Hi ,info need on container creation,methods,class,interface....
hi ppl,
Can anybody give me information on what is and how to create
container creation,methods,class,interface....with programs.
>
priyank dev wrote:
> hi ppl,
> Can anybody give me information on what is and how to create
> container creation,methods,class,interface....with programs.
Hi Dev,
Interface is just the skeleton of the class definition.
If you want to have your own code for all or any of the methods that interface is havings then you can create an instance of that interface and implement those methods with you own code.
That is the advantage of object oriented programming. And if you want to use the standard method or original method's functionality then you have call the method along with the class which implemented it like below
class => method1
For Imore information on interfaces Check this link.
http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b6254f411d194a60000e8353423/frameset.htm
For creating classes you can follow this procedure.
Go with abap dictionary->select database table->provide the table for dev classs eg. V_TDEVC-> go for display option-> select utilities->select contents option-> select create dev class,
provide the name and short text,software component->create req.no.
with this dev class will be created.
Thanks
Nitesh
Edited by: Nitesh Kumar on Nov 18, 2008 10:56 AM
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Hi..
Please go thru the following code.
class Parent {
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class Child extends Parent {
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TIA..
Basu.Since you seem to have an aversion to using the child class decide whether to call just the parent's set function, I think I would do it like this:
class Parent{
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System.out.println("In Parent Constructor\n");
void set(ConditionClass C) {
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class Child extends Parent {
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^
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// Create a scanner
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while (inputNotValid)
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* Returns true if the method is used for the specified
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return (MethodFunctionality) this.methodDetails.get(methodSignature);
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public boolean fulfills(int requirementId) {
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Meghnahi meghna,
interfaces in ABAP Objects play the same role as classes. Just like classes, interfaces are object types that reside in the namespace of all types. While a class describes all aspects of a class, an interface only describes a partial aspect
The syntax for declaring a local interface is:
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DATA ...
CLASS-DATA ...
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i dont want to confuse you .
please go to the below link to know more about... interface and classes.
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Need to create a driver class for a program i have made...
hey guys im new to these forums and someone told me that i could get help on here if i get in a bind...my problem is that i need help creating a driver class for a program that i have created and i dont know what to do. i need to know how to do this is because my professor told us after i was 2/3 done my project that we need at least 2 class files for our project, so i need at least 2 class files for it to run... my program is as follows:
p.s might be kinda messy, might need to put it into a text editor
Cipher.java
This program encodes and decodes text strings using a cipher that
can be specified by the user.
import java.io.*;
public class Cipher
public static void printID()
// output program ID
System.out.println ("*********************");
System.out.println ("* Cipher *");
System.out.println ("* *");
System.out.println ("* *");
System.out.println ("* *");
System.out.println ("* CS 181-03 *");
System.out.println ("*********************");
public static void printMenu()
// output menu
System.out.println("\n\n****************************" +
"\n* 1. Set cipher code. *" +
"\n* 2. Encode text. *" +
"\n* 3. Decode coded text. *" +
"\n* 4. Exit the program *" +
"\n****************************");
public static String getText(BufferedReader input, String prompt)
throws IOException
// prompt the user and get their response
System.out.print(prompt);
return input.readLine();
public static int getInteger(BufferedReader input, String prompt)
throws IOException
// prompt and get response from user
String text = getText(input, prompt);
// convert it to an integer
