Java Developer Exam.

I'm thinking of taking the Java Developer exam.
People who have done the Java Developer exam, could you please contribute with your help by answering these questions ?
1. How long did you program in Java before taking the exam on ?
2. How long did it take for you to complete the programming task ?
3. Was it more difficult than the Java Programmer exam ?
4. Is it worth to take it ?
5. What was the hardest part of the exam ?
Other comments on the Java Developer exam are welcomed as well.
Cheers
/Andreas

Here is what I would recommend, based on my experience:
* Take the mock exams - the tests at javacertificate.com do a good job of helping you identify your strengths and weaknesses. Dan Chisholm's mock exams are tough, but also good for opening your eyes to some things you might not have thought about.
* Concentrate on your weaknesses (mine were assertions, garbage collections, and threads).
* Practice your butt off writing code. Practice, practice, practice. And DON'T use an IDE. Code with a simple text editor and compile from the command line. The test is going to tax your ability to "compile" in your head and you don't want an IDE doing that work for you.
* Familiarize yourself with the Exam objectives. Know those inside and out, and you'll have no trouble with the test. Don't waste time on non-covered topics (e.g. java.io, java.awt).
* Figure out why you want this certification. It's not going to win you any admirers among the gurus. It's probably not going to get you a job. It doesn't mean you can code your way out of a wet paper bag. It's just the start of your journey in Java.
For me, it was something I wanted to prove to myself - a self-taught, entry-level programmer at the time - I could get. It helped me tremendously in my understanding of basic Java, so I don't regret obtaining the cert one bit. I also realize I have a LONG way to go. So, good luck, study hard, practice, practice, practice, and let us know how you do! If I can be of any help, let me know. :o)
Sun's Java Certification website
Mock exams
http://www.javacertificate.com/
http://www.javaranch.com/certification.jsp
http://www.jchq.net/
http://www.danchisholm.net/

Similar Messages

Java Developer Exam Questions

I got my JCP certification a while ago and have been debating if it is even worth it to go forth and get the Developer certification. A colleague of mine told me that certification exams for specific technologies are generally good only for contract work, not for full-time employees. He suggested rather than wasting my time and money on exams that I should take night classes and work towards a masters.
So this is really a two part question, first of all do you think it is worth the money and time? Secondly, what kind of project assignment could I expect to get if I sign up for it?

well certification in itself is a buzzword which
might be missing.No one expects a developer with 10 years of
experience to have a developer certification in the
CV. It might actually make the CV look odd /
suspicious. Why have a developer certification in
there if you already have lots of experience?
KajWell I have personally interviewed 10s of developers with 10 years of experience, but actually it turned out that they had 10 * 1year experience. Certifications are just a proff that you have worked on that technology as well. We are not talking about just java certifications. e.g. if I am hiring a java developer with 10 years of java experience who has an oracle certification as well, and I need somebody in the team to have a good understanding of databases it would be beneficial.
Or if the job requires some level of tibco experience, tibco certification would be good to have. Certifications just serve a hint that the applicant has some level of proficiency in the field he has been certified in. A j2ee enterprise architect certification might give one an idea that the applicant is familar with some practices in enterprise architecture. 10 years experience might not guarantee that, plus you might agree a lot of resumes you see these days of mid level developers, claim some kind of architectural exp., thought they might not even know of GoF patterns let alone Enterprise integration patterns. If I have two resumes in front of me with same amount of experience, one with a lot of certifications and the other just experience I would prefer the former, since atleast i know somebody has already done the pre screening for me.
I know what you are talking about, but I always encourage developers to go for certifications and not just java certifications,.
PS. I am not talking about entry level certifications only.

Oracle database 11g certification for Java developer

Hello,
I'm Java developer, OCPJP 6 ( Oracle Certified Professional, Java Programmer +6+ ) and
I decided to pass exams: 1Z0-051 and 1Z0-052 to get OCA ( Oracle Database +11g+ Administrator Certified Associate ) certificate,
but I need some advice, maybe i should seek other certificate, that would be more valuable for Java developer, than OCA.
Thanks for advice.

