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Test Code : 1Z0-854
Test name : Java touchstone Edition 5 Programmer(R) Certified Professional Upgrade
Vendor name : Oracle
: 138 real Questions

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Oracle Java touchstone Edition 5

Oracle Java regular version Runtime environment | real Questions and Pass4sure dumps

Oracle Java ordinary edition Runtime ambiance (also called JRE SE, Java SE or Java SE Runtime atmosphere) is a closed-source and freely allotted laptop technology that presents a simple solution to hasten Java courses on any Linux-primarily based working gadget.

Invented by passage of solar Microsystems

at the nascence invented by passage of solar Microsystems for interactive television, the software changed into in the past known as Java 2 Platform, regular version or J2SE. It become later obtained through the Oracle corporation that now actively develops and continues the source code.

it's called Java SE (average edition) because the technology is additionally disbursed as a Micro version (ME) and an enterprise edition (EE), which can breathe found most efficient for embedded techniques/mobile gadgets and enterprise computing structures respectively.

distributed as binary packages for every bit of Linux distributions

The challenge makes it practicable for users to appreciate every bit of the latest and top-quality Java applied sciences from each the information superhighway and Java purposes that are usually dispensed as JAR information. it is distributed as binary archives that will too breathe deployed on any sixty four-bit or 32-bit GNU/Linux distribution.

moreover the typical binary files, Oracle additionally provides Linux clients with binary applications for every bit of RPM-based Linux distributions, including crimson Hat traffic Linux, Fedora, openSUSE and OpenMandriva.

Supported on a large number of working methods

The JRE (Java Runtime environment) and JDK (Java construction kit) systems are platform-independent and suitable with many open source and commercial working methods, corresponding to Linux, BSD, Solaris, Microsoft windows and Mac OS X, supporting the 64-bit, 32-bit and SPARC architectures.

while the Java Runtime ambiance platform is used most efficient for enjoying prosperous web content and Java courses, the Java evolution paraphernalia platform helps Java builders to create contemporaneous content material for sites or feature-rich purposes that labor on numerous systems.

Java construction kit carries Java Runtime ambiance

it is additionally crucial to know that JDK (Java pile package) incorporates the JRE (Java Runtime environment) platform, so you don’t should down load them one at a time if your main point is to foster in Java.

Java Runtime ambiance Java accustomed edition Oracle Java Oracle Java JRE SE

Eclipse releases GlassFish 5.1 for Java EE eight | real Questions and Pass4sure dumps

relocating forward with its pile of commercial enterprise Java, the Eclipse groundwork will provide its personal version of the GlassFish application server, which historically has served as a reference implementation of the Java EE (Java traffic version) platform.

Eclipse GlassFish 5.1 is commandeer with the Java EE eight specification and represents the full migration of GlassFish to the open source Eclipse basis. The GlassFish software server supports commercial enterprise technologies including JavaServer Faces, enterprise JavaBeans, and Java Message service.

From Oracle to Eclipse basis

Eclipse, which took over the evolution of commercial enterprise Java from Oracle starting in 2017, noted the release serves as a step toward making inevitable backward compatibility with Jakarta EE, which is Eclipse’s planned successor to Java EE. The subsequent version of Eclipse GlassFish, Eclipse GlassFish 5.2, will role a Jakarta EE eight-appropriate reference implementation.

The migration of GlassFish to Eclipse turned into an “large” engineering and prison problem, the foundation said. GlassFish and Oracle Java EE API contributions to Jakarta EE now are finished. Java EE TCK (examine compatibility kits), formerly personal and proprietary, now are open supply and hosted at Eclipse. also, the Eclipse GlassFish code ground was re-licensed from the CDDL-GPL (regular construction and Distribution License, GNU commonplace Public License) and Classpath to the Eclipse Public License 2.0 plus GPL with the Classpath Exception.