return (new Integer(text).intValue());
public static String encode(String original, int offset)
// declare constants
final int ALPHABET_SIZE = 26; // used to wrap around A-Z
String encoded = ""; // base for string to return
char letter; // letter being processed
// convert message to upper case
original = original.toUpperCase();
// process each character of the message
for (int index = 0; index < original.length(); index++)
// get the letter and determine whether or not to
// add the cipher value
letter = original.charAt(index);
if (letter >='A' && letter <= 'Z')
// is A-Z, so add offset
// determine whether result will be out of A-Z range
if ((letter + offset) > 'Z') // need to wrap around to 'A'
letter = (char)(letter - ALPHABET_SIZE + offset);
else
if ((letter + offset) < 'A') // need to wrap around to 'Z'
letter = (char)(letter + ALPHABET_SIZE + offset);
else
letter = (char) (letter + offset);
// build encoded message string
encoded = encoded + letter;
return encoded;
public static String decode(String original, int offset)
// declare constants
final int ALPHABET_SIZE = 26; // used to wrap around A-Z
String decoded = ""; // base for string to return
char letter; // letter being processed
// make original message upper case
original = original.toUpperCase();
// process each letter of message
for (int index = 0; index < original.length(); index++)
// get letter and determine whether to subtract cipher value
letter = original.charAt(index);
if (letter >= 'A' && letter <= 'Z')
// is A-Z, so subtract cipher value
// determine whether result will be out of A-Z range
if ((letter - offset) < 'A') // wrap around to 'Z'
letter = (char)(letter + ALPHABET_SIZE - offset);
else
if ((letter - offset) > 'Z') // wrap around to 'A'
letter = (char)(letter - ALPHABET_SIZE - offset);
else
letter = (char) (letter - offset);
// build decoded message
decoded = decoded + letter;
return decoded;
// main controls flow throughout the program, presenting a
// menu of options the user.
public static void main (String[] args) throws IOException
// declare constants
final String PROMPT_CHOICE = "Enter your choice: ";
final String PROMPT_VALID = "\nYou must enter a number between 1" +
" and 4 to indicate your selection.\n";
final String PROMPT_CIPHER = "\nEnter the offset value for a caesar " +
"cipher: ";
final String PROMPT_ENCODE = "\nEnter the text to encode: ";
final String PROMPT_DECODE = "\nEnter the text to decode: ";
final String SET_STR = "1"; // selection of 1 at main menu
final String ENCODE_STR = "2"; // selection of 2 at main menu
final String DECODE_STR = "3"; // selection of 3 at main menu
final String EXIT_STR = "4"; // selection of 4 at main menu
final int SET = 1; // menu choice 1
final int ENCODE = 2; // menu choice 2
final int DECODE =3; // menu choice 4
final int EXIT = 4; // menu choice 3
final int ALPHABET_SIZE = 26; // number of elements in alphabet
// declare variables
boolean finished = false; // whether or not to exit program
String text; // input string read from keyboard
int choice; // menu choice selected
int offset = 0; // caesar cipher offset
// declare and instantiate input objects
InputStreamReader reader = new InputStreamReader(System.in);
BufferedReader input = new BufferedReader(reader);
// Display program identification
printID();
// until the user selects the exit option, display the menu
// and respond to the choice
do
// Display menu of options
printMenu();
// Prompt user for an option and read input
text = getText(input, PROMPT_CHOICE);
// While selection is not valid, prompt for correct info
while (!text.equals(SET_STR) && !text.equals(ENCODE_STR) &&
!text.equals(EXIT_STR) && !text.equals(DECODE_STR))
text = getText(input, PROMPT_VALID + PROMPT_CHOICE);
// convert choice to an integer
choice = new Integer(text).intValue();
// respond to the choice selected
switch(choice)
case SET:
// get the cipher value from the user and constrain to
// -25..0..25
offset = getInteger(input, PROMPT_CIPHER);
offset %= ALPHABET_SIZE;
break;
case ENCODE:
// get message to encode from user, and encode it using
// the current cipher value
text = getText(input, PROMPT_ENCODE);
text = encode(text, offset);
System.out.println("Encoded text is: " + text);
break;
case DECODE:
// get message to decode from user, and decode it using
// the current cipher value
text = getText(input, PROMPT_DECODE);
text = decode(text, offset);
System.out.println("Decoded text is: " + text);
break;
case EXIT:
// set exit flag to true
finished = true ;
break;
} // end of switch on choice
} while (!finished); // end of outer do loop
// Thank user
System.out.println("Thank you for using Cipher for all your" +
" code breaking and code making needs.");
}My source in code format...sorry guys :)
Cipher.java
This program encodes and decodes text strings using a cipher that
can be specified by the user.