The answer of whether a particular certification is valuable depends on you, not the tests themselves. The Oracle Certified Master for example is an extremely prestigious certification, and I have considered seeking it at some point in the future to improve my professional credentials. However, the same certification would have absolutely no value to my wife, because she's a homemaker with no interest or intent of ever working with Oracle.
Using an example a little closer to yours, only reversed --- I work as a DBA and PL/SQL developer. On several occasions I have dabbled with Java, and took a couple of classes when I worked for Oracle. I could code in Java if I had to, but wouldn't really be good without a lot of practice. However, I've never really had a sufficient need in my work to dig in and really practice enough to use it. I considered going for the Oracle Java certifications as a means of kick-starting that and getting to the point where it was really a viable option in my development. Ultimately I decided not to because I've been working with Oracle for better than fifteen years and there has never been an occasion where I really felt a need to know Java. If I were to spend a bunch of time improving my Java skills just for the certification, there's no guarantee I would ever use them after that.
Coming back to you -- if you already need SQL and DBA skills in your work, then those certifications should be of value to you immediately. If you think that you might work (or want to work) more with SQL and DBA-level skills in the future, then they should be of value to you in the future. If you won't use the skills now or ever, then the exams do nothing but add a line to your resume (which still has value, but you must determine how much).
Edited by: matthew_morris on Apr 30, 2012 1:56 PM

Java Developer

Hi, I am Java Developer !

1. SUN CERTIFIED DEVELOPER FOR THE JAVA[tm] 2 PLATFORMComprises a programming assignment and a follow-up exam. The assignment requires a significant amount of work (at least a month) and focuses on developing a Swing GUI, a simple database and network connectivity. You also have to document your design and reasons for your choices. Where the Programmer Certification tests your knowledge of the language ("human compiler"), the Developer Cert tests whether you understand how to design and code.
If Swing and network programming (RMI/socket) are your interests, then working through the assignment is valuable and you learn a lot about design techniques and coding. The exam also asks questions on your design and I suspect is meant to prove that you did the work yourself.
2. SUN CERTIFIED WEB COMPONENT DEVELOPER FOR J2EE[tm] PLATFORMExam only, similar in format to the programmer exam. Also like the programmer exam, tests only theory and not practice. Focus is on Servlets and JSP. Requires much less effort than the Developer Cert. Studying for this cert will teach you the fundamentals of Servlets, JSP and the web app deployment descriptor.
I would like to find out which one is useful and valuable?Depends on your interests, Java GUI/network design or Web development.
Also please give me some "Good TIPS, BOOKS,WEB SITES to prepare"http://www.coreservlets.com/
http://www.javaranch.com/scwcdlinks.jsp

.jar file for java mock exams

Dear all,
please tell me where can i find the .jar file of java mock exams?
Thanking you,
Mitesh.

I don't know about a .jar file, but here is a link for some
quizzes: http://developer.java.sun.com/developer/Quizzes/
Mark

I'm a new bie for JAVA Development

Hi All,
I'm going to start JAVA development as my full time so far I was in support. I have worked with the basic level of JAVA as a support engineer. I have read Kathy, Sierra's Head First JAVA and the SCJP preliminary exams books. I wish to know for what books I can go on to read next. Seeking for friends's and experts suggestion before I move to buy. Your suggestions and ideas are welcome.
Thanks
Mohammed@@

Hi Mohammed,
for starters it's Java (no acronym). Books are a very subjective thing. Have a look at the ratings and comments on different books on amazon, visit a local bookstore and flip through a couple of books. Nobody here knows what you'll need int future.
Regards

SQL certification for a java developer?