From Java EE to Jakarta EE

Jakarta EE is a manufacturer and a group of standards, simply as Java EE was a manufacturer and set of specifications. Java utility servers may breathe stirring from Java EE to Jakarta EE. youngsters, the Jakarta EE specification system remains in building. the first release of Jakarta EE could breathe Jakarta EE 8, corresponding to Java EE eight. Eclipse hopes to liberate Jakarta EE eight via mid-yr. afterward, plans demand for the judgement that the addition of capabilities reminiscent of modularization, microservices, and a reactive, non-blocking off mannequin to Jakarta EE. Modularization would preserve traffic Java in sync with Java SE (typical version). Jakarta EE will breathe focused on cloud-native deplloyments. Eclipse additionally requires varied, suitable reference implementations of Jakarta EE.

where to down load Eclipse GlassFish 5.1

The production release of Eclipse GlassFish 5.1 should breathe downloadable from Eclipse nascence Tuesday, January 29, 2019.

what's JSP? Introduction to JavaServer Pages | real Questions and Pass4sure dumps

JavaServer Pages (JSP) is a Java middling expertise that makes it practicable for you to jot down dynamic, information-driven pages to your Java web functions. JSP is developed on excellent of the Java Servlet specification. the two technologies usually labor together, exceptionally in older Java internet purposes. From a coding perspective, the most evident change between them is that with servlets you write Java code after which embed client-aspect markup (like HTML) into that code, whereas with JSP you birth with the client-aspect script or markup, then embed JSP tags to connect your page to the Java backend.

JSP is additionally intently related to JSF (JavaServer Faces), a Java specification for pile MVC (model-view-controller) web applications. JSP is a relatively simpler and older know-how than JSF, which is the ordinary for Java web frameworks fancy Eclipse Mojarra, MyFaces, and PrimeFaces. whereas it is not extraordinary to perceive JSP used as the frontend for older JSF functions, Facelets is the favorite view expertise for contemporaneous JSF implementations.

while JSP can too not breathe your first alternative for constructing dynamic internet pages, it's a core Java net technology. JSP pages are tremendously quick and easy to build, and they engage seamlessly with Java servlets in a servlet container fancy Tomcat. you're going to arrive upon JSP in older Java web applications, and every now and then you may additionally find it advantageous for pile elementary, dynamic Java net pages. As a Java developer, breathe sure to at the least breathe commonplace with JSP.

this text could breathe a short introduction to JavaServer Pages, including the JSP regular Tag Library (JSTL). Examples demonstrate you a passage to write an easy HTML page, embed JSP tags to connect to a Java servlet, and hasten the web page in a servlet container.

See previous articles during this string to study extra about Java servlets and JavaServer Faces.

Writing JSP pages

an easy JSP web page (.jsp) includes HTML markup embedded with JSP tags. When the file is processed on the server, the HTML is rendered because the software view, a web web page. The embedded JSP tags should breathe used to muster server-side code and statistics. The diagram in figure 1 suggests the interaction between HTML, JSP, and the web application server.

jsp overview Matthew Tyson

determine 1. JSP overview

list 1 shows an easy JSP web page.

list 1. an easy JSP page <html> <body> <p>$2 * 2 should still equal 4</p> </physique> </html>

In checklist 1, you notice a secrete of HTML that comprises a JSP expression, which is an guideline to the Java server written the usage of Expression Language (EL). in the expression "$2 * 2", the "$" is JSP syntax for interpolating code into HTML. When finished, the JSP will output the results of executing whatever is inner the expression. in this case, the output may breathe the number 4.

JSP in the servlet container

JSP pages must breathe deployed internal a Java servlet container. in order to install a Java net application based on JSP and servlets, you will kit your .jsp info, Java code, and utility metadata in a .conflict file, which is a simple .zip file with a conventional structure for net applications.

once you've loaded the JSP into your servlet container, it will breathe compiled prerogative into a servlet. JSPs and Java servlets partake identical traits, together with the means to entry and respond to request objects. Apache Tomcat 9x is the reference implementation for the Servlet four.0 and JSP 2.3 requisites. (observe that updates between JSP 2.2 and a brace of.three are rather minor.)

example app for JSP

we will exhaust an instance utility in Tomcat to congregate you began with JavaServer Pages. if you don't already believe Tomcat installed, browse over to the Tomcat down load web page and select the Tomcat setting up in your operating gadget. As of this writing, Tomcat 9 is the current unlock, commandeer with Servlet 4.0 and JSP 2.3.