import java.io.*;
public class Cipher
public static void printID()
// output program ID
System.out.println ("*********************");
System.out.println ("* Cipher *");
System.out.println ("* *");
System.out.println ("* *");
System.out.println ("* *");
System.out.println ("* CS 181-03 *");
System.out.println ("*********************");
public static void printMenu()
// output menu
System.out.println("\n\n****************************" +
"\n* 1. Set cipher code. *" +
"\n* 2. Encode text. *" +
"\n* 3. Decode coded text. *" +
"\n* 4. Exit the program *" +
"\n****************************");
public static String getText(BufferedReader input, String prompt)
throws IOException
// prompt the user and get their response
System.out.print(prompt);
return input.readLine();
public static int getInteger(BufferedReader input, String prompt)
throws IOException
// prompt and get response from user
String text = getText(input, prompt);
// convert it to an integer
return (new Integer(text).intValue());
public static String encode(String original, int offset)
// declare constants
final int ALPHABET_SIZE = 26; // used to wrap around A-Z
String encoded = ""; // base for string to return
char letter; // letter being processed
// convert message to upper case
original = original.toUpperCase();
// process each character of the message
for (int index = 0; index < original.length(); index++)
// get the letter and determine whether or not to
// add the cipher value
letter = original.charAt(index);
if (letter >='A' && letter <= 'Z')
// is A-Z, so add offset
// determine whether result will be out of A-Z range
if ((letter + offset) > 'Z') // need to wrap around to 'A'
letter = (char)(letter - ALPHABET_SIZE + offset);
else
if ((letter + offset) < 'A') // need to wrap around to 'Z'
letter = (char)(letter + ALPHABET_SIZE + offset);
else
letter = (char) (letter + offset);
// build encoded message string
encoded = encoded + letter;
return encoded;
public static String decode(String original, int offset)
// declare constants
final int ALPHABET_SIZE = 26; // used to wrap around A-Z
String decoded = ""; // base for string to return
char letter; // letter being processed
// make original message upper case
original = original.toUpperCase();
// process each letter of message
for (int index = 0; index < original.length(); index++)
// get letter and determine whether to subtract cipher value
letter = original.charAt(index);
if (letter >= 'A' && letter <= 'Z')
// is A-Z, so subtract cipher value
// determine whether result will be out of A-Z range
if ((letter - offset) < 'A') // wrap around to 'Z'
letter = (char)(letter + ALPHABET_SIZE - offset);
else
if ((letter - offset) > 'Z') // wrap around to 'A'
letter = (char)(letter - ALPHABET_SIZE - offset);
else
letter = (char) (letter - offset);
// build decoded message
decoded = decoded + letter;
return decoded;
// main controls flow throughout the program, presenting a
// menu of options the user.
