Java & ABAP

Hi,
Can anybody tell me the advantages of java over abap
and also the differnces between abap and java.

HI,
1) JAVA is an open standard. Where as ABAP is SAP property.
2) ABAP has been developed keeping in mind the advantages that are offered by JAVA and other OO langauges.
Some of the important differences are
ABAP does not support OVER LOADING OF METHODS ( This is achevied using the OPTIONAL parameters in ABAP).
ABAP you can create class which is FINAL and ABSTRACT java does not support this. (ABAP supports this and this class can have only CLASS-DATA and CLASS-METHODS).
STATIC in ABAP is USER specific where STATIC in JAVA is Application level.
Regards,
Sesh
Message was edited by:
Seshatalpasai Madala

Similar Messages

What are the pros and cons of installing java+abap stack for portal?

Hi all,
1.What are the pros and cons of installing java+abap stack for portal?
2.what effect it does on the ume options to be choosen??
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Hi Rajendra,
The NetWeaver Installation Master Guide offers some good scenarios on the pros and cons:
https://websmp201.sapag.de/~sapidb/011000358700005412792005E.pdf
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Hi,
ABAP Proxy :
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Hello,
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let us make it simple......
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Hi Sunil,
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http://service.sap.com/instguides -> Netweaver 04 -> Planning -> Technical Infrastructure Guide - SAP Enterprise Portal 6.0
and
http://service.sap.com/instguides -> Netweaver 04 -> Installation -> Installation Guide - SAP EP 6.0 (SR1) on WebAS 6.40
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Hello,
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Thanks in advance!
Best regards,
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Hi Stephan,
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Yes.
"How is it possible to minimize the downtime of the system during the Java SPS installation?"
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Best Regards,
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Check the notes and suggestions on this threads,
ADS: ICM_HTTP_CONNECTION_FAILED
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Hello Gurus,
I have installed a WebAS Java server a long time ago (but my sever is 6.40 SP14), but now i want to install a WebAS ABAP server on my preview installed WebAS Java Server in order to have an full WebAS Java + Abap server. Now my question is do i have to re-install all over again or can i do some kind of upgrade? and how can i do that? is someone have an documentation for do this???
Thanx in advance
MC

Hello Victor,
Sorry, I meant "emphatic"... my mistake...
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For MI, ABAP+JAVA is required. And you can only install new one
, you already answer my initial question: i have to reinstall all WebAs... now you really loose me when you started to talk about business packages...and integration with the portal....etc etc etc. i dont need to integrate anything with portal...what i need is both stacks on my WebAs...so i'll probably take your word and install a "MI System" (another WebAs separated from the one that i've installed and configure MI on that...
Sorry for the errors in my writing...if there is any
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Mariana

