Difference between a static class and singleton

What is the difference between a static object and a singleton ?
for example:
1 )
public class MyObject {
static MyObject singleton ;
public static MyObject getInstance() {
if (singleton ==null) singleton = new MyObject ();
return singleton;
private MyObject () {
supe();
public void myMethod() {
2 )
public class MyObject {
private MyObject () {
supe();
public static void myMethod() {
If I need to call the myMethod() , witch of this solution is better ?
// case 1
MyObject.getInstance().myMethod()
// case 2
MyObject.myMethod()
.....

This has been discussed a lot here.
Use the forum's search feature, or, since it's not necessarily reliable, use google.
For many intents and purposes, they're equivalent.
However, with a singleton you can implement an interface, and get polymorphic behavior. You can't do with with a class full of static methods (which, by the way, is NOT a static class).

Similar Messages

Difference between static class and singleton?

Hi I wonder what could be the difference between static methods and singleton?
In singleton at any point of time there will be only one object existing in the JVM. We create singleton to avoid multiple object creation for that class.
If I make all the methods in the class as static also it does the same job. The memory will be allocated once. Even there wont be any object in this case, so time required for object creation also can be saved. looks like more efficient but still why need singleton?
This question is also posted in java programming forum. The thread is as follows:-
[Click on this to visit that thread |http://forum.java.sun.com/thread.jspa?threadID=5278517&tstart=0]
Edited by: murrayb9654 on Mar 25, 2008 8:20 AM

yawmark wrote:
Static class is a realization of singleton pattern.Not in any conventional sense.
~Especially since a static class is completely different from a class with all static methods.

Help with Xcode what is the difference between a Function, class and object

Hi all,
I'm new here and in programming in Xcode. My question is can somebody tell me what the difference is between functions classes and object. I will appreciate it if you can involve some articels or something else.
Many thanks,
RL6001

Do a Google search for object-oriented programming. When I did, I found the following tutorial, which explains what objects and classes are:
Object Oriented Programming Tutorial

Difference between calling static method and not static method?

Hi,
Suppose i want to write a util method, and many class might call this method. what is better? writing the method as static method or not static method. what is the difference. what is the advantace in what case?

writing the method as static method or not static
method. what is the difference.The difference is the one between static and non-static. Any tutorial or the JLs will clarify the difference, no need to repeat it here.
what is the advantace in what case?It's usually not like you have much of a choice. If you need access to an instance's attributes, you can't make it static. Otherwise, make it static.

Difference b/w Java Class and Bean class

hi,
can anybody please tell me the clear difference between ordinary java class and java Bean class. i know that bean is also a java class but i donno the exact difference between the both.
can anybody please do help me in understanding the concept behind the bean class.
Thank u in advance.
Regards,
Fazlina

While researching this question, I came across this answer by Kim Fowler. I think it explains it better than any other answer I have seen in the forum.
Many thanks Kim
Hi
Luckily in the java world the definition of components is a little
less severe than when using COM (I also have, and still occasionaly
do, worked in the COM world)
Firstly there are two definitions that need to be clarified and
separated: JavaBean and EnterpriseJavaBean (EJB)
EJB are the high end, enterprise level, support for distributed
component architectures. They are roughly equivalent to the use of MTS
components in the COM/ COM+ world. They can only run within an EJB
server and provide support, via the server, for functionality such as
object pooling, scalability, security, transactions etc. In order to
hook into this ability EJB have sets of interfaces that they are
required to support
JavaBeans are standard Java Classes that follow a set of rules:
a) Hava a public, no argument constructor
b) follow a naming patterns such that all accessor and modifier
functions begin with set/ get or is, e.g.
public void setAge( int x)
public int getAge()
The system can then use a mechanism known as 'reflection/
introspection' to determine the properties of a JavaBean, literally
interacting with the class file to find its method and constructor
signatures, in the example above the JavaBean would end with a single
property named 'age' and of type 'int' The system simply drops the
'set' 'get' or 'is' prefix, switches the first letter to lower case
and deduces the property type via the method definition.
Event support is handled in a similar manner, the system looks for
methods similar to
addFredListener(...)
addXXXListener
means the JavaBean supports Fred and XXX events, this information is
particularly useful for Visual builder tools
In addition there is the abiliity to define a "BeanInfo' class that
explicitly defines the above information giving the capability to hide
methods, change names etc. this can also be used in the case where you
cannot, for one reason or another, use the naming patterns.
Finally the JavaBean can optionally - though usually does - support
the Serializable interface to allow persistence of state.
As well as standard application programming, JavaBeans are regularly
used in the interaction between Servlets and JSP giving the java
developer the ability to ceate ojbect using standard java whilst the
JSP developer can potentially use JSP markup tags to interact in a
more property based mechanism. EJB are heaviliy used in Enterprise
application to allow the robust distribution of process
HTH.
Kim

Difference between a java program and a java class

Hi there,
What is the difference between a java program and a java class?