public static void main (String[] args) throws IOException
// declare constants
final String PROMPT_CHOICE = "Enter your choice: ";
final String PROMPT_VALID = "\nYou must enter a number between 1" +
" and 4 to indicate your selection.\n";
final String PROMPT_CIPHER = "\nEnter the offset value for a caesar " +
"cipher: ";
final String PROMPT_ENCODE = "\nEnter the text to encode: ";
final String PROMPT_DECODE = "\nEnter the text to decode: ";
final String SET_STR = "1"; // selection of 1 at main menu
final String ENCODE_STR = "2"; // selection of 2 at main menu
final String DECODE_STR = "3"; // selection of 3 at main menu
final String EXIT_STR = "4"; // selection of 4 at main menu
final int SET = 1; // menu choice 1
final int ENCODE = 2; // menu choice 2
final int DECODE =3; // menu choice 4
final int EXIT = 4; // menu choice 3
final int ALPHABET_SIZE = 26; // number of elements in alphabet
// declare variables
boolean finished = false; // whether or not to exit program
String text; // input string read from keyboard
int choice; // menu choice selected
int offset = 0; // caesar cipher offset
// declare and instantiate input objects
InputStreamReader reader = new InputStreamReader(System.in);
BufferedReader input = new BufferedReader(reader);
// Display program identification
printID();
// until the user selects the exit option, display the menu
// and respond to the choice
do
// Display menu of options
printMenu();
// Prompt user for an option and read input
text = getText(input, PROMPT_CHOICE);
// While selection is not valid, prompt for correct info
while (!text.equals(SET_STR) && !text.equals(ENCODE_STR) &&
!text.equals(EXIT_STR) && !text.equals(DECODE_STR))
text = getText(input, PROMPT_VALID + PROMPT_CHOICE);
// convert choice to an integer
choice = new Integer(text).intValue();
// respond to the choice selected
switch(choice)
case SET:
// get the cipher value from the user and constrain to
// -25..0..25
offset = getInteger(input, PROMPT_CIPHER);
offset %= ALPHABET_SIZE;
break;
case ENCODE:
// get message to encode from user, and encode it using
// the current cipher value
text = getText(input, PROMPT_ENCODE);
text = encode(text, offset);
System.out.println("Encoded text is: " + text);
break;
case DECODE:
// get message to decode from user, and decode it using
// the current cipher value
text = getText(input, PROMPT_DECODE);
text = decode(text, offset);
System.out.println("Decoded text is: " + text);
break;
case EXIT:
// set exit flag to true
finished = true ;
break;
} // end of switch on choice
} while (!finished); // end of outer do loop
// Thank user
System.out.println("Thank you for using Cipher for all your" +
" code breaking and code making needs.");
} -
How to see which methods/classes are important?
Hi Everyone,
I am a beginner writing one of my first applications and I have a very newby question. How do I organize and manage many methods (and classes) to see which are the important ones and which are not?
The questions arised for me because I noticed that I am a bit reluctant to introduce new helper private methods in a class, because I fear there would be too many methods and I couldn’t handle/oversee them... I know it’s probably very wrong and stupid. That’s why I would really like to put it right in me.
So for example I create a class with a few public methods that are of course the most important part of the class. Those public methods need some more private methods that still do something important and maybe complex thing. But then I stilll need more methods to make clear code in the previous methods. Finally I end up with 20-30 methods in a supposed to be simple class. If I just look into it in Eclipse I have to scroll up and down a lot and even in the package explorer I can’t tell the importants methods apart from the rest. Is this normal?* (Please confirm it is; it would bring relief to me :))
I thought some kind of method hierarchy shown in the package explorer and expressed in the indentation of the code would help. It would be based on the call hierarchy, but I realize that may be ambiguous. Still, do you know if there is any tool, plugin, solution for this?
I mean something like this:
SomeClass:
..-veryImportantMethod
....-importantMethod
....-imprtantMehtod2
........-method
........-method2
........-method3
............-reallyNotImportanMethod
The same thing goes for classes. I start with a few important ones and introduce many less important later. I guess I can’t organize them into different packages based on importance because packages are not for that. It’s just looks strange for me to see a small unimportant helper class opened in the tab next to my main delagator class. (I'm not sure I know correclty what delegator means but that's not important at the moment :))
I am really just a beginner (needless to say probably :)) but I think it would be easier to intellectually manage the code if there would be some importance hierarchy. It doesn’t even have to be unambiguous as it would only be a way to display the code by the IDE; it wouldn’t affect the program in any way.
If you have any comments about why this whole thing is not important “because when you write your code..... “ or why I am totally lost and wrong here; I would really appreciate that as well :)
Thanks in advance,
lemonbostonlemonboston wrote:
Hi Everyone,
I am a beginner writing one of my first applications and I have a very newby question. How do I organize and manage many methods (and classes) to see which are the important ones and which are not?