that you may installation Tomcat as a home windows carrier, or hasten it from the command line with /bin/ nascence or /bin/catalina.bat. both method, birth up Tomcat, then fade to localhost:8080 to notice the Tomcat welcome web page shown in determine 2.

tomcat welcome 1 Matthew Tyson

determine 2. Tomcat welcome web page

Implicit Objects in Tomcat

On the Tomcat welcome web page, click the Examples hyperlink, then click JSP Examples.

subsequent, open the Implicit Objects Execute net utility. determine 3 suggests output for this application. remove a minute to perceive at this output.

implicit jsp Matthew Tyson

determine three. pattern JSP output

Request parameters

Implicit objects are built-in objects accessible via a JSP web page. As a web page developer, you're going to exhaust these objects to create entry to things fancy request parameters, which might breathe the records despatched over from the browser when issuing an HTTP request. believe the browser URL for Implicit Objects:


The param is ?foo=bar, and you may notice it mirrored in the output on the internet web page, the set the table suggests "EL Expression" and the cost is "bar." To verify this out, exchange the URL to http://localhost:8080/examples/jsp/jsp2/el/implicit-objects.jsp?foo=zork, hit Enter, and you may notice the trade mirrored within the output.

This illustration is a extremely basic introduction to the exhaust of JSP tags to entry server-aspect request parameters. in this case, the JSP page makes exhaust of the built-in (implicit) remonstrate referred to as param to access the web application's request parameters. The param remonstrate is obtainable internal the JSP expression syntax that you simply noticed in record 1.

In that illustration, they used an expression to accomplish some math: $2 * 2, which output four.

in this illustration, the expression is used to access an remonstrate and a province on that object: $

JSP in a web utility

On the Implicit Objects page, click on the back arrow, adopted by passage of the source link. this may lead you to the JSP code for the Implicit Objects net app, which is shown in listing 2.

record 2. JSP code for the Implicit Objects web app <%@page contentType="text/html; charset=UTF-8" %> <%@ taglib prefix="fn" uri="" %> <html> <head> <title>JSP 2.0 Expression Language - Implicit Objects</title> </head> <physique> <h1>JSP 2.0 Expression Language - Implicit Objects</h1> <hr> This sample illustrates one of the implicit objects attainable in the Expression Language. prerogative here implicit objects are obtainable (no longer every bit of illustrated prerogative here): <ul> <li>pageContext - the PageContext object</li> <li>pageScope - a Map that maps page-scoped credit names to their values</li> <li>requestScope - a Map that maps request-scoped credit names to their values</li> <li>sessionScope - a Map that maps session-scoped credit names to their values</li> <li>applicationScope - a Map that maps utility-scoped attribute names to their values</li> <li>param - a Map that maps parameter names to a solitary String parameter value</li> <li>paramValues - a Map that maps parameter names to a String[] of every bit of values for that parameter</li> <li>header - a Map that maps header names to a solitary String header price</li> <li>headerValues - a Map that maps header names to a String[] of every bit of values for that header</li> <li>initParam - a Map that maps context initialization parameter names to their String parameter cost</li> <li>cookie - a Map that maps cookie names to a solitary Cookie object.</li> </ul> <blockquote> <u><b>trade Parameter</b></u> <kind motion="implicit-objects.jsp" components="GET"> foo = <input class="textual content" identify="foo" price="$fn:escapeXml(param["foo"])"> <input category="publish"> </form> <br> <code> <desk border="1"> <thead> <td><b>EL Expression</b></td> <td><b>outcomes</b></td> </thead> <tr> <td>\$</td> <td>$fn:escapeXml(param["foo"])&nbsp;</td> </tr> <tr> <td>\$param["foo"]</td> <td>$fn:escapeXml(param["foo"])&nbsp;</td> </tr> <tr> <td>\$header["host"]</td> <td>$fn:escapeXml(header["host"])&nbsp;</td> </tr> <tr> <td>\$header["accept"]</td> <td>$fn:escapeXml(header["accept"])&nbsp;</td> </tr> <tr> <td>\$header["user-agent"]</td> <td>$fn:escapeXml(header["user-agent"])&nbsp;</td> </tr> </desk> </code> </blockquote> </body> </html> JSP capabilities

if you are conventional with HTML, then checklist 2 may still appear fairly popular. you believe got the anticipated HTML <td> points, followed by using the $ JSP expression syntax introduced in listing 1. however observe the value for <td>$fn:escapeXml(param["foo"])&nbsp;</td>. The "fn:escapeXML()" is a JSP function.

