About main function

When I write the main function,I'm always puzzled by the parameter which is send to the main function.
For example: main(String args[]) and main(String[] args),What kind of difference is between the "String args[]" and "String[] args"?

"String args[]" and "String[] args" are exactly equivalent.
An array of strings is like a bed of roses, or a rosebed: you can take your pick.
Edited by: pbrockway2 on Apr 2, 2008 6:18 PM
Ah ha!
"String args[]" and "String[] args" appears as "String args[]" and "String[] args"

Similar Messages

Can anybody tell me about SD Functionality and the main tables used in SD

Hi,
Can anybody tell me about SD Functionality and the main tables used in SD.
Thanks,
bsv.

Hi
SD FLOW
SD Flow Cycle:
INQUIRY ( VA11)
|
QUOTATION (VA21)
|
PURCHASE ORDER (ME21)
|
ORDER CONFIRMATION (VA01)
|
PICKING LIST (VL36)
|
PACKING LIST - (VL02, VL01)
|
SHIPPING (VT01)
|
INVOICE (VF21, VF01)
|
AR
Enquiry - Customer enquires about the Products services that were sold by a company - VA11
Quotation - Company Gives a Quotation for the products and Services to a Customer
Sales Order - Customer gives a Purchase order to the company agaionst which a Sales order will be raised to Customer in SAP.
VBAK: Sales Document(Header Data) (VBELN)
VBAP: Sales Document(Item Data) (VBELN,POSNR,MATNR,ARKTX,CHARG)
      Enquiry, Quotation, Sales Order are differentiated based on Doc.
      Type(VBTYP field) in VBAK,VBAP Tables( for Enquiry VBTYP = A,
      for Quotation 'B' & for Order it is 'C'.)
Delivery(Picking, Packing, Post Goods Issue and Shipment)->
Company sends the material after picking it from Godown and Packing it in a Handling Unit(box) and Issues the goods
LIKP: Delivery Table (Header Data)(VBELN,LFART,KUNNR,WADAT,INCO1)
LIPS: Delivery Table (Item Data)(VBELN,POSNR,WERKS,LGORT,MATNR,VGBEL)
      (LIPS-VGBEL = VBAK-VBELN, LIPS-VGPOS = VBAP-POSNR)
Billing - Also company bills to the customer for those deliveries
And in FI against this billing Accounting doc is created.
VBRK: Billing Table(Header Data)(VBELN,FKART,BELNR)
VBRP: Billing Table(Item Data)(VBELN,POSNR,FKIMG,NETWR,VGBEL,VGPOS)
      (VBRP-AUBEL = VBAK-VBELN, VBRP-VGBEL = LIKP-VBELN)
      Apart from these tables there are lot of other tables which starts with
      V, but we use the following tables frequently.
other tables and imp fields
VBUK: All Sales Documents status & Admn. Data(Header)(VBELN,VBTYP)
      VBTYP= C(Sales Order) VBTYP=J(Delivery) VBTYP=M(Invoice)
VBUP: Sales Documents status & Admn. Data(Item)(VBELN,POSNR)
VBEP: Sales Doc. Schedule Lines Data(VBELN,POSNR,EDATU,WMENG)
VBKD: To get sales related Business data like Payment terms etc.(VBELN,ZTERM)
VBFA: sales document flow data(VBELV,VBELN,POSNV,VBTYP)
VBPA: Partner functions Data(VBELN,PARVW,KUNNR,LIFNR)
VEDA: Contract Data(VBELN,VPOSN)
VEDAPO: Contract Data(VBELN,VPOSN)
KONA: Rebate Agreements (KNUMA,VKORG,VTWEG,SPART)
VBRL: SD Document: Invoice List(VBELN,POSNR,VBELN_VF,NETWR,KUNAG)
VKDFS: SD Index: Billing Indicator(FKTYP,VBELN,FKART,VKORG)
VBSK: Collective Processing for a Sales Document Header(SAMMG,SMART)
VBSS: Collective Processing: Sales Documents(SAMMG,VBELN,SORTF)
VRKPA: Sales Index: Bills by Partner Functions(VBELN,BELNR,KUNDE,PARVW)
VRPMA: SD Index: Billing Items per Material(MATNR,VBELN,BELNR,KUNNR)
TVLKT: Delivery Type: Texts(LFART,VTEXT)
KNA1: Customer Master-General(KUNNR,NAME1,LAND1)
KNB1: Customer Master(Company Code)(KUNNR,BUKRS,PERNR)
KNC1: Customer Master Data (Transaction Figures)(KUNNR,BUKRS,GJAHR)
KNVK: Customer Master Contact Partner(PARNR,KUNNR,NAME1)
KNVV: Customer Master sales data(KUNNR,VKORG,VTWEG,KDGRP)