HI,
A java class is an object - described in a .class file - which has been given properties and behaviours and which can be instantiated in a program.
A java program( application ) consists of at least one class (one of which must be declared public) and which executes its main() method ( of the public class ) when it is started.
Every program is a class but not every class is a program.
Examples:
A java program
// this simple program will print out the first command line argument you put
// in after calling : java ScreenWriter "arguments"
class ScreenWriter
public static void main( String [] args )
if( args.length > 0 )
System.out.println( args[0] );
A java class
//the Math class is already defined in the java.lang package
//and contains a constant for PI
//So I can include the Math class with the PI constant in my simple program
//and now I have a program that involves my ScreenWriter class and the Math class too.
class ScreenWriter
public static void main( String [] args )
if( args.length > 0 )
System.out.println( args[0] );
System.out.println( "The value of Pi is: " + Math.PI );
When you see package and import declarations at the start of a program they are there to ensure the compiler knows which classes are used in the program.
Hope that helps,
Terry

What is the Difference between ? new Operator and Class.forName() ???

plz tel me ....
what is the Difference between ? new Operator and Class.forName() ??? ........

Class.forName(), takes the class name as parameter,
and loads that class in memory. But it doesn't create
any instance of that class.
That means static methods/variables are available for
use.
new keyword, checks if the class is loaded, if not
then loads that class, and then creates an instance
of that class.Class.forName actually returns the class object for that name (class - for -name). it might load it, if the class hasn't already been loaded, but it's misleading to say that's what that method does
your definition of 'new' is wrong, too. give the dukes back

Difference between "return this.var" and only "return var"

What is the difference between
get()
return variable;
and
get()
return this.variable;
}

class Foo {
int bar = 0;
public int doStuff(int bar) {
    bar *= 2;   //refers to the parameter bar
    return bar; //also refers to the parameter bar
public int doStuffToo(int bar) {
    bar *= 2;          //refers to the parameter bar
    return this.bar; //refers to the instance variable bar declared above
public static void main(String[] args) {
    Foo f = new Foo();
    System.out.println(f.doStuff(5));      //outputs 10
    System.out.println(f.doStuffToo(5)); //outputs 0
}

What's the difference between a web site and a web application?

