type of EJB, message beans. WAS includes the (WebSphere MQ) MQSeries JMS provider. WAS 4.0 is compliant with the 1.0.2 specification and includes support for JMS-XA distributed transactions across MQSeries-enabled systems and databases. need to obtain WebSphere MQ separately.

    Microsoft Message Queue Server (MSMQ). A MOM server product running on NT 4 and W2K that supports message queues but does not embrace a publish-and-subscribe feature built into the product. The product includes a COM-based API for sending and receiving messages and administering queues. Supports distributed transactions through MSDTC. MSMQ is built into Windows NT 4.0 Server.

    System.Messaging. A set of managed classes that provide the administrative and client APIs for working with MSMQ servers. MSMQ is built into Windows 2000 Server. It should be noted that developers can access MSMQ through queued components (QC) supported by COM+ 1.0. QC acts as an abstraction layer to allow clients to asynchronously beget way calls on components that are backed by MSMQ.

    Fat Client

    Java Foundation Classes (JFC). JFC includes the Abstract Windowing Toolkit (AWT) and Swing as Java APIs for edifice GUII applications. Swing is a more abstract API and includes a "look and feel" for developing the very GUI on multiple platforms or adhering to a platform standard. Advanced graphics can be created with the Java2D and 3D APIs. GUI apps hasten as standalone applications or applets running in a browser.

    Win32/ActiveX. Applications written in VB, VC++, or other Windows progress tools. Ultimately these tools beget calls to the Win32 API for the underlying window management. ActiveX is a COM-based technology for edifice reusable binary visual components (.ocx) across progress environments. Applications hasten as standalone applications or as ActiveX controls hosted in MSIE. Advanced graphics are available through the DirectX set of COM-based APIs.

    Windows Forms. Set of managed classes that allow for the creation of forms-based applications. Takes edge of novel Windows 2000 features such as nonrectangular forms. Includes a managed control architecture to build reusable visual controls. Third parties will provide wrappers for DirectX functionality. Windows Forms–based applications can hasten as standalone applications or can be hosted in MSIE on clients with the CLR installed.

    Integration

    J2EE Connector (JCA). JCA is a specification based on the IBM Common Connector Framework (CCF). WAS contains WAS adapters used to connect to packaged applications such as JDEdwards, SAP, Peoplesoft, and so on. These are JCA-compliant and are shipped with VisualAge for Java. You can besides build novel adapters using the MQSeries adapter offerings. WAS AE multiserver version only.

    SNA Server 4.0. Server product that includes OLE DB and ODBC support for AS/400 and DB2. besides includes COM Transaction Integrator (COMTI) for working with CICS and IMS transactions as if they were COM objects. Includes MSMQ-MQSeries bridge and host printing services, among others. Basically, this is COM-based integration, and there are besides connectors to packaged products such as the SAP DCOM Connector.

    Host Integration Server 2000. Update of SNA Server. besides includes integration with Commerce Server, BizTalk, energetic Directory, and Windows Management Instrumentation (WMI). BizTalk besides supports application-integration components (AIC) that can be built to integrate with packaged applications; for example, there is a SAP R/3 AIC available.

    XML Support

    Java API for XML Parsing (JAXP). An API and abstraction layer to deal with various XML parsers. Not included in the J2EE 1.2, but 1.0 is in 1.3. v1.1 supports XSLT and DOM plane 2 and SAX v2.0. IBM has a 100% Java validating XML parser with JAXP support available on its Web site. WAS includes support for DOM 1.0, SAX 1.0, and XSLT 1.0.

    MSXML. Microsoft's COM-based XML parser, included as a standalone addition to the OS and in products such as MSIE. Version 3.0 sp1 is the current version, with v4.0 as a technology preview on the MSDN Web site. V3.0 supports XSLT, XPath, and SAX2. Implements much of the DOM functionality specified by the WS3C, in addition to SAX support for event-based processing of big XML documents.

    System.Xml. A set of managed classes that implement the DOM, XSLT, and XPath specifications by the W3C. Supports both a tree-based model (DOM) and an innovative stream-based approach for parsing XML documents. besides contains a class that maps XML documents to the ADO.NET DataSet class to provide XML-based access to relational data.

    Web Services

    WAS ships with the Apache SOAP 2.2 tool support. The toolkit is SOAP 1.1–compliant. Can expose Java classes, EJBs, BSF scripts, or DB2-stored procs as a Web Service. Includes a command-line utility to publish EJBs as SOAP services. progress tools contain wizards to create WSDL from an existing Java application or read WSDL to create a server stub or client proxy. UUDI4J support is besides included for client-side interaction with UDDI registries.

    SOAP Toolkit 2.0. Downloadable. Current release is sp2. Provides a COM wrapper for implementing Web Services. Wizard exposes COM objects as a Web Service using ASP or IIS ISAPI extensions. Support for WSDL 1.1. A separate UDDI SDK is available for download, and provides a COM API for edifice and querying a UDDI registry. The toolkit integrates into VS 6.0 so that creating Web Services from COM components is straightforward.

    .NET Framework. SOAP 1.1 is implemented in a variety of the base class libraries and, therefore, is very tightly integrated from both consumer and implementer perspectives. Allows individual methods in managed classes to be exposed as Web Services through an impute of the framework. Automatic creation of WSDL from XSD schemas and managed classes. Automatic creation of managed client proxies from WSDL through the command line and UI in VS.NET with replete Intellisense. A separate UDDI SDK is available for download that provides managed classes for edifice and querying a UDDI registry.