A JSP characteristic encapsulates a chunk of reusable performance. during this case, the functionality is to shun XML. JSP offers a gross lot of services, and you'll additionally create features your self. to exhaust a function, you import its library into your JSP web page, then name the function.

In listing 2, the escapeXML feature is included with the road:

<%@ taglib prefix="fn" uri="" %>

The syntax is pretty clear: it imports the mandatory capabilities and assigns them a prefix (in this case "fn") that will too breathe utilized in every bit of following expressions.

The JSP touchstone Tag Library (JSTL)

The import line in list 2 calls taglib, which is brief for tag library, or (in this case) JSP regular Tag Library (JSTL). Tag libraries outline reusable bits of functionality for JSP. JSTL is the typical tag library, containing a group of taglibs that ship with every servlet and JSP implementation, together with Tomcat.

The "functions" library is only one of the taglibs blanketed with JSTL. an additional regular taglib is the core library, which you import by calling:

<%@ taglib uri = "" prefix = "c" %>

Like "fn", the "c" designation is ordinary, and you'll notice it across most JSP pages.

Securing JSP pages

An instance tag from the core library is

<c:out value = "$'<div>'"/>

which outputs the <div> tag with the XML already escaped. This role is distinguished because outputting content material without deliberate to an internet page by the exhaust of $variable opens the door to script injection assaults. This simple feature is used to tender protection to internet pages from such attacks.

The core library too includes a variety of tags for iteration and circulation control (like IF/ELSE managing).

Calling taglibs in JSP pages

Now that you've received a deal with on JSP fundamentals, let's create a change to the illustration application. To delivery, locate the Implicit remonstrate app in your Tomcat installation. The route is: apache-tomcat-eight.5.33/webapps/examples/jsp/jsp2/el.

Open this file and locate the capabilities consist of:

<%@ taglib prefix="fn" uri="" %>

just under this line, add a current line:

<%@ taglib prefix="c" uri="" %>

Hit return and add a different current line:

<c:out cost = "$'this is a test of the JSTL Core Library'"/>

Now reload the web page at http://localhost:8080/examples/jsp/jsp2/el/implicit-objects.jsp?foo=bar.

make sure you notice your updates mirrored in the output.

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Overcoming Android's Problems with JDK 7, fraction 1 | real questions and Pass4sure dumps

Google doesn't include JDK 7 in Android's system requirements, but it's still practicable to exhaust this JDK to develop Android apps. However, you necessity to breathe vigilant of three problems that can repercussion app development. Java expert Jeff Friesen launches a two-part string that introduces you to these problems and presents solutions. fraction 1 focuses on JAR library creation and release mode APK signing problems.

Like this article? They recommend 

Google doesn't include JDK 7 in Android's system requirements, but you can still exhaust this JDK to develop Android apps. Before doing so, you necessity to breathe vigilant of three problems that are bound to plague you during development. This article begins a two-part string that introduces you to these problems and shows you how to overcome them. fraction 1 investigates problems related to JAR library creation and release mode APK signing.

You've created a JAR library whose source code doesn't reference Android-specific APIs, nor does it reference touchstone Java APIs newer than Java 5, except for the few Java 6 enhancements to Android's version of the class (and maybe other Java 6 enhancements that are present in Android). Furthermore, the source code doesn't reference any language features introduced after Java 5.

You determine to incorporate this library into the app that you're pile by copying its JAR file into your project's libs directory (which is located underneath the project home directory). You compile the source code and let Android merge the library into the resulting app, and note a successful build. You then install the APK and attempt to hasten the app, and are greeted with a message that the app has stopped.