The questions arised for me because I noticed that I am a bit reluctant to introduce new helper private methods in a class, because I fear there would be too many methods and I couldn’t handle/oversee them... I know it’s probably very wrong and stupid. That’s why I would really like to put it right in me.
So for example I create a class with a few public methods that are of course the most important part of the class. Those public methods need some more private methods that still do something important and maybe complex thing. But then I stilll need more methods to make clear code in the previous methods. Finally I end up with 20-30 methods in a supposed to be simple class. If I just look into it in Eclipse I have to scroll up and down a lot and even in the package explorer I can’t tell the importants methods apart from the rest. Is this normal?* (Please confirm it is; it would bring relief to me :))
I thought some kind of method hierarchy shown in the package explorer and expressed in the indentation of the code would help. It would be based on the call hierarchy, but I realize that may be ambiguous. Still, do you know if there is any tool, plugin, solution for this?
I mean something like this:
SomeClass:
..-veryImportantMethod
....-importantMethod
....-imprtantMehtod2
........-method
........-method2
........-method3
............-reallyNotImportanMethod
The same thing goes for classes. I start with a few important ones and introduce many less important later. I guess I can’t organize them into different packages based on importance because packages are not for that. It’s just looks strange for me to see a small unimportant helper class opened in the tab next to my main delagator class. (I'm not sure I know correclty what delegator means but that's not important at the moment :))
I am really just a beginner (needless to say probably :)) but I think it would be easier to intellectually manage the code if there would be some importance hierarchy. It doesn’t even have to be unambiguous as it would only be a way to display the code by the IDE; it wouldn’t affect the program in any way.
If you have any comments about why this whole thing is not important “because when you write your code..... “ or why I am totally lost and wrong here; I would really appreciate that as well :)
Thanks in advance,
lemonbostonI think you would benefit from this http://en.wikipedia.org/wiki/Domain-driven_design -
Hi all,
can anyone help me regarding this problem of mine.
Can you give some notes/documents regarding workflow.
I need to create a program in work flow, i need a standard program of a method/class that is usually used in creating a notification in workflow.
thanks a lot.
regards,
JCHi,
Please check the link,
WorkFlow and SAP Scripts
Regards,
Hema.
Reward points if it is useful. -
WebDynpro Method from a Class Interface?
Is possible to call a webdynpro method from a class interface that is register in the WDDOINIT of the same WEBDYNPRO component?
I register my custom webdynpro screen into FPM_OIF_COMPONENT, now when I execute a FPM action my WebDynpro receives the action but ofcourse WDDOINIT doesn't get triggered again. I need to call my webdynpro code in the class interface so I can update my custom screen.
SAP does that in their standard screen, Can I do that?
Jason PVAs Matt pointed out, your questions indicate that you should start from the basics, then as your knowledge enlarges, go and familarize with more advanced concepts of ABAP Objects. Once you feel a bit comfortable with that, go for BADIs and read a bit about that too.
In my opinion the best start is to read some book, which covers most of ABAP OO concepts. Personally I would recommend [ABAP Objects: ABAP Programming in SAP NetWeaver|http://www.sap-press.com/product.cfm?account=&product=H1934] as I like this author and had his previous book. This would give you strong foundations of what is going on here. Eventually you will often want to refresh some concepts so you have everything you need in one spot (book).
Of course if want to save some money, simply look for articles/blogs/wikis in SDN or search in Google. There are plenty of these.
For start I suggest these series of videoblogs [Basic ABAP OO eLearnings|http://www.sdn.sap.com/irj/scn/weblogs;jsessionid=(J2EE3414800)ID1160600550DB10016261778120999663End?blog=/pub/wlg/15408]
This will give you rough idea how the OO design should be done.
Regards
Marcin
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