Hello,
Can somone please let me know which dba or sql certification I should get as a java developer? My heart is at application development but I though having a solid knowledge in sql queries or database management would help me in writting a better softwares.
Please let me know.
Thank you.

matthew_morris wrote:
....I have been thinking slightly on our debate .... ( and have these rushed thoughts before heading for bed).
* I am sure we both agree on the certification study journey and knowledge gained being more important than the end certificate (except perhaps the certificate is needed for job interview or OPN partner points)
* wrt 1z0-051 .... Taking a test that doesn't provide a certification is even more pointless.
... IMHO it may a have little value to some
[1] ... they can still say exam passed on CV .... maybe that helps get a job.
[2] it is chance to gain experience of certification exams ... 1z0-047 is a tough introduction to certification exams.
[3] It is a chance to get a quicker certification exam 'win'
[3] It is a cheaper exam (as it it online available and not 'high stakes' ... ie does not give a certifcation by itself).
.... 1z0-051 is about 2/3 the cost of 1z0-047
But I am willing to accept this is a perhaps a small set of positives; and thier may be no point for many.
I really don't like the fact that anyone wanting an Oracle (Enterprise Edition) SQL certification (without PL/SQL) has to go for SQL OCE. An earlier certification would be better.
I generally like the CIW Database Design Specialist: (Exam 1D0-541) content .....
I would certainly modify my earlier idea of 1z0-047 having as a pre-requisite an earlier SQL exam / certification as a pre-req ....
And would certainly have 1z0-051 or CIW Database Design Specialist: (Exam 1D0-541) on the pre-req list ...
( There are precedents for non-oracle exams/certs being acceptable in lieu of an oracle exam .... eg LPIC-1 for 1z0-402 )
( There is however IMHO no precedent for an OCE exam having another exam as a precedent ).
.... Apologies to original poster .... I may have sidetracked your orginal question with a slight debate.

In Portal (Java Development)

Dear members of hte group
in order to get java development button in EP
what should i install
( now i installed EP6 sp 9 having SAPDB )
and i uploaded pdk60.90 file through SDM)
plz ans this
regards
satish

this a repeat posting for same question
Java development button
Daniel, In EP6 SP4(WAS 6.4) PDK is installed via SDM. Assign yourself java development role.

Flex for Java Developer?

I am working on flex 1.5 from last 7 months.Ealier i hv
worked on Java (1.5 Yr)
I hv created an application in flex sucessfully.
My Qtn is:
Whether i have to continue with flex or move to another
technologies like Struts etc.
Because i have nil knowlwge of FLASH.
or
I hv to start learning FLASH MX. Is it necessary for
Flex/Java Developer.
I am comfortable with action script if uses for Business
Application but
unable to produce better designs using it.
Please Suggest.
with Regards
Vinay

well vinay if u r thinking about -- Flex Front End to Your
Struts Applications
then ,,
Struts is an open source framework that facilitates the
development of web applications based on Java servlets and other
related technologies. Because it provides a solution to many of the
common problems developers face when building these applications,
Struts has been widely adopted in a large variety of development
efforts, from small projects to large-scale enterprise
applications.
Although Struts greatly facilitates the task of developers,
it doesn't do much to improve the end-user experience: the
end-result is still an application delivered in HTML and using the
traditional HTTP request/response mechanism.
Developers—and organizations in general—are
increasingly looking for solutions to provide their applications
with a more engaging user experience that overcomes the limitations
of HTML.
Macromedia Flex is a presentation server that addresses this
requirement and allows developers to build a new generation of Rich
Internet Applications (RIAs) that combine the usability of desktop
applications with the reach of traditional web applications.

Java Development issue/differences between Core Duo and Core 2 Duo (??)