KNBK: Customer Bank Details(KUNNR,BANKS,BANKL,BANKN)
KNVH: Customer Hierarchy (HITYP,KUNNR,VKORG,VTWEG,SPART)
KNVP: Customer Master Partner Functions(KUNNR,PARVW,KUNN2)
KNVS: Customer Shipment data(KUNNR,VSTEL,TRANS)
KNVI: Customer Tax data(KUNNR,ALAND,TATYP)
LFA1: Vendor Master-General (LIFNR,NAME1,ORT01)
LFB1: Vendor Master(Company Code)(LIFNR,BUKRS,PERNR)
LFC1: Vendor Master (Transaction Figures)(LIFNR,BUKRS,GJAHR)
MARA: Material Master-General (MATNR,MTART,MATKL)
MARC: Material Master-Plant data(MATNR,WERKS,EKGRP)
MARD: Material Master- St.Location Data(MATNR,WERKS,LGORT,LABST)
EBEW: Sales Order Stock Valuation(MATNR,VBELN,BWKEY,BWTAR)
TVKO: Sales Organizations(VKORG)
TVTW: Distribution Channel(VTWEG)
TSPA: Divisions(SPART)
TVKOV: Distribution Channels for S.Orgn(VKORG,VTWEG)
TVKOS: Divisions for S.Orgn(VKORG,SPART)
TVTA: Sales Areas(VKORG,VTWEG,SPART)
TVBUR: Sales Offices(VKBUR,ADRNR)
TVKBT: Sales Office Texts(VKBUR,SPRAS,BEZEI)
TVKBZ: Sales Office Assign.to Sales Area(VKORG,VTWEG,VKBUR)
TVKGR: Sales Group(VKGRP)
TVGRT: Sales Group Texts(VKGRP,SPRAS,BEZEI)
TVBVK: Sales Group to Sales office(VKBUR,VKGRP)
TVKWZ: Plants Assign.to S.Orgn(WERKS,VKORG)
T171T: Sales District Texts(BZIRK,BZTXT,SPRAS)
TVLA: Loading Points(LSTEL)
TVST: Shipping Points (VSTEL)
TVSWZ: Shipping Point to Plant(VSTEL,WERKS)
TVPT: Item Categories (PSTYV)
TINC: Customer Incoterms(INCO1)
T077D: Customer Account Group (KTOKD)
T001W: Plants (WERKS)
T001L: Storage Locations (LGORT)
T499S: Locations(WERKS,STAND,KTEXT)
TWLAD: To get address of Storage Location and Plant(LGORT,ADRNR)
TVAK: Sales Document (Order) Types (AUART)
TVAU: Sales Documents: Order Reasons (AUGRU)
TVFK: Billing Document Types (FKART)
TVLK: Delivery Types(LFART)
TVSB: Shipping Conditions (VSBED)
TTDS: Transportation Points(TPLST)
TVKT: Account Assignment Groups (KTGRD)
KONV: Condition Types pricing)(KNUMV,KSCHL,KWETR)
ADRC: To get Addresses of Partners(ADDRNUMBER,NAME1)
VBBE: Sales Requirements: Individual records(VBELN,POSNR,MATNR)
VBBS: Sales Requirement totals Record(MATNR,WERKS,LGORT,CHARG)
VBKA: Sales Activities Data(VBELN,KTAAR)
VBPV: Sales Document Product Proposal(VTWEG,MATNR,KUNNR,CHARG)
T682: Access Sequences (KOZGF)
T682T: Access Sequence Texts (KOZGF,VTXTM)
T683: Pricing Procedures (KALSM)
T683T: Pricing Procedures Texts(KALSM,KAPPL,SPRAS,VTEXT)
T685: Pricing Condition Types (KSCHL)
T685T: Condition Type Texts(KSCHL,SPRAS,KAPPL,VTEXT)
KONH: Conditions (Header)(KNUMH,KAPPL,KSCHL)
KONP: Conditions (Item)(KNUMH,KOPOS,KAPPL,KSCHL)
KONV: Conditions (Transaction Data)(KNUMV,KSCHL,KBERT,KWERT)
KOND: Conditions (KNUMD,ZUSKO,KSCHL)
for sd go through the links
http://www.sapgenie.com/abap/tables_sd.htm
Please check this SD online documents.
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/CAARCSD/CAARCSD.pdf
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/MYSAP/SR_SD.pdf
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCBMTWFMSD/BCBMTWFMSD.pdf
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/LOLISPLN/LOLISPLN.pdf
Also please check this SD links as well.
http://help.sap.com/saphelp_47x200/helpdata/en/92/df293581dc1f79e10000009b38f889/frameset.htm
http://help.sap.com/saphelp_erp2005/helpdata/en/dd/55f33e545a11d1a7020000e829fd11/frameset.htm
http://www.sap-basis-abap.com/sapsd.htm
http://www.sap-img.com/sap-sd.htm
http://www.sapgenie.com/abap/tables_sd.htm
http://searchsap.techtarget.com/featuredTopic/0,290042,sid21_gci961718,00.html
http://www.sapbrain.com/TUTORIALS/FUNCTIONAL/SD_tutorial.html
All help ebooks are in PDF format here
http://www.easymarketplace.de/online-pdfs.php
Reward points if useful
Regards
Anji