I'm stumped trying to come up to a difference between a web site and a web application for myself. As I see it, a web site points to a specific page and a web application is more of some sort of 'portal' to content and information.
But where I'm stuck is that a web application is still viewed through a browser (is it not?) and a web site can still view content dynamically, making the line between web site and application prety gray.
For instance, does a web site using ASP.NET or AJAX (I assume ASP.NET is AJAX's proprietary sibling, if not, ignore ASP.NET AND concentrate on the AJAX), becomes a web application because it can retrieve data dynamically and asynchronously or would a website
using PHP and a CMS be more of a web application because it forms the pages on request, based on the request of the client and its content in its databse?
Or maybe I'm totally wrong here - what differenciates between a web application and a website?
http://support.peopleperhour.com/entries/68630566--C-mon-lets-Watch-The-Other-Woman-2014-full-movie-online-free
https://glossicom.zendesk.com/entries/68643806--%D0%BC-v%C9%AA%C9%9Bc-%C3%A4st-Watch-The-Lucy-2014-full-movie-free
https://cloudhance.zendesk.com/entries/68115098--%D0%BC-v%C9%AA%C9%9Bc-%C3%A4st-Watch-The-Lucy-2014-full-movie-free
This is totally personal and subjective, but I'd say that a website is defined by its content, while a webapplication is
defined by its interaction with the user. That is, a website can plausibly consist of a static content repository that's dealt out to all visitors, while a web application depends on interaction and requires programmatic user input and data processing.
For example, a news site would be a "website", but a spreadsheet or a collaborative calendar would be web "applications". The news site shows essentially the same information to all visitors, while the calendar processes individual data.
Practically, most websites with quickly changing content will also rely on a sophisticated programmatic (and/or database) backend, but at least in principle they're only defined by their output. The web application on the other hand is essentially a program that
runs remotely, and it depends fundamentally on a processing and a data storage backend.
http://support.peopleperhour.com/entries/68125597--%D0%BC-v%C9%AA%C9%9Bc-%C3%A4st-Watch-The-Lucy-2014-full-movie-free
https://cloudhance.zendesk.com/entries/67541393--Watch-The-Godzilla-2014-free-Online-Full-Movie-HD-Quality
http://support.peopleperhour.com/entries/68168787--Watch-The-Godzilla-2014-free-Online-Full-Movie-HD-Quality
https://glossicom.zendesk.com/entries/68161538--Watch-The-Godzilla-2014-free-Online-Full-Movie-HD-Quality
There is no real "difference". Web site is a more anachronistic term that exists from the early days of
the internet where the notion of a dynamic application that can respond to user input was much more limited and much less common. Commercial websites started out largely as interactive brochures (with the notable exception of hotel/airline reservation sites).
Over time their functionality (and the supporting technologies) became more and more responsive and the line between an application that you install on your computer and one that exists in the cloud became more and more blurred.
If you're just looking to express yourself clearly when speaking about what you're building, I would continue to describe something that is an interactive brochure or business card as a "web site" and something that actually *does something that feels
more like an application as a web app.
The most basic distinction would be if a website has a supporting database that stores user data and modifies what the user sees based on some user specified criteria, then it's probably an app of some sort (although I would be reluctant to describe Amazon.com
as a web app, even though it has a lot of very user-specific functionality). If, on the other hand, it is mostly static .html files that link to one another, I would call that a web site.
Most often, these days, a web app will have a large portion of its functionality written in something that runs on the client (doing much of the processing in either javascript or actionscript, depending on how its implemented) and reaches back through some
http process to the server for supporting data. The user doesn't move from page to page as much and experiences whatever they're going to experience on a single "page" that creates the app experience for them.

...can i make as many iweb websites as i want? ...and as many blogs as i want? ...i have never made one before....
....although, i do have my own small business and i do have a website that i paid a guy to make and also host....(which is a waste of $$$$ in my opinion as i think i can do a better job making one myself through iweb) ....
...anyways, i know it is splitting hairs but what exactly is the diff b/w a blog and a website ....i am under the impression that a blog is just a personal newsletter sort of thing,...?

Difference between ECC 6.0 and earlier versions

Hi,
one of the difference between ECC 6.0 and earlier versions is that instead 'WS_UPLOAD' and 'WS_DOWNLOAD' in ECC we should use 'GUI_UPLOAD' and 'GUI_DOWNLOAD' respectively.
(of course SPDD and SPRO tcodes is known by everone i suppose)
Similarly can u all put down some differences here, atleast one entry by each, I think we can make a good docu. I have searched the net for the differences but could not get much, so by each of us contributing one each, it would become good docu..for all of us.
Thanx in advance