Sequence of steps to install (Java + ABAP) on windows

Hi all,
I want to install the SAP Netweaver 2004 server(ABAP + Java ) on windows box with MSSQL 2000 as backend.
I wanted to know the sequnce that needs to be followed to install the component.
I went in the following:
a)I installed the MSSQL Server 2004 SP4
b)I installed the ABAP part.
Now when i tried to start the server from the SAP Console ,the process
(disp + work) changes from green to disable.
If i check the logs i get the following
Thu Jun 28 16:26:07 2007
ERROR => W0 (pid 2912) died [dpxxdisp.c   12170]
ERROR => W1 (pid 2600) died [dpxxdisp.c   12170]
my types changed after wp death/restart 0xbf --> 0xbe
ERROR => W2 (pid 2392) died [dpxxdisp.c   12170]
my types changed after wp death/restart 0xbe --> 0xbc
ERROR => W3 (pid 156) died [dpxxdisp.c   12170]
my types changed after wp death/restart 0xbc --> 0xb8
ERROR => W4 (pid 2188) died [dpxxdisp.c   12170]
ERROR => W5 (pid 2684) died [dpxxdisp.c   12170]
my types changed after wp death/restart 0xb8 --> 0xb0
ERROR => W6 (pid 796) died [dpxxdisp.c   12170]
my types changed after wp death/restart 0xb0 --> 0xa0
ERROR => W7 (pid 1888) died [dpxxdisp.c   12170]
my types changed after wp death/restart 0xa0 --> 0x80
DP_FATAL_ERROR => DpWPCheck: no more work processes
DISPATCHER EMERGENCY SHUTDOWN ***
increase tracelevel of WPs
killing W0-2912 (SIGUSR2)
ERROR => DpWpKill(2912, SIGUSR2) failed [dpxxtool.c   2468]
killing W1-2600 (SIGUSR2)
ERROR => DpWpKill(2600, SIGUSR2) failed [dpxxtool.c   2468]
killing W2-2392 (SIGUSR2)
ERROR => DpWpKill(2392, SIGUSR2) failed [dpxxtool.c   2468]
killing W3-156 (SIGUSR2)
ERROR => DpWpKill(156, SIGUSR2) failed [dpxxtool.c   2468]
killing W4-2188 (SIGUSR2)
ERROR => DpWpKill(2188, SIGUSR2) failed [dpxxtool.c   2468]
killing W5-2684 (SIGUSR2)
ERROR => DpWpKill(2684, SIGUSR2) failed [dpxxtool.c   2468]
killing W6-796 (SIGUSR2)
ERROR => DpWpKill(796, SIGUSR2) failed [dpxxtool.c   2468]
killing W7-1888 (SIGUSR2)
ERROR => DpWpKill(1888, SIGUSR2) failed [dpxxtool.c   2468]
NiWait: sleep (10000 msecs) ...
NiISelect: timeout 10000 ms
NiISelect: maximum fd=1629
NiISelect: read-mask is NULL
NiISelect: write-mask is NULL
Thu Jun 28 16:26:17 2007
NiISelect: TIMEOUT occured (10000 ms)
dump system status
Workprocess Table (long)               Thu Jun 28 10:56:17 2007
========================
No Ty. Pid      Status Cause Start Err Sem CPU    Time Program Cl User         Action                    Table
0 DIA     2912 Ended         no      1   0             0
1 DIA     2600 Ended         no      1   0             0
2 UPD     2392 Ended         no      1   0             0
3 ENQ      156 Ended         no      1   0             0
4 BTC     2188 Ended         no      1   0             0
5 BTC     2684 Ended         no      1   0             0
6 SPO      796 Ended         no      1   0             0
7 UP2     1888 Ended         no      1   0             0
Dispatcher Queue Statistics               Thu Jun 28 10:56:17 2007
===========================
--------++++--
+
Typ
now
high
max
writes
reads
--------++++--
+
NOWP
0
3
2000
10
10
--------++++--
+
DIA
5
5
2000
5
0
--------++++--
+
UPD
0
0
2000
0
0
--------++++--
+
ENQ
0
0
2000
0
0
--------++++--
+
BTC
0
0
2000
0
0
--------++++--
+
SPO
0
0
2000
0
0
--------++++--
+
UP2
0
0
2000
0
0
--------++++--
+
max_rq_id          13
wake_evt_udp_now     0
wake events           total     9, udp     7 ( 77%), shm     2 ( 22%)
since last update     total     9, udp     7 ( 77%), shm     2 ( 22%)
