Dynamic Call Function/Class Method

Hi,
I have a requirement for which I need your help.
I want to Call a Method dynamically inside a program. how to do it?
My another quary is that how to call more than one class method dynamicaly in the program one at a time, based on certain conditions.
All the requirements mentioned above feels awakward to me, but are they feasible. Eagerly waiting for a reply.
Regards,
Pulokesh
Moderator message - Cross post locked
Edited by: Rob Burbank on Oct 26, 2009 9:48 AM

Hello,
you can call a Method like this where the name of the method is concatenated.
CONCATENATE 'SC_' me->gf_scenario '_SAVE' INTO lf_method.
CALL METHOD me->(lf_method).
Than I can imagine to loop over a tabele with all the Method Call to be executes un there:
Loop at gt_meth_calls into ls_meth_call.
ls_meth_call-object_instance->(ls_meth_call-meth_name).
endloop.
The table should be structured such that the first component contains a reference to the instance and the second component will be the Method name to run.

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Thank U for Ur time.
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Calling up class methods

I suffer problems understanding how to call up class methods from within my programs and would like to see further examples of coding and a lending hand with the problem below, program one ProductClass works out stock item lines of a product, the program then needs to ask for the StaticProduct Class(the second program attached) to check for a valid barcode length and for how many odds and even numbers are within it a valid barcode would be 5000127062092
I would very much appreciate some help:
* This is a program to Enter and check product codes and prices
* and give a summary of values at the end
* @author (Jeffrey Jones)
* @version (version 2 5th April 2003)
public class ProcessProduct
public static void main(String args[])
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//declare variables
String manuf;
String name;
int sLength;
String p;
String barcode;
int price;
int quantity;
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int totalQuantity=0;
int totalValue=0;
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while (!manuf.equals("0"))
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barcode = UserInput.readString();
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if (StaticProduct.isValidBarcode(barcode))
{barcode = new code();
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}//closing bracket of if
else
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}//closing bracket of if
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System.out.print("Enter Quantity : ");
quantity = UserInput.readInt();
if (quantity<=0)
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if (price<=0)
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//Output of correctly inputted data
System.out.println(manuf+":"+name+":"+barcode+":"+price);
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//update variables quantities
//update total quantity
totalQuantity = (totalQuantity + quantity);
//keep count of total value
totalValue = (totalValue + totalPrice);
//keep count of totqal no of transactions
transactions = (transactions++);
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manuf = UserInput.readString();
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* Write a description of class StaticProduct here.
* @author Jeffrey Jones
* @version 1 1st April 2003
public class StaticProduct
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* @return boolean
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System.out.println("Invalid barcode " + barcode + " not 13 characters");
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}//if
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sum1 += barcode.charAt(i) - '0';
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sum2 += barcode.charAt(i) - '0';
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if ( check != 0 ){
check = 10 - check;
}//endif
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System.out.println("Invalid barcode " + barcode + " check digit error");
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}//end isValidBarcode
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Read through your text book or some java tutorials from this site to understand what classes are, what are methods, etc.
Your program is full of wrong initializations (as you rightly said you dont understand how to call up class method I would add that you dont understand how to call classes and what do they return e.g.
You have declared
String p;
then you go ahead and do this
p = new Product("manuf","name","quantity","price"); This is syntax for calling a class is this class returning a String? :s
Please go through the basics of Object Oriented Programming and then start with the coding part else you will face such very many difficulties and waste more time of yours in just coding with no results.
Look for the tutorials on this site and read through them and do example as given in them.