Unicode Errors Encountered and their Solutions
E1. In u201CTEXT MODEu201D the u201CENCODINGu201D addition must be specified.
     Error:
     OPEN DATASET FILE FOR OUTPUT IN TEXT MODE.
     Solution:
     OPEN DATASET FILE FOR OUTPUT IN LEGACY TEXT MODE.
E2. In Unicode, DESCRIBE DISTANCE can only be used with the IN BYTE MODE or IN
      CHARACTER MODE addition.
     Error:
     DESCRIBE DISTANCE BETWEEN T_KOMK AND T_KOMK-HIEBO01 INTO BPOS.
     Solution:
DESCRIBE DISTANCE BETWEEN T_KOMK AND T_KOMK-HIENR01 INTO BPOS
IN CHARACTER MODE.
E3. u201CUSR02-UFLAGu201D must be a byte-type field (Typ X or XSTRING )
     Error:
     IF USR02-UFLAG O YULOCK.
     Solution: Since the data type of USR02-UFLAG is type INT and is compared with data type
                X u2013 Hence the error. So we define a new variable ZULOCK and assign the
                value of USR02-UFLAG to ZULOCK.
              New variable
              DATA: ZULOCK(1) TYPE X.   "APBRP00
              Assign value
                            ZULOCK = USR02-UFLAG.
        Compare -
               IF ZULOCK = YULOCK.   u201Creplace IF USR02-UFLAG O YULOCK.
E4. HT cannot be converted to a Character type field
Error :
WRITE ht TO t_data+10(2).
Solution : Since the data type of ht is a type u2018Xu2019 and the data is been transfer to
         t_data which has a data type u2018Cu2019. value of one data type cannot be copy to
         another data type where one of them is type string .Hence the error occur,
         so the data type of ht is been change to Type u2018Cu2019
     OR
           A Tab ( value 09 ) is introduced as part of the row. The value 09 is not converted in Unicode environment. Instead we need to use class
     Error:
          DATA: BEGIN OF ht,
               x(1) TYPE x VALUE '09',
          END OF ht.
     Solution:
              Define Class after the Tables definition.
                   CLASS cl_abap_char_utilities DEFINITION LOAD.
              Data Defination : Comment internal table HT and define a variable HT type C.
       *   Insert + APRIA00 05/02/2007 Unicode project
       *   DATA: BEGIN OF ht,
     *         x(1) TYPE x VALUE '09'
       *   END OF ht.
     *   Insert - APRIA00 05/02/2007 Unicode project
       DATA HT type C.
       Before using HT assign Horizontal tab.
                 Ht = CL_ABAP_CHAR_UTILITIES=>HORIZONTAL_TAB.
E5. In Unicode programs the u201C#u201D cannot appear in names, as it is does here in the name    u201C#LINESu201D
     Error :
     #LINES                 TYPE I,
     Solution : Since the # is used in the start of name, it is not allowed. We need to
              remove it.
     Solution for the above
     V_LINES                 TYPE I,
E6. In u201CTEXT MODEu201D the u201CENCODINGu201D addition must be specified as well as the addition was required FOR OUTPUT,FOR INPUT, FOR APPENDING OR FOR UPDATE was expected.
     Error:
     OPEN DATASET PATH_NAME IN TEXT MODE.
     Solution:
     Download =     OPEN DATASET PATH_NAME FOR OUTPUT IN LEGACY TEXT MODE.
     Upload        = OPEN DATASET AUSZUG-FILE IN TEXT MODE FOR INPUT ENCODING DEFAULT.
E7. u201CTABu201D must be a character-type data object( data type C,N, D, T or String). Field string)
     Error:
            data: begin of tab,                   "Excel Parameter Split at TAB
        t type x value '09',          "Tabulator
       end of tab.
            concatenate 'Material' 'Package Status'
                into z_download-line separated by tab.
            ( In the above command the two field are to be separated with a horizontal Tab. The earlier      way of assigning the tab value u201809u2019 will not work in Unicode environment.
     Solution:
     Define a class just after the Table defination.
          CLASS cl_abap_char_utilities DEFINITION LOAD.
            Define variable Tab as shown below :
          Data : TAB           TYPE C.
     Before the concatenate statement assign the value of Tab using pre-defined attributes.
          TAB = CL_ABAP_CHAR_UTILITIES=>HORIZONTAL_TAB.
E8. Upload/Ws_Upload and Download/Ws_Download are obsolete, since they are not Unicode-
      enabled; use the class cl_gui_frontend_services
     Error-1: Function WS_DOWNLOAD is obsolete in Unicode environment.
            call function 'WS_DOWNLOAD'
                 exporting
                      filename = zfilename
                 tables
                      data_tab = z_download.
     Solutions-1: Instead of WS_DOWNLOAD use GUI_DOWNLOAD.
CALL FUNCTION 'GUI_DOWNLOAD'