Dump of tm_adm structure:               Thu Jun 28 10:56:17 2007
=========================
Term    uid man user    term   lastop mod wp ta   a/i (modes)
Workprocess Comm. Area Blocks               Thu Jun 28 10:56:17 2007
=============================
Slots: 300, Used: 1, Max: 0
--------++--
+
id
owner
pid
eyecatcher
--------++--
+
0
DISPATCHER
-1
WPCAAD000
NiWait: sleep (5000 msecs) ...
NiISelect: timeout 5000 ms
NiISelect: maximum fd=1629
NiISelect: read-mask is NULL
NiISelect: write-mask is NULL
Thu Jun 28 16:26:22 2007
NiISelect: TIMEOUT occured (5000 ms)
Shutdown server ...
DpModState: buffer in state MBUF_PREPARED
NiBufSend starting
NiIWrite: write 110, 1 packs, MESG_IO, hdl 3, data complete
MsINiWrite: sent 110 bytes
MsIModState: change state to SHUTDOWN
DpModState: change server state from STARTING to SHUTDOWN
Switch off Shared memory profiling
ShmProtect( 57, 3 )
ShmProtect(SHM_PROFILE, SHM_PROT_RW
ShmProtect( 57, 1 )
ShmProtect(SHM_PROFILE, SHM_PROT_RD
DpWakeUpWps: wake up all wp's
Stop work processes...
Stop gateway
killing process (432) (SOFT_KILL)
Stop icman
killing process (2124) (SOFT_KILL)
Terminate gui connections
[DpProcDied] Process lives (PID:432 HANDLE:1600)
waiting for termination of gateway
NiWait: sleep (1000 msecs) ...
NiISelect: timeout 1000 ms
NiISelect: maximum fd=1629
NiISelect: read-mask is NULL
NiISelect: write-mask is NULL
Thu Jun 28 16:26:23 2007
NiISelect: TIMEOUT occured (1000 ms)
Thu Jun 28 16:26:24 2007
[DpProcDied] Process died (PID:432 HANDLE:1600)
[DpProcDied] Process lives (PID:2124 HANDLE:1588)
waiting for termination of icman
NiWait: sleep (1000 msecs) ...
NiISelect: timeout 1000 ms
NiISelect: maximum fd=1629
NiISelect: read-mask is NULL
NiISelect: write-mask is NULL
Thu Jun 28 16:26:25 2007
NiISelect: TIMEOUT occured (1000 ms)
[DpProcDied] Process died (PID:2124 HANDLE:1588)
DpHalt: cancel all lcom connections
MPI CancelAll 2 -> 0
MPI DeleteAll 2 -> 0
NiIMyHostName: hostname = 'pun-idmqa-vm1'
AdGetSelfIdentRecord: >                                                                           <
AdCvtRecToExt: opcode 60 (AD_SELFIDENT), ser 0, ex 0, errno 0
AdCvtRecToExt: opcode 4 (AD_STARTSTOP), ser 0, ex 0, errno 0
DpConvertRequest: net size = 163 bytes
NiBufSend starting
NiIWrite: write 562, 1 packs, MESG_IO, hdl 3, data complete
MsINiWrite: sent 562 bytes
send msg (len 110+452) to name          -, type 4, key -
detach from message server
***LOG Q0M=> DpMsDetach, ms_detach () [dpxxdisp.c   9945]
NiBufSend starting
NiIWrite: write 110, 1 packs, MESG_IO, hdl 3, data complete
MsINiWrite: sent 110 bytes
MsIDetach: send logout to msg_server
MsIDetach: call exit function
DpMsShutdownHook called
NiSelClear: removed hdl 3 from selectset
MBUF state OFF
AdGetSelfIdentRecord: >                                                                           <
AdCvtRecToExt: opcode 60 (AD_SELFIDENT), ser 0, ex 0, errno 0
AdCvtRecToExt: opcode 40 (AD_MSBUF), ser 0, ex 0, errno 0
AdCvtRecToExt: opcode 40 (AD_MSBUF), ser 0, ex 0, errno 0
blks_in_queue/wp_ca_blk_no/wp_max_no = 1/300/8
LOCK WP ca_blk 1
make DISP owner of wp_ca_blk 1
DpRqPutIntoQueue: put request into queue (reqtype 1, prio LOW, rq_id 19)
MBUF component DOWN
NiBufClose: clear extensions for hdl 3
NiBufSetStat: bufstat of hdl 3 changed from OK to OFF
NiICloseHandle: shutdown and close hdl 3 / socket 1608
MsIDetach: detach MS-system
EsCleanup ....
***LOG Q05=> DpHalt, DPStop ( 3520) [dpxxdisp.c   8478]
Good Bye .....
What can be the problem.
Best Regards
Manoj