Hi Everyone,
I am a Java developer that uses my 17" MBP Core Duo for all of my development. Lately, I've been trying to use both the Glassfish Application Server V2 (from Sun) and Maven 2.09 from the Apache project. I have configured identical scenarios on my MBP Core Duo and on a 15" MBP Core 2 Duo.
The scenario involves compiling and running some webservices (at least on the Core 2 Duo) in a local development environment. Both machines use the default JDK 1.5.0_13 installed on the machine.
On the 17" Core Duo, issuing a "mvn install" command produces the following error:
[INFO] Compiling 1 source file to /Users/john/downloads/soabook-code-20070504/chap07/endpoint-provider/modules/en dpoint/target/classes
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Fatal error compiling
Embedded error: Prohibited package name: java.lang
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 12 seconds
[INFO] Finished at: Fri Sep 05 07:09:06 CDT 2008
[INFO] Final Memory: 9M/17M
[INFO] ------------------------------------------------------------------------
Running Maven with the "-e" switch turned on produces the following stacktrace:
org.apache.maven.lifecycle.LifecycleExecutionException: Fatal error compiling
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecyc leExecutor.java:564)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(De faultLifecycleExecutor.java:480)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycl eExecutor.java:459)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailure s(DefaultLifecycleExecutor.java:311)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(Default LifecycleExecutor.java:278)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExe cutor.java:143)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:334)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:125)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:280)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.plugin.MojoExecutionException: Fatal error compiling
at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java: 498)
at org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:114)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.j ava:443)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecyc leExecutor.java:539)
... 16 more
Caused by: java.lang.SecurityException: Prohibited package name: java.lang
at java.lang.ClassLoader.preDefineClass(ClassLoader.java:534)
at java.lang.ClassLoader.defineClass(ClassLoader.java:669)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at org.codehaus.plexus.compiler.javac.IsolatedClassLoader.loadClass(IsolatedClassL oader.java:56)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:374)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:675)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at org.codehaus.plexus.compiler.javac.IsolatedClassLoader.loadClass(IsolatedClassL oader.java:56)
at org.codehaus.plexus.compiler.javac.JavacCompiler.compileInProcess(JavacCompiler .java:398)
at org.codehaus.plexus.compiler.javac.JavacCompiler.compile(JavacCompiler.java:141 )
at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java: 493)
However, the exact same software setup on the Core 2 Duo produces this result (which I would expect on the Core Duo):
[INFO] Installing /Users/john/Downloads/soabook-code-20070504/chap07/endpoint-provider/pom.xml to /Users/mjhart/.m2/repository/soabook/chap07-endpoint-provider/1.0/chap07-endpoi nt-provider-1.0.pom
[INFO]
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] ------------------------------------------------------------------------
[INFO] CHAP07-ENDPOINT-PROVIDER-WSDL2JAVA .................... SUCCESS [1:35.885s]
[INFO] CHAP07-ENDPOINT-PROVIDER-ENDPOINT ..................... SUCCESS [7.221s]
[INFO] CHAP07-ENDPOINT-PROVIDER-CLIENT ....................... SUCCESS [16.525s]
[INFO] CHAP07-ENDPOINT-PROVIDER .............................. SUCCESS [1.597s]
[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2 minutes 1 second
[INFO] Finished at: Fri Sep 05 07:07:23 CDT 2008
[INFO] Final Memory: 16M/30M
[INFO] ------------------------------------------------------------------------
I have installed the same software versions and have the same configuration on a Windows desktop running XP SP2 and get the same successful result.
Is this an issue between the Core Duo and Core 2 Duo? I can't see that it is since I don't believe the hardware influences the software to that degree. However, I am at a loss for what is causing the issue and the Apache Maven list insists that there are developers that are using Maven successfully on OS X.
I really need to get past this issue, but I am at a loss. Please help.
Thanks,
John

Have you repaired permissions? (/Applications/Utilities/Disk Utility.app)
Are you sure you're using JDK 5? (Applications/Utilities/Java/Java Preferences.app or output of $ javac -version)
--greg

Oracle Database Express Edition 2 Day Plus Java Developer Guide??

I posted in the JDeveloper forum, as well as sending email via your feedback link found on the tutorial but I am a little disappointed by this:
The Oracle® Database Express Edition 2 Day Plus Java Developer Guide has some errors in it.
in Windows, I simply chose, start
-> programs -> Oracle Database Express Edition -> Go To Database Home Page -> click documentation from the link -> and run the Oracle® Database Express Edition 2 Day Plus Java Developer Guide tutorial.
the problem is there are mistake(s) in the tutorial, for example: section 4-19 is this:
"The complete code for the method should now be as follows:
public boolean authenticateUser(String userid, String password,
HttpSession session) throws SQLException { "
it needs to be this:
public boolean authenticateUser(String jdbcURL, String userid, String password,
HttpSession session) throws SQLException {
Also:
there is no mention that :
the port and SID must also be passed in the
ds.setURL(jdbcUrl) found in the authenticateUser() method, or an exception is thrown. This differs from value of the jdbcUrl string found in the getDBConnection() , which makes it hard to figure out
The tutorial is great even if it doesn't work out of the box, but I am disappointed that errata or completed code for this project is not available, especially when you explicitely point to it via the steps mentioned above.
Thanks,
Patrick

The tutorial seems to be using the old JDeveloper 10.1.2.
If you are aiming to learn JDeveloper then just use the tutorials linked from the JDeveloper home page.
http://www.oracle.com/technology/obe/obe1013jdev/index.htm

What url should be given to java developer to call wsdl deployed by XI?