EXPORTING
*   BIN_FILESIZE                  =
    FILENAME                      = zfilename
TABLES
    DATA_TAB                      = z_download.
E9. The "/" character is reserved for identification of namespaces. It must be entered twice.
        The name of a namespace must be at least 3 characters long.
     Error :
                 U/N(3)        TYPE C, "U/N    --> ERSETZT DURCH SPACE
     Solution :
     * Special character can not be used to define a data variable
     *      U/N(3)        TYPE C, "U/N    --> ERSETZT DURCH SPACE
              U_N(3)        TYPE C, "U/N    --> ERSETZT DURCH SPACE
     * Insert - APSUS02 07/02/2007 Unicode Project
E10. "LP_TAB" and "CS_TAB" are not mutually convertible. In Unicode programs,
         "LP_TAB" must have the same structure layout as "CS_TAB", independent of the length
         of a Unicode character.
     Error : This error is encountered when data from one internal table is copied to another
                         internal table which different structure. In this case its LP_TAB & CS_TAB.
                 LP_TAB[] = CS_TAB[].
     Solution :
          * Replace + APSUS02 07/02/2007 Unicode Project
*   LP_TAB[] = CS_TAB[].
              move-corresponding CS_TAB to LP_TAB.
          * Replace + APSUS02 07/02/2007 Unicode Project
E11. Could not specify the access range automatically. This means that you need a RANGE
          addition.
     Error : Range need to be specified as an addition to the command.
            DO 4 TIMES VARYING HELP_CHAR FROM ABCD(1) NEXT ABCD+1(1).
           Solution :
            DO 4 TIMES VARYING HELP_CHAR FROM ABCD(1) NEXT ABCD+1(1)
          * Insert + APSUS02 07/02/2007 Unicode Project.
                                                      RANGE ABCD+0(4).
* Insert - APSUS02 07/02/2007 Unicode Project.
E12 . Processing Terminated Error code: Error in opening /
                                          Path not found when downloading to Unix directory.
     Error : PARAMETER: outfile(92) DEFAULT
              '/CP/interface/NPP/data/MX/cbslaprcpts'
                    LOWER CASE,
               kmxmstrd AS CHECKBOX.
            This error is encountered when the path is missing. The above path is related to CCP.
     Solution: For testing purpose comment the original path and replace it with
                                 /CP/interface/CCD/Unicode_test/
E13.    Upload/Ws_Upload and Download/Ws_Download are obsolete, since they are not                                                                       Unicode- enabled; use the class cl_gui_frontend_services
     Error: Function WS_UPLOAD is obsolete in Unicode environment. (During UCCHECK)
               Call function 'WS_UPLOAD'
       Exporting
            Filename                = zfilename
            Filetype                = u2018DATu2019
       Tables
            data_tab                = z_upload
       Exceptions
            Conversion_error        = 1
            file_open_error         = 2
            file_read_error         = 3
            invalid_table_width     = 4
            invalid_type            = 5
            no_batch                = 6
            unknown_error           = 7
            gui_refuse_filetransfer = 8
            others                  = 9.
     Solution: Instead of WS_UPLOAD use TEXT_CONVERT_XLS_TO_SAP. Do not use temporary file put the file name as it is.
1) First define a type pool and a variable of type truxs_t_text_data.
TYPE-POOLS: truxs.
DATA: it_raw TYPE truxs_t_text_data.
     2) Use this it_raw in the function module in parameter i_tab_raw_data. Put file name and the internal table in the function module.
CALL FUNCTION 'TEXT_CONVERT_XLS_TO_SAP'
    EXPORTING
*     I_FIELD_SEPERATOR        =
*      i_line_header            = ' '
      i_tab_raw_data           = it_raw       " WORK TABLE
      i_filename               = zfilename
    TABLES
      i_tab_converted_data     = z_upload[]    "ACTUAL DATA
   EXCEPTIONS
      conversion_failed        = 1
      OTHERS                   = 2.
     Comment u201Ci_line headeru201D. It takes the first/ header line of the file which is to be uploaded.
Put square brackets after internal table as shown above.
E14.    CURSORHOLD may not be converted into a number.
     Error: GET CURSOR LINE CURSORHOLD VALUE CURSOR_HOLD.
     Solution: In the declaration part of CURSORHOLD, one field is of u2018Pu2019 type and one field is of u2018Iu2019 type, which is not allowed in Unicode environment.So change the the type of it to NUMC.