Call enhancement class method from Bus. workflow task

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I think it might qualify for an OSS message.
There was simmilar note for BADIs which was corrected: https://service.sap.com/sap/support/notes/1156392
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Strange error of CALL FUNCTION within Method

Hi all,
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Here's an example: I've created a normal class with only one static method.
Class: ZCL_TEST
Method: CHECK_EMPLOYEE
Importing Parameter: IV_PERNR TYPE PERNR_D
Coding:
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Mark-André

Hi,
the dump even appears by testing the method from Class Builder with F8!
In my test report iv_pernr isn't declared as follows:
REPORT z_test.
PARAMETERS p_pernr TYPE pernr_d.
zcl_test=>check_employee( p_pernr ).
The reason of the dump is parameter RETURN. But i don't understand it why it only doesn't work from within a method.
Dump Message:
In the function module interface, you can specify only
fields of a specific type and length under "RETURN".
Although the currently specified field
"GT_RETURN" is the correct type, its length is incorrect.
Regards
Mark-André

Code to call friends class method

Hello,
Please can someone help me with friends class method call. in global classes
Thanks
Megh
Moderator message: please search for available information/documentation before asking.
Edited by: Thomas Zloch on Nov 2, 2010 5:29 PM

What is your exact problem?
The class whose private and protected section you want to use, needs declaration of its friends. You do it in Friends tabstrip. All these classes are allowed then to access these "hiden" sections from outside of the class. Below example how it works with local classes. For global ones the principle stays the same
CLASS lcl_main DEFINITION DEFERRED.
CLASS lcl_other DEFINITION FRIENDS lcl_main. "only LCL_MAIN can use may hiden sections
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PRIVATE SECTION.
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ENDCLASS.
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ENDMETHOD.                    "prot_meth
METHOD priv_meth.
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ENDCLASS.
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PUBLIC SECTION.
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PRIVATE SECTION.
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ENDCLASS.
CLASS lcl_main IMPLEMENTATION.
METHOD call_friends_methods.
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ENDMETHOD.
ENDCLASS.
START-OF-SELECTION.
DATA gr_main TYPE REF TO lcl_main.
CREATE OBJECT gr_main.
gr_main->call_friends_methods( ).
Regards
Marcin

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I want to fetch ITS related information (SITSPMON Tcode) in my JAVA application. But i didnt find much BAPIs for the same. While debugging I came accross few class methods with help of which I can get the required information. So is there any way we can call and execute methods of ABAP classes through java application?
for e.g. I want to call GET_VERSION method of CL_ITSP_UTIL class.
Thanks,
Arati.

Hi,
Yes, as per my knowledge the only way to interact is using BAPI exposed as RFCs. So try to invoke those class methods in one CUSTOM BAPI and expose that BAPI as RFC and consume that RFC to get those details.
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How to call inner class method in one java file from another java file?

hello guyz, i m tryin to access an inner class method defined in one class from another class... i m posting the code too wit error. plz help me out.
// test1.java
public class test1
     public test1()
          test t = new test();
     public class test
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          public int geti()
               int i=10;
               return i;
// test2.java
class test2
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i m getting error as
test2.java:7: cannot resolve symbol
symbol : variable t
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^

There are various ways to define and use nested classes. Here is a common pattern. The inner class is private but implements an interface visible to the client. The enclosing class provides a factory method to create instances of the inner class.
interface I {
    void method();
class Outer {
    private String name;
    public Outer(String name) {
        this.name = name;
    public I createInner() {
        return new Inner();
    private class Inner implements I {
        public void method() {
            System.out.format("Enclosing object's name is %s%n", name);
public class Demo {
    public static void main(String[] args) {
        Outer outer = new Outer("Otto");
        I junior = outer.createInner();
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Unable to call Java class method within Embedding Java Activity in BPEL

Hi ,
I have written Java Class named 'Class3' .
When I am creating and trying to call these classes whithin Embedding Java Activity , compile time error is coming. Compiler is not finding class . Error message is like this one.
uildfile: C:\Oracle\Middleware\jdeveloper\bin\ant-sca-compile.xml
scac:
[scac] Validating composite : 'C:\JDeveloper\mywork\Application7\Embedded15\composite.xml'
[scac] C:\JDeveloper\mywork\Application7\Embedded15\SCA-INF\bpel\BPELEmbedded15\src\orabpel\bpelembedded15\ExecLetBxExe0.java:73: cannot find symbol
[scac] symbