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

Similar Messages

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.

What is the Java Development Toolkit?

I have been playing Pogo.com for 6 years, however, the last 2 weeks I am/was not able to play a game. They said to adjust computer settings, I did. They said contact my security, I did. Now, they say to install the Java Development Toolkit.
What do I do?
Please help.

You may be looking for this: [http://www.oracle.com/technetwork/java/javase/downloads/jdk7u7-downloads-1836413.html]
Then restart Firefox :-)

Can mac book pro useful for java developer

hi iam a java developer and interested to buy mac book pro.
My question is can i do java projects and programming on mac book pro 13?

mviplav,
yes, you could. Versions of the JDK for OS X can be downloaded from Oracle.

Can't purchase Java Developer for windows CD

Hi,
Somehow when purchasing a Java Developer for Windows CD it always gives a web page with an error. Is there a way to avoid this error, or is there a phone number I can call to make that purchase?
Thanks, Boris.
P.S. The error page has this content:
Error Occurred While Processing Request
Error Diagnostic Information
unknown exception condition
PCodeDocumentNodeImp::prepareForExecution
Date/Time: 11/10/03 10:47:12
Browser: Mozilla/5.0 (Windows; U; Win98; en-US; rv:0.9.4.1) Gecko/20020314 Netscape6/6.2.2
Remote Address: 68.134.170.160
HTTP Referer: http://www.oracle.com/webapps/techtracks/legal.jsp?tid=540&owner=1&opt1_rb=NewUser
Template: E:\Inetpub\wwwroot\oracle-otngold\register.cfm
Please inform the site administrator that this error has occurred (be sure to include the contents of this page in your message to the administrator).
[Edited by: otngroup on Nov 10, 2003 10:25 AM]

Basically you have a 99.9 percent Window's install so any Windows software issues are Microsoft problems.
The only thing I can think of is the Microsoft servers were down briefly for maintenance or problems or maybe had a heavy load. If you were using the Auto update try going to the web site directly as they should be on another server.
You might also try the Microsoft Window XP forums and see what you can find. Maybe search for: "Security Update stalls"?
From what I've read just turning virus protection off doesn't work sometimes, you may have to UN-install it to get it to work.
"Permissions" pertains to MAC SOFTWARE only. 3rd party software or Windows files are NOT affected at all by running permissions. Besides, it will only work on a HD with a Mac operating system anyway. You can't even select the Window partition in permissions to try it anyway.
Good luck....

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

How to deploy a pure jave development component to server?

i have created a pure java development component.
but i cannot find a way to deploy it to server
is there any way?

You need to essencially wrap your java development component with a deployable development component.
In order to do that, you need to:
- Define a public part for your development component of type assembly.
- Create a deployable DC ( one that results in a SDA or a EAR file ).
- Reference your DC from the deployable DC. This will include the generated .jar file into the project.
The definitions of the different types can be found here:
http://help.sap.com/saphelp_nw04/helpdata/en/93/d5a73f05c4265de10000000a114084/content.htm
I would either create a library component ( results in SDA ) or a web dynpro component ( ear file ).

Flex / Java Developer Needed

Brilig (www.brilig.com) is a fun and exciting startup who are changing the world of online advertising. We are currently looking for a talented and energetic Flex/Java developer to join our team for the key role of front end interface developer. We are located in Manhattan and candidate needs to work onsite. Candidates must be able to work independently and take ownership of their domain. This role may lead to a full-time position as the company expands.
Experience:
3 years Flex Builder/Actionscript 3 experience
At least 5 years Java experience
Wicket a strong plus
Experience with Eclipse, Maven, Jetty, Hibernate and SVN a plus
Any web design experience a plus
Please include:
Contract rate
Availability
PLEASE NOTE:
US citizens and Green Card Holders and those authorized to work in the US only. We are unable to sponsor or transfer H-1B candidates.
Contact:
Alex Levin, COO
[email protected]
About Brilig
The online advertising industry is in the midst of a disruptive transition from untargeted ad 'space' buys to sophisticated targeted 'audience' buys. While there are many different kinds of data that can be used individually to target consumers, there is currently no way to combine them to get a complete view of a unique consumer.
The problem is compounded by the fact that audience data exists in different forms, in thousands (maybe millions) of unconnected databases. Brilig is in the business of weaving online audience information together from any data source, wherever it is located. Our service provides a seamless way for publishers (audience sellers) to make their segments available for sale to the open market. Using Brilig, marketers, agencies and behavioral targeters (audience buyers) can access, analyze and combine these audience segments to find lift hidden within the intersection of them and transfer that lift to their online advertising campaigns.

hi ,i am interested in your project ,i have 3 year's flex experience.please
tell me more about it.
eirc

Experienced Java developer needed

We are looking for an experienced java developer to assist us with an existing web based applet project. The developer should have expertise in creating web friendly applets designed with JRE compatibility in mind.
The current applet will allow users to compose a custom designed artwork using fonts, uploaded images and backgrounds. The project utilizes a java applet that is controlled by javascript. This applet is controlled by Cold Fusion code that we developed to interface with this applet. The ColdFusion code represents the interface of the applet
We are having issues with JRE computability with the various versions of Java 1.4. We are looking for someone to assist us in correcting these issues. We will provide the existing source code of the applet. The final product should be compatible with the most popular version of Java currently seeded with Internet Explorer.
All interested parties please contact me by email at the following address:
Jeff Mayer
Foresite Design
[email protected]

Hi Andrew,
I'm sure there are many ways to achieve this. However, since java is my strong point, my suggestion will be biased towards java.
Have your trigger invoke a java stored procedure. This procedure will send a request to a java servlet. The servlet will use JDBC to invoke your other java stored procedure.
I don't think this forum is a suitable way for me to convey specific details of my suggestion, but I think that it may help you to focus on specific areas within the very broad realm that is considered to be java.
I suggest you concentrate on the following topics:
1. Servlets
2. JDBC
For your information, I think the following resources are good starting points:
The Java Tutorial
Servlets Web Site
JavaWorld Article
Good Luck,
Avi.

Java Developer

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