Difference between Abstract portal Component and JSPDyn page.

Hi Experts,
What is the difference between Abstract portal Component and JSPDyn page.
Thanks,
Jay.

Hi,
The PDK provides two methods for creating a portal component:
Abstract Portal Component
The Abstract Portal Component class offers a lean method for writing HTML commands to the Web client as well as for basic event handling. It is an implementation of the IPortalComponent, which is the central abstraction of the Portal Component API.
DynPage
The Page Processor Component, which extends the Abstract Portal Component, returns a DynPage. It provides more sophisticated event handling. Controls that produce events (such as buttons and checkboxes) have an event attribute that contains the name of the event handling method. This event handling method is invoked by the DynPage when it occurs.
The JSPDynPage is an implementation of the DynPage and allows the use of the DynPage in combination with JSP (Java Server Pages).
The PDK documentation and examples focus on the DynPage. Easier event handling and the separatation of content development (JSP) from application development (Java) make the DynPage a better choice for components with interaction and changing content.
For more details, Refer thes thread,
https://fortress.wa.gov/dop/portal/irj/portalapps/com.sap.portal.pdk.basic.portalcomponentimplementation/docs/jspdynpage.html
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/f0b3e9d5-b2af-2a10-20ba-9f6ce6b1a27f
Hop it helps..
GS
Edited by: Sathishkumar GS on Apr 14, 2008 2:07 PM

Static class and clustering

          I have a static class that I use to cache some values during a batch process. The
          batch process uses a JMS queue to parcel our identical units of work to MDBs.
          I want this to scale using a cluster with the same MDBs on multiple machines.
          Everything works fine except that I can't figure out how to tell my cache to clear
          itself out on every node between batch runs. Is there a pattern or solution to
          this problem?
          What I've tried is to create a stateless session bean method that clears my cache.
          At the begining of my batch job, (which is a stateless session bean call) I call
          this method on each server in the cluster by getting the remote interface for
          the stateless bean via the different URLs of the servers. However, the session
          bean method always executes on the one server where I make the call. It's as if
          WebLogic gives me back a local interface instead of the remote interface that
          I asked for.
          Any ideas would be appreciated.
          Colin


... static class and static method.I have never heard of a thing called "static class". Perhaps you mean a class with only static members?
My design approach (which is bound to needs of the moment and seldom to library-development or future re-use, since both is harder than most developers realize) is to develop straight without caring too much about static or not. When a method is done, debugged and works well, it happens that other objects access this method as well.
It may happen that I just want to use this single method and almost nothing else of the object. If that is the case, I can start looking if it's a Good Thing(tm) to make the method static, so no object creation is needed just for the one method. Sometimes it can be done, sometimes not.
But that's just me and you'll find quite a lot of coders that'll advice you to decide what's static and what not before you start coding. And that's as good an advice as most others you can get.
In the end it's your decision, so start fiddling around and see what fits best for you.
-T-

Difference between fully qualified name and Canonical name

CAn annyone xplain Difference between fully qualified name and Canonical name

If you dont know then don't replyYou were given a link directly to the answer. The state of my knowledge is therefore (a) irrelevant and (b) not proven by anything in this thread.
Who asked [you] to reply
You* did, when you posted here.
I know how to get from java language specificationClearly not, or you wouldn't still be posting here.
I need clarification for what is in java lang specification..It seems clear enough to me. What part of "A member class or member interface M declared in another class C has a canonical name if and only if C has a canonical name. In that case, the canonical name of M consists of the canonical name of C, followed by ".", followed by the simple name of M." didn't you understand?

What is the difference between System.out.println() and System.out.print()?

Hi everyone,
I am only a new comer and know very little about Java. I will appreciate a lot if anyone teaches me what the difference between two method println and print is? Thank you so much.

The PrintStream class defines a number of print() methods that ... print
things. System.out is a commonly used PrintStream.
The difference between the print(...) and println(...) methods is that the
second one prints a new line at the end. What it actually prints varies
from system to system: sometimes it will output a '\n' sometimes not.
There is a system property called line.separator that determines
how a new line is output.

What is difference between tha master data and tranction data

Hi, Gurus
this is sudhakar
i want to no what is the difference between the transaction data and master data give with examples .
Thanks
sudhakar

Hi,
The most important data classes are master data, transaction data, organizational data and system
data.
Master data is data that is rarely modified. An example of master data is the data of an address file, for
example the name, address and telephone number.
Transaction data is data that is frequently modified. An example is the material stock of a warehouse,
which can change after each purchase order.
Organizational data is data that is defined during customizing when the system is installed and that is
rarely modified thereafter. The country keys are an example.
System data is data that the R/3 System itself needs. The program sources are an example
for more info go through..
[http://help.sap.com/saphelp_nw70/helpdata/]
regards,
NR

Difference between a static class and singleton

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