Help with main function

Can someone help me out with this? Im trying to create a main function out of this contructor.
public studentID()
int size; //hold returned values from box
int id;
int age;
size = Integer.parseInt(JOptionPane.showInputDialog (" Enter a nummber between 1 & 40")); //dialog box
recCount = 0;
idArray = new int[size];
ageArray = new int[size];
for(int i = 0; i <size; i++) //ask for values (size) times
id =
Integer.parseInt(JOptionPane.showInputDialog ("Enter an ID Number"));
age =
Integer.parseInt(JOptionPane.showInputDialog ("Enter an age"));
inputStudent(age, id); //calles method to put values in array
displayAll();
selectionSort(idArray, ageArray, size);
newNumberTable();
selectionSort(ageArray, idArray, size);
newAgeTable();
}

So what's the problem? Dump it all into the main method.
Actually I'd advise thinking carefully about whether it should really be in main(). Generally, IMHO, main should only bootstap an app. The real functionality should be in other methods that main() calls.

About CallByteMethodA Function

Hi you all:
I have some problem about CallByteMethodA function.
This is what my java code looks like:
public void setDS_INFO_mac(byte[] mac) {
for( int i = 0; i < mac.length; ++i ) {
this.ds_info.mac[i] = mac;
This is what my c code looks like:
jobject objref;
jclass cls = NULL;
jfieldID fid = NULL;
jmethodID mid = NULL;
jbyte dsMac[6];
jbyteArray returnArray = 0;
/* code not pertaining to this question snipped. */
mid = env->GetMethodID(cls, "setDS_INFO_mac", "([B)V" );
for( int j = 0; j < 6; ++j ) {
dsMac[j] = search_Info[i].ds_info.mac[j];
returnArray = env->NewByteArray(6);
if( returnArray != NULL ) {
env->SetByteArrayRegion(returnArray, 0, 6, (jbyte*)dsMac);
env->CallByteMethodA(objref, mid, (jvalue*)returnArray);
env->DeleteLocalRef(returnArray);
This is not working.
and, some about run time exception as follows:
Exception in thread "main" java.lang.NullPointerException
at CFGINFO.setDS_INFO_mac(DSCIStructure.java:97)
at DSCIJNInterface.dsc_EnumSearch(Native Method)
at MainApp.searching(MainApp.java:105)
at MainApp.main(MainApp.java:46)
Any idea what I'm doing wrong?

You are missing error checking code. Many calls to the JNI interface require that you check the method return value. Many calls also require that java exceptions must be checked for after the call.

Static variable error in main function

Dont know why it would be doing this. It is bascially telling me that every class I call in my main function needs to be static which is crazy.
import javax.swing.*;
import java.awt.*;
class Frame extends JFrame
     public Frame()
          setTitle("My Empty Frame");
          setSize(300,200);
          setLocation(10,200);
          this.show();
public class Main extends JFrame
     public JFrame frame;
     public Main()
          frame = new JFrame();
     public static void main(String[] args)
          System.out.println("CS348 Project 1");
          frame.setVisible(true); <--------------------ERROR
}Thanks for the help.

The problem (basically), is that you could do the following if you felt like it:
import javax.swing.*;
import java.awt.*;
class Frame extends JFrame
     public Frame()
          setTitle("My Empty Frame");
          setSize(300,200);
          setLocation(10,200);
          this.show();
public class Main extends JFrame
     public JFrame frame;
     public Main()
          frame = new JFrame();
     public static void main(String[] args)
          Main main1 = new Main();
          Main main2 = new Main();
          Main main3 = new Main();
          //what frame is this talking about??
          frame.setVisible(true); <--------------------ERROR
}What you would want instead is probably something like this:
Main main1 = new Main();
main1.getFrame().setVisible(true);This leads to a few other questions: why are you extending JFrame if you have a JFrame variable in the class? Does that class have a JFrame, or is it a JFrame? You should almost definitely go with the "have" answer.