Hi gurus,
I generate a web service by using integration directory, and in the wsdl file there is a parameter "location", which I think can be used by java developer to call the web service. However, they think the form of url should be http://.....?wsdl.
So my question is: where can I get this form of url? Any help will be appreciated.

Hi ,
while generating the wsdl you should give an url in below format
"http://host:port/XISOAPAdapter/MessageServlet?channel=party:service:channel".
Then u can download the wsdl file and give to ur java developer. this file will be ending with.wsdl and file will contain the endpoint url, where the actual service is.
Again if this is not working and if they really want to download, then u should create UUDI registry in ur server and u shoul publish ur service in that registry. from ther developer can directly download the webservice.
how to configure and publish, u can search in SDN with below topic's
"WebAS : A step by step guide for Configuring UDDI registry on Local Server"
"XI : How To publish WSDL generated from XI to UDDI"
Regards
Pradeep P N

Java Development Role problems!

I have tried to add the java development role to a users account. I have added the following roles:
SAP_JAVA_NWADMIN_CENTRAL
SAP_JAVA_NWADMIN_LOCAL
Apparently they are meant to get a new tab but it does not appear. Am I adding the right roles?

Hi Phil,
See this link for help
http://help.sap.com/saphelp_nw04/helpdata/en/e2/75a74046033913e10000000a155106/frameset.htm
First, You have to create a logger.xml file in the Logger folder of your portal component
Then get a hold of that logger and write to it:
ILogger pLogger;
pLogger = PortalRuntime.getLogger("my_logger");
pLogger.info("testing");
Then, you can find this Logger in EP6 under : System Admin > monitoring > portal > Logging Console
Hope this helps
h

Issue with create user and issue with Java Development tab

I have two issues with EP,
1. When i login with Super Admin user, i am unable to Create any user from User Admin tab. Do i have to change the settings of the Super Admin? or is there any criteria for creating the user?
2. How to assign any user the Java Development tab. Though i login with a super admin user i am unable to see the Java Development role and when tried to assign the role, there were no searches for that Java....

Hi Adi,
by default the super administrater has got all permissions. Thus you should be able to create portal users when using a user assigned to the portal group Administrators.
In order to help you with your first question we need more information. Please describe the malfunction in detail. Have a look into the log files and post related error messages.
Regarding your second question: You will find the java development role in PCD
pcd:portal_content/com.sap.pct/platform_add_ons/com.sap.pct.pdk/Roles/com.sap.pct.pdk.JavaDeveloper.
If not, then you haven't installed the PDK business package in your portal.
Go to service.sap.com, choose downloads and search the package (PDK should do it). Download the package, and deploy on your portal using SDM.
Best regards,
Martin

Removing Java Development toolkit 6.0.160.1

How do I go about Removing Java Development toolkit 6.0.160.1?

In Windows Explorer, locate C:\Program Files\Java\jre6\bin\new_plugin\ - in there should be file named npdeploytk.dll
Exit Firefox, rename the file for now, (i.e., DISABLED-npdeploytk.dll then restart Firefox and see if the Java Deployment Toolkit is gone. Then you can delete it.
You should update Java to version 1.6.0.20. Start>Control Panel>Java, Update tab, click Update.
NOTE: Each update will reinstall the Java Deployment Toolkit. The security issue causing older versions to be disabled has been fixed, so it won't prompt you to disable the latest version.
If you are on Windows 64-bit, go to C:\Program Files (x86)\Java\jre6\bin\new_plugin\ instead.

Java Developer Exam.

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