To demonstrate this problem, create a UseUtils project. Execute the following command (spread across two lines for readability) to create UseUtils:

android create project -t 2 -p C:\prj\dev\UseUtils -a UseUtils -k ca.tutortutor.useutils

This command creates a UseUtils project directory whose src subdirectory contains a ca subdirectory, which contains a tutortutor subdirectory, which contains a useutils subdirectory. Furthermore, useutils contains a skeletal source file. supersede this file's contents with Listing 1.

Listing 1—Toasting startup by presenting a randomly generated integer. package ca.tutortutor.useutils; import; import android.os.Bundle; import android.widget.Toast; import ca.tutortutor.utils.Utils; public class UseUtils extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Toast.makeText(this, "Random integer [0, 255]: "+Utils.rnd(256), Toast.LENGTH_LONG).show(); } }

Listing 1 declares a UseUtils activity class that imports a Utils class from package ca.tutortutor.utils. UseUtils calls this other class's rnd(int) class mode to return a randomly generated integer ranging from 0 through 255. This integer is included in a message that's presented to the user via a toast (a message that's displayed for a short time).

Listing 2 presents the contents of a source file that declares the Utils class.

Listing 2—Utils consists of simple utility methods. package ca.tutortutor.utils; public class Utils { public static int rnd(int limit) { // return random integer between 0 and confine (exclusive). return (int) (Math.random()*limit); } }

Listing 2's Utils class is a placeholder for various simple utility methods, such as the int rnd(int limit) mode that returns a randomly generated integer between 0 (inclusive) and confine (exclusive). Presumably, other utility classes offering more complicated utilities could breathe added to the ca.tutortutor.utils package in the future.

Complete the following steps to create a utils.jar file:

  • Create a ca\tutortutor\utils directory hierarchy under the current directory.
  • Copy a source file containing Listing 2 into utils.
  • From the current directory, execute javac ca/tutortutor/utils/ to compile this file.
  • From the current directory, execute jar cf utils.jar ca/tutortutor/utils/*.class to create utils.jar.
  • Copy utils.jar to the project's libs directory. Then, with UseUtils as the current directory, execute ant debug to build the APK.

    Switch to the bin subdirectory, and you should observe a UseUtils-debug.apk file among other files. Assuming that an emulated device for Android 4.1 is running, execute the following command to install this APK file (which is really a ZIP file with an .apk file extension) onto this emulated device:

    adb install UseUtils-debug.apk

    Switch to the device's app launcher screen and locate the UseUtils icon. Click this icon and you should observe figure 1's oversight message.

    Figure 1 Android has forced UseUtils to close.

    Why has Android closed the app? The following excerpt from the output generated while running Ant's build.xml file hints at the answer:

    [dx] calamity processing: [dx] immoral class file magic (cafebabe) or version (0033.0000) [dx] ...while parsing ca/tutortutor/utils/Utils.class [dx] ...while processing ca/tutortutor/utils/Utils.class [dx] 1 warning

    Android's dx tool, which converts Java classfiles to their Android equivalent, silently excludes classes that target Java 7 (their classfiles believe a major version number of 51 and a minor version number of 0) from the generated classes.dex file. This omission results in a thrown error, which can breathe viewed by executing adb logcat, whose output appears in figure 2.

    Figure 2 The immediate is caused by a thrown error.

    The Dalvik virtual machine equivalent of Utils.class was not stored in classes.dex, and an attempt to reference this class (at startup) has resulted in a thrown instance of the Dalvik equivalent of the java.lang.NoClassDefFoundError class. You can further prove this occasions to yourself by executing the following command from within the bin directory:

    dexdump classes.dex

    The classes.dex file contains Android's Dalvik equivalent of the project's compiled Java classfiles. The dexdump instrument processes this file and generates a disassembly. Search this disassembly and you'll not find a reference to the Utils class, because this JDK 7-created class is not present.

    To fix this problem, include the -source and -target options when compiling the source code via javac, as follows:

    javac -source 1.5 -target 1.5 ca/tutortutor/utils/ javac -source 1.6 -target 1.6 ca/tutortutor/utils/

    Execute either of these commands, and a Java 5- or Java 6-compatible classfile is generated. Furthermore, the dx instrument will not exclude the Utils class from classes.dex. For proof, rebuild the project, reinstall UseUtils-debug.apk, and hasten the app. You should notice a screen similar to that shown in figure 3, with the toast near the bottom.