Main function in c programming

I searched the net regarding my question. I continue to play with C off and on over the years, but now I aim to really work my way through the K&R book.
In the book one sees:
main()
hello world stuff stuff
This used to be no issue at all. It would compile and make a.out with no warning, nor complaint. Now I am working through the K&R book because I want to. I also have the first edition of Mark's Learn C on the Mac, but given how old it, and the second edition is, with regard to Xcode, I'll just stay with the terminal, BBEdit and K&R. By the way, I also saw numerous 1 star ratings on the Learn C book on amazon. Perhaps folks here could tell me how they feel about that book if they have used it and in particular the negative.
Now I get this warning, and I wonder why main has to have a type; what changed? Some new standard, the mac compiler. Now although I get the warning, default to int and all that, the compiler still creates a.out and it runs fine with the old ./a.out line command.
kr1.c:3:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
main()
^~~~
1 warning generated.

Why not just use a properly defined main function? This avoids having the compiler guess about about the intended return type and the number and types of the inputs. The C99 version of Standard C permits the two versions below:
int main(void) {...}
int main(int argc, char *arg[]) {...}
See http://en.wikipedia.org/wiki/Entry_point#C_and_C.2B.2B for more details, and OS specific main variants.
The last (2:nd) edition of K&R (http://en.wikipedia.org/wiki/The_C_Programming_Language) was released in 1988 preceding standard (ANSI) C and its C89, C95, C99 and C11 variants (http://en.wikipedia.org/wiki/ANSI_C) so K&R is at the very least somewhat out of date with modern C.

Possible forms of main function

i was always thinking that
public static void main(String[] args)would be the only correct form of the main function. but i noticed that
public static final void main(String[] args)worked too. i searched the internet and found even such things like:
public static final void main(String argument)
public static final void main()
private static final void main(String[] args)but in the java language specs there is nothing about these forms!
could somebody bring light in here???

You can name a method any way you like, for instance
public static int main(int argc, char[][] argv) {
public voir MAIN() {
public static final JFrame main(JComponent c) {
etc...
but the JVM will look for a method with the signature
public static void main(String[] args) {
when you execute 'java SomeClass'
the method can be final and you can change the name of the parameter, that's all.
Regards

Does ExtendScript have a concept of "main" function/method like when script is included as a library

I was just wondering whether ExtendScript has any concept like a main method, whereby if the current script is included by another script like a library import it will not execute this main function/method and only execute it when the script is run directly.
Similar to Java's main() method and Python's __main__.
If not, is there a workaround to mimic such behavior generically?

I cannot reproduce this. Can you create a very simple repro of this issue and post to OneDrive?
Jeff Sanders (MSFT)
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@WSDevSol
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Documentation about this function module

ineed Documentation about this function module RP_ANSAL_FROM_PERNR

Hi Avinash,
Have a look at the function group program documentation.It gives an idea of what the function module does.
Short text
Annual Salary Functionality (ANSAL)
Description
This function group contains different functionality for calculating the annual salary, and calculating a period salary from the annual salary.
The function group evaluates different tables and features:
Tables
T503      defines whether an employee is paid on an
          hourly basis or per period
T510W     defines the time unit
T511      determines the relevant module from the annual
          salary wage type, rounding, etc.
T539J     defines the valid wage types for calculating
          the annual salary
Features
ANSAL     defines the annual salary wage type
PFREQ     number of periods per year
Old U510F -> use T510F ?
Thanks
Lakshman

How to pass argument in main function ?

How to pass arguments in main function of one class from another class ?
I don't want to pass argument from command prompt.
I want to try something like this -
class Test{
public static void main(String args[]){
for(int i=0;i<args.length;i++)
     System.out.println(args);
class Fun{
public static void main(String args[]){
     Test t=new Test("Hello","good bye");
when i run Fun class it gives error.
Suggest me how can i do that.