Hi
- Is the installation successful ?
- if you get:
Thu Jun 28 16:26:07 2007
ERROR => W0 (pid 2912) died [dpxxdisp.c 12170]
    at least show me the error in dev_w0 during Thu Jun 28 16:26:07 2007
- also, what is the output of R3trans -dx ?
cheers,
Vincent

RFC destination Java = ABAP system to wrong system

Hello everyone,
I have a NW04 Java system (WebAs 640, SP19), which has an RFC destination to an ABAP system.
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We have a self developed java application which uses this RFC connection.
When we call the application using only the <b>not</b>-fully-qualified hostname the RFC connection to the old (SID1) is used, but the destination is defined with SID2.
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Hi Mantosh,
it's an RFC connection entered in Visual Administrator of the Java System (service Destinations), so there's no possibility to set an RFC type like in SM59.
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Java ,abap and XSLT mapping

Hi all,
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regards
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Hi
All mapping related links
There is no hard and fast rule for using the mapping techniques.
Graphical Mapping is used for simple mapping cases. When, the logic for your mapping is simple and straight forward and it does not involve any complex logic.
Java and XSLT mapping are used when graphical mapping cannot help you and you have multilevel hierarchy structure data.
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Java Mapping uses 2 types of parsers. DOM and SAX. DOM is easier to use with lots of classes to help you create nodes and elements, but, DOM is very processor intensive.
SAX parser is something that parses your XML one after the other, and so is not processor intensive. But, it is not exactly easy to develop either.
To know more about each of them please go thru the following links. And if you ask me your which is better, it depends basically on the scenario you implementing and the complexity involved. Anyways please go thru the following links:
Graphical mapping
http://help.sap.com/saphelp_nw04/helpdata/en/6d/aadd3e6ecb1f39e10000000a114084/content.htm
http://help.sap.com/saphelp_nw04/helpdata/en/43/c4cdfc334824478090739c04c4a249/content.htm
/people/bhanu.thirumala/blog/2006/02/02/graphical-message-mapping-150-text-preview
http://www.sapgenie.com/netweaver/xi/mapping1.htm
/people/alessandro.guarneri/blog/2006/01/26/throwing-smart-exceptions-in-xi-graphical-mapping
XSLT mapping
http://help.sap.com/saphelp_nw04/helpdata/en/73/f61eea1741453eb8f794e150067930/content.htm
http://www.w3.org/TR/xslt20/
JAVA mapping
http://help.sap.com/saphelp_nw04/helpdata/en/e2/e13fcd80fe47768df001a558ed10b6/content.htm
DOM parser API
http://java.sun.com/j2se/1.4.2/docs/api/org/w3c/dom/package-frame.html
ABAP mapping
/people/r.eijpe/blog
To know more about the value mapping tools for the SAP Exchange Infrastructure (XI), please go thru the following link:
http://www.applicon.dk/fileadmin/filer/XI_Tools/ValueMappingTool.pdf
To get an idea as to what value mapping is, please go thru the following links:
http://help.sap.com/saphelp_nw04/helpdata/en/13/ba20dd7beb14438bc7b04b5b6ca300/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/f2/dfae3d47afd652e10000000a114084/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/2a/9d2891cc976549a9ad9f81e9b8db25/content.htm
most of the links that I have provided also helps you get the step by step procedure of doing the same. And also involves the procedure to implement certain advanced features.
And please go through this link which clearly explains the 3 types of mappings.
/people/ravikumar.allampallam/blog/2005/02/10/different-types-of-mapping-in-xi
regards
Prasad

Installing SAP NetWeaver 2004s Trial version (JAVA & ABAP )

Hi All.
Is it possible to install both versions of SAP NetWeaver 2004s (ABAP & JAVA) in the same machine ? Is there a tutorial or step by step ?
Thanks.

Hi,
It is possible. have a look on this thread and try to search in forum too. u will find a lot of disscussion on this topic before.
abap on java stack.
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Regards
Subhash

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Hi all,
I have installed a PI system with the following Usage Types
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PI
EP
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Hi Aditya,
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I hope it will be useful
Regards

BSP / Web-Dynpro (Java / Abap) what to use in this case ?

Hi all,
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Maybe we plan for the next release to convert our app to a Web based app and we discuss what SAP technology we should use for that.
Here are my questions :
- When and why should we use Web-Dynpro (Java) ?
- Can't we use BSP ?
- Is there any future for BSP ?
- When will Web-Dynpro for ABAP be released (actually we are not a Java Shop so Abap is prefered)?
Hope someone can answer my question.
Greetings
Henning

If you don't mind, I am going to terminate discussion of Web Dynpro ABAP here. It is not that I want to, but we are in a difficult position with this development, and can not really discuss it too much.
But, let me first make a few (last) comments:
(*) BSP is available since WebAS 610 (which is now nearly at the end of its lifetime). WebAS 620 is the main platform out there, with NW04 (WebAS 640) now shipping, and the next product is inevitably coming. If you keep in mind that SAP supports each release at least 7 years, and we will be shipping BSP in an upcoming release, you can see that with BSP you are not going to left stranded for many years to come.
(*) Web Dynpro Java is out and shipping. A very nice development environment. You can build nice things with it.
(*) Web Dynpro ABAP: it will become a very nice product as well. We should know :). But, it will definitely not ship on NW04 platform. Which unfortunately means the next great NW shipment (both naming and date is not available).
From our experience, most people seem to make their decisions based on the available Java versus ABAP skills in the shop. However, the other factor to look at is also "pixel perfect" rendering. Only with BSP can you influence the rendering. Web Dynpro is more a development platform for business applications, and as such they must conform to the designated model/concepts, etc.
brian

Abap+java abap-user and portal-role PROBLEM?? help

We have the ABAP+java add-on install.
The UME is by default ABAP engine.
From Portal:
1 I create a portal user, it ALWAYS creates ABAP user in ABAP engine.
2. I create a portal role, it creates a role in the Portal.
3. When I assign the user this portal role,
having worksets and pages,
I get no pages or worksets shown in the portal page as soon
user logs in.
Can you help configure this so that I could see the pages and iviews inside this workset when user logs in.
Thanks a lot.

Hi Mike,
You did right,
Just check the Entry Point Property of your iView, page and workset to YES
there are two radio buttons yes and no select the yes one,
you can see your pages afte rlogin with the new user.
Regards
Abhimanyu L

Java & ABAP

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