    Figure 3 The Hello World, UseUtils message results from the default res\layout\main.xml file.

    Java Enterprise Edition 7 | real questions and Pass4sure dumps


    Most enterprise applications will necessity to deal with persistent data, and interaction with relational databases can breathe a tedious and difficult endeavor. The Java Persistence API (JPA) specification aims to provide an remonstrate view of backend storage in a transactionally-aware manner. By dealing with POJOs, JPA enables developers to achieve CRUD operations without the necessity for manually tuning SQL.

    To activate JPA, a META-INF/persistence.xml file must breathe present in the JAR or WAR in which persistence functionality is to breathe used; however, a default data-source is now provided, simplifying testing and development.

    Example META-INF/persistence.xml:

    <?xml version="1.0" encoding="UTF-8"?> <persistence version="2.1" xmlns="" xmlns:xsi="" xsi:schemaLocation=""> <persistence-unit name="MyPU" transaction-type="JTA"></persistence-unit> </persistence>

    New in JPA 2.1 is:

    Support for Stored Procedures

    We may exhaust the current @NamedStoredProcedureQuery annotation atop an entity to define a stored procedure:

    @Entity @NamedStoredProcedureQuery(name="newestBlogsSP", procedureName="newestBlogs") public class Blog {...}

    From the client side, they may muster this stored procedure like:

    StoredProcedureQuery query = EntityManager.createNamedStoredProcedureQuery("newestBlogsSP"); query.registerStoredProcedureParameter(1, String.class, ParameterMode.INOUT); query.setParameter(1, "newest"); query.registerStoredProcedureParameter(2, Integer.class, ParameterMode.IN); query.setParameter(2, 10); query.execute(); String response = query.getOutputParameterValue(1);

    Bulk Update and Delete via the Query API

    CriteriaUpdate, CriteriaDelete, and CommonAbstractQuery interfaces believe been added to the API, and the AbstractQuery interface has been refactored.

    A spec sample of a bulk update may perceive like:

    CriteriaUpdate<Customer> q = cb.createCriteriaUpdate(Customer.class); Root<Customer> c = q.from(Customer.class); q.set(c.get(Customer_.status), "outstanding") .where(, 10000));

    Entity listeners using CDI

    Listeners on existing entity events @PrePersist, @PostPersist, @PreUpdate, and @PreRemove now back CDI injections, and entity listeners may themselves breathe annotated with @PostConstruct and @PreDestroy.

    Synchronization of persistence contexts

    In JPA 2, the persistence context is synchronized with the underlying resource manager. Any updates made to the persistence context are propagated to the resource manager. JPA 2.1 introduces the concept of unsynchronized persistence context. Here is how you can create a container-managed unsynchronized persistence context:

    @PersistenceContext(synchronization=SynchronizationType.UNSYNCHRONIZED) EntityManager em;

    Standard vs. Enterprise Editions of Oracle | real questions and Pass4sure dumps

    What's the dissimilarity between touchstone Edition and Enterprise Edition?

    The differences are in three main dimensions: server size, features and available options. This discussion refers to the different editions of Oracle10g only.

    Standard Edition can breathe hasten on a solitary server or server cluster with a maximum of four CPUs. There is no CPU confine for Enterprise Edition.

    Standard Edition does not include a number of features of Enterprise Edition, including data compression, bitmapped indexes, transportable tablespace export, change data capture, summary management (materialized views and refresh mechanisms, among others) and parallelization of operations such as queries, DML and index creation. lofty availability features such as DATA GUARD, FLASHBACK, online table and index maintenance are provided only in Enterprise Edition. In the realm of information integration, Oracle streams and advanced replication are not supported by touchstone Edition. Finally, Virtual private database and fine-grained auditing are available only in Enterprise Edition. Note that this list is not complete; for details, check the Oracle10g documentation set or MetaLink note 271886.

    Several extra-cost options are available only with an Enterprise Edition license. They are advanced security, data mining, label security, OLAP, partitioning, spatial, the programmer interfaces for database evolution and the various enterprise manager packs (change management, tuning, diagnostics and configuration management).

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