    Remoting

    Remote way Invocation (RMI)-Internet InterORB Protocol (IIOP). Provides the programming model (RMI) and the protocol layer for (CORBA IIOP) Java-to-Java communication. Servlets and applets communicate with EJBs via RMI. Assumes a tightly bound model that creates firewall issues and is not well suited to the Internet.

    DCOM. Extension of COM for component communication across the network using any of the Windows NT network protocols. Includes remote activation and security features. Remoting of demur instances must be specifically programmed into the COM objects themselves. Assumes a tightly bound model that creates firewall issues and is not well suited to the Internet.

    .NET Remoting. Implemented in a set of managed classes. Allows managed code to communicate across app domain boundaries. Can communicate via HTTP or TCP channels. Supports remoting of demur instances via binary or SOAP protocols. Supports singletons and client activation. The exhaust of HTTP and SOAP promotes a loosely coupled architecture that does not incur firewall problems.

    Naming Services

    Java Naming and Directory Interface (JNDI). Programming interface that provides access to directory services such as DNS, LDAP, Novell (NDS), and CORBA COS through vendor-specific providers.

    WAS 4.0 is JNDI 1.2–compliant for EJB lookup. The IBM SecureWay Directory 3.2.1 product is included in WAS for access to energetic Directory, Lotus Domino, and NDS.

    Active Directory Services Interface (ADSI). COM programming interface that supports access to NT, LDAP, and Novell (NDS) directory services through vendor-specific providers.

    Active Directory and System.DirectoryServices namespace. Windows 2000 Server includes the distributed directory used in a Windows 2000 domain while the managed classes, in DirectoryServices provide a wrapper around the ADSI interfaces to programmatically access a directory.

    Development Tools

    WebSphere Studio, Visual Age for Java. Both ship with WAS. Studio is used to build the visual representation of Web pages and JSPs, while Visual Age is used for Java coding of servlets, beans, and EJBs.

    Visual Studio 6.0, released in 1998 (three IDEs). Separate IDEs exist for VC++/Visual Interdev for ASP development, and VB for configuration and component development. Graphical Web development.

    Visual Studio.NET. Single IDE that supports unified debugging, project management, Intellisense, Server Explorer, graphical editor for the Web and forms, class view, dynamic help, add-ins, and scripting. Can be used to build console applications, Windows Forms, Web Forms, Web Services, Windows Services, and components. Third-party compiler vendors can plug into VS.NET.

    B2B Integration

    ebXML. An industry specification (not a shipping product) for performing business-to-business transactions using XML and the Web. Includes some support for SOAP. Not implemented in WAS. Would need to roll your own infrastructure perhaps using Web Services.

    No support on NT 4. Would need to roll your own infrastructure using the SOAP Toolkit and Windows services.

    BizTalk Server 2000, released in 2000. A separate server product that provides a messaging/scheduling engine and traffic process orchestration facilities. Messaging includes support for EDI, SOAP, and Rosettanet grammars, in addition to others.

    Key Strengths

    For organizations that must gain platform neutrality, J2EE is the only alternative. The Java language is becoming more widely accepted. Vendors such as IBM offer a single-vendor solution when dealing with legacy applications. Separation of application logic and presentation exists, although, in practice, this is underutilized. EJB model includes automatic database-mapping facilities through CMP.

    Large base of VB/ASP developers, resulting in reduced costs. Runs on commodity servers that can be scaled out. Software costs are low. Multiple language support through COM. Tight integration with the dominant client platform (Windows).

    Multiple languages supported with a common set of class libraries. Unified programming model with the Services Framework. elevated productivity progress environment. Web application performance. Runs on commodity servers that can be scaled out. Separation of application logic and presentation exists. Greater integration with XML and Web Services protocols. Tight integration with the dominant client platform (Windows).

    Key Weakness

    Single-language solution. Smaller base of developers. EJBs are involved and not widely used. Thus, JSPs are overused, resulting in spaghetti code. Varying levels of J2EE conformance across vendors. The need to exhaust vendor-specific features leads to vendor lock-in. Performance varies due to vendor-specific implementations. Software cost is generally higher, developer costs are higher, and deployment time is increased.

    Highly fragmented programming model. COM infrastructure is unwieldy, leading to DLL hell and versioning problems. ASP pages that enact not utilize COM for traffic and data-access services lead to spaghetti code. Single-vendor solution.

    Not a shipping product. OO nature of CLR makes progress initially more complicated for VB/ASP developers. Single-vendor solution. Does not support an automatic mapping of database rows to objects as with CMP, although there is widespread disagreement within the industry as to whether entity beans are desirable because they enact not promote transactional consistency and are questionable in terms of performance. For more information, see Roger Session's Web site.



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    IBM [1530 Certification Exam(s) ]
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    Medical [69 Certification Exam(s) ]
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    SUN [63 Certification Exam(s) ]
    SUSE [1 Certification Exam(s) ]
    Sybase [17 Certification Exam(s) ]
    Symantec [134 Certification Exam(s) ]
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    The-Open-Group [8 Certification Exam(s) ]
    TIA [3 Certification Exam(s) ]
    Tibco [18 Certification Exam(s) ]
    Trainers [3 Certification Exam(s) ]
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    TruSecure [1 Certification Exam(s) ]
    USMLE [1 Certification Exam(s) ]
    VCE [6 Certification Exam(s) ]
    Veeam [2 Certification Exam(s) ]
    Veritas [33 Certification Exam(s) ]
    Vmware [58 Certification Exam(s) ]
    Wonderlic [2 Certification Exam(s) ]
    Worldatwork [2 Certification Exam(s) ]
    XML-Master [3 Certification Exam(s) ]
    Zend [6 Certification Exam(s) ]





    References :


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