In Fun class main method does not take arguments that is fine. In Test class instead of main method you can have constructor to take input parameters as suggested by BalusC
However, if you want to make your existing code work, you can call (though not appropriate) main() method of Test class from main() method of Fun class (As main() method is static object is not required to invoke this):
Test.main(new String[]{"Hello","good bye"});Here is your code:
class Test{
public static void main(String args[]){
for(int i=0;i<args.length;i++)
System.out.println(args);
public class Fun{
public static void main(String args[]){
//Test t=new Test("Hello","good bye");
Test.main(new String[]{"Hello","good bye"});
} Thanks,
Mrityunjoy

NEED INFORMATION ABOUT "MAX_TEST" FUNCTION MODULE

HI ABAPERS,
I need information about "MAX_TEST" function module . this function module is used in 4.6 version , now system have been shifted to 6.0.....here in 6.0 version this function module is not prasent.can any one tell me which new function module we can use in place of this function module, without changing the functionality........
Thanks in advance
regards,
SUNIL

The module is not very sophisticated. Profficiency in Java or ABAP will be a great bonus here. There are plenty of good materials regarding XI on SDN. I suggest to start with step-by-step guides and master all basic integration scenarios
http://wiki.sdn.sap.com/wiki/display/XI/Step-by-Step+Guides
Opportunities in industry are not bad also, cause PI is rather popular among customers. The best thing is that it fits any type of customer's business. Integration is demanded almost everywhere.

About ioctl function

what is the main function of the ioctl function?

Hi,
ioctl(2) is a general purpose system call used with character devices.
If you wanted to control some feature of your device driver, something perhaps not really suited to other entry points like read/write, you could do it by implementing an ioctl entry point.
ioctl works on a file descriptor, and takes a request and an argument.
For general character drivers you can choose the value of request yourself (as long as your app and driver agree!) and you can also pass some argument to your driver.
ioctls are used heavily by STREAMS (see streamio(7I)).
For STREAMS, some of the possible values of request are predefined and should be handled by STREAMS drivers and modules in the correct way (see the STREAMS programming guide).
Hope that helps,
Ralph
SUN DTS

Calling main function

Hello,
If I want to call the main function of other class, how should I give the parameters of the main function
public static void main(String args[]) how should I give args[] parameter.
Thank you

any use to u?
    public static void invokeMain(String className, String[] args) {
        try {
            Class.forName(className)
            .getMethod("main", new Class[] {String[].class})
            .invoke(null, new Object[] {args});
        } catch (Exception e) {
            InternalError error = new InternalError("Failed to invoke main method");
            error.initCause(e);
            throw error;
    }

Functionality of main function

Hello there:
what's the functionality of main function in a program?
This is a question asked in an interview. The answer on my mind is, main function is the entry for a program to start running.
Any more addtional and completed explainations?
Thanks,
sway

Any more addtional and completed explainations?The correct reply is to stand up, politely say that enought is enought, and then proudly leave the room without looking back. -:)

VS2013 Professional crashing on C++ main function

Visual Studio loads up just fine, i open the project, create a new source file, and start writing. I write the following with no error:
#include <iostream>
using namespace std;
Then, as i go on to write the main function as follows:
int main()
This is when it crashes, it will crash at any point in writing this function. When Windows (7) tells me that it has stopped working, the error information is as follows:
Problem signature:
Problem Event Name: CLR20r3
Problem Signature 01: devenv.exe
Problem Signature 02: 12.0.31101.0
Problem Signature 03: 54548724
Problem Signature 04: Microsoft.VisualStudio.Shell.12.0
Problem Signature 05: 12.0.31101.0
Problem Signature 06: 54545916
Problem Signature 07: a99
Problem Signature 08: 64
Problem Signature 09: System.InvalidOperationException
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 2057
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789
Ive tried reinstalling, safemode, administrator, resetting settings, 'repairing', deleting .suo files, nothing works. Same problem.
I really need this working, but ive run out of ideas. Ive been looking online for a month or so now, and nobody seems to have this problem. It works if I install on a virtual machine, but that is an incredible pain for me.
If somebody has any idea, it would be a great help. Thanks a lot.

Hi AlexOgden,
Thank you for posting in MSDN forum.
According to your description, as you said that when you write a C++ main function and then the
VS2013 Professional crashing.
And you said also that when you write a C++ main function in the VS2013 Professional on a virtual machine, it works fine.
So to check if this issue is related to the VS IDE environment or your machine environment, I suggest you could try to install a other version of the VS such as the VS2013 Ultimate on your machine and then check if you get the VS crashes issue.
(1) If you still get the crashes issue in a new VS, I doubt that this issue may be more related to your machine environment, so please try to repair or re-install the OS and then check this issue.
(2) If you did not get the crashes issue in the new VS, I assume that the issue maybe related to the VS2013 Professional setup file. So I suggest you could try to download this VS2013 Professional set up file from the Microsoft official and then install
it again check this issue.
https://www.visualstudio.com/en-us/downloads/download-visual-studio-vs.aspx
Best Regards,
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About main function

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