Some basic questions on Java development and NetWeaver CE

Hi there,
Can someone please explain for me:
1. What are the development tools that will help me do Java development in SAP?
2. Can I use non-SAP Java development tools (e.g. WebSphere or Eclipse) to develop custom extensions? Are these equivalent to the functionality provided by CE?
3. Given the options for doing Java development in SAP, are there any situations where I would need to do custom development in ABAP? (Is the Java functionality equivalent to the ABAP functionality?)
4. Is NetWeaver CE only meant for Java development, or can it also be used for ABAP development?
regards,
Eric

Hi
for Java development you can user Eclipse or NWDS , which are both and the same .
And about the ABAP development in CE 7.1 in the developer studio is it not possible .
you are allowed for the java development . And about using Non-SAP java development tools
you can use the tools for java development , may the UI building ..... has to be build when compared to
CE 7.1 developer studio
Developer Studio for ABAP
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/7ef5ad90-0201-0010-b2b5-b112ca87e421
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/100dac80-f93c-2a10-15a1-a9ac1fd3166c
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/40af00ad-8080-2a10-88b5-cc4cec99d8ac
Thanks

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Hi
Thank you for reading my post
I read some documents about foreugn key and tables relation ships.
but i still can not understnad some stuff.
1-when we have a foreign key , we have two tables that we want to relate them together
in a way that one of ? table columns forced to be a value from ?? table column.
what is name of those two tables , i saw , child-parent , ..... which confuse me.
can some one please tell me correct name of those two tables ?
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can you point me to some resources that help me to find answers to this questions ?
or explain them to me ?
thank you for your time.

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That help?

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Hello,
I have a few questions, might be very elementary. Please clarify.
(Tried in "New to Java" Forum....but did not get much response)
What I know is : A "Java Platform" is composed of the Java language, a JVM, and the APIs. There is a spec. for the language, and another spec for JVM. Now, are there spec.s for the API as well ?
Another related question is : where exactly do the various flavours of the Java Platform (J2SE, J2EE, J2ME) differ ? I have seen some explanations where it seems to say that these editions have been created to give more appropriate support to different areas of applications. But, what I know to know is : what exact component of the Java Platform differs from one edition to another - language features, or the JVM, or the APIs ? And what is the kind of the change ?
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Hello,
I have a few questions, might be very elementary.
Please clarify.
(Tried in "New to Java" Forum....but did not get much
response)
What I know is : A "Java Platform" is composed of the
Java language, a JVM, and the APIs. There is a spec.
for the language, and another spec for JVM. Now, are
there spec.s for the API as well ?There are some specs which the API fulfills (see your other thread for examples). But not all classes in the API is covered by a specification.
Another related question is : where exactly do the
various flavours of the Java Platform (J2SE, J2EE,
J2ME) differ? What do you mean? There are different specifications for the different editions / flavours. They can differ both in API and VM.
I have seen some explanations where it
seems to say that these editions have been created to
give more appropriate support to different areas of
applications. But, what I know to know is : what
exact component of the Java Platform differs from one
edition to another - language features, or the JVM,
or the APIs ? All of them can differ. (Does it matter?)
Another question : what is it, that differs from one
JDK release to another, say from J2SE 1.3 to J2SE
1.4.0 ? Read the relese notes. New classes, some new methods, and also minor changes to the language. New JSRs had also been implemented.
I think the Java language spec itself rarely changes
(Is this right?). Depends on what you mean by rarely
It changed from 1.0 to 1.1, from 1.3 to 1.4 and from 1.4 to 1.5.
Also the VM spec rarely changes (is
this correct ?).It has changed a few times.
So, is it that only the APIs change
(new classes added, old ones modified, etc.) ?No
Kaj

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Hi,
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ent
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> Hello all,
> I have some basic questions on XI and File Adapter
> and hope you can help me. Any answer is appreciated.
>
>
> 1. Can I use NFS transport protocol to poll a file
> from a machine in the network, which is not the XI?
yes
> Or do I have to use FTP instead?
>
also you can do it
> 2. If I understand it correctly - when using the
> FTP-File Adapter, XI has the role of a ftp client. I
> have to run a ftp server on my distant machine. XI
> connects to FTP-Server and polls the file.
> Can it also be configured the other way round? The
> scenario I think of would be: FTP client installed on
> distant machine, which connects to FTP-Server(XI) and
> loads up a file. So XI would act as FTP Server.
> I know this works, if I install a ftp Server on the
> computer my XI runs on, and use the NFS-File Adapter
> to observe the folder. But I want to know, if I need
> a second, independant ftp server for this.
>
XI cannot act as FTP server, but it is always a client. When XI is reading (File sender adpater) when XIis writing than it is File Receiver adapter
> 3. And last but not least: When do I need the active
> ftp mode instead of passive?
>
It depends on your firewall configuration. The best and the fastests is active mode but not always available.
> Thanx a lot for your answers!
> Ilona

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http://help.sap.com/saphelp_scm50/helpdata/en/9b/954d3baf755b67e10000000a114084/frameset.htm
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-->Refer Above
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--> APO comes with a small BI inbuilt functionality. you can only perform certain functions using that BI.
Hope this helps.
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Hello
I am just starting to use DAC now and I have some basic questions about DAC..
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Thanks

Hi,
I have problems to understand you question but will do a try:
From a logical point of view objects can be only serialized reasonabely when they have a state of it's own which can be reestablished at a later point in time and space without further dependencies.
F.E. a "serialized file" would NOT make much sense cause it depends heavily on the state of the underlying file system.
You can't expected that is can be deserialized at a later point of time (physical file refered may not longer exists) or on another machine, where the serialized object was transported to.
Technical - at zero approach - it's more or less trivial. Simply implement Serializable and all non static, non transient fields of your object will be serialized automatically.
But there is a couple of pitfalls, you should study documentations regarding this feature.
Hope this helps
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Some basic questions about serialization

Hi,
I have some basic questions on serialization.
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Hi,
I have problems to understand you question but will do a try:
From a logical point of view objects can be only serialized reasonabely when they have a state of it's own which can be reestablished at a later point in time and space without further dependencies.
F.E. a "serialized file" would NOT make much sense cause it depends heavily on the state of the underlying file system.
You can't expected that is can be deserialized at a later point of time (physical file refered may not longer exists) or on another machine, where the serialized object was transported to.
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But there is a couple of pitfalls, you should study documentations regarding this feature.
Hope this helps
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used Connect/J and written a main method to manipulate a
database
created very simple applets to query or update a database with
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If you have time to correspond with us via e-mail, answer some very basic questions, and perhaps take a look at some code as we work through it, we would love to hear from you off-line ([email protected]). We would also appreciate knowing where to look for a good OOD sample application. Thanks.

Complete this tutorial and you will have a much better understanding.
http://java.sun.com/javaee/5/docs/firstcup/doc/toc.html
Also here is the tutorial for j2ee ( a little detailed but useful):
http://java.sun.com/javaee/5/docs/tutorial/doc/

Need answers for some basic question

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Getting started, basic questions on java 3d

hello I am Krishnakant Mane,
I have just started in java 3d and I am developing some edutainment softwares,
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1. what tools do I need to start doing java 3d? I have installed java 5 (v1.5) and what else I need.
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thanks.
Krishnakant.

The answer to all of your questions is here:
http://java.sun.com/products/java-media/3D/
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See the Search at the top of the page? Give it a try! ;)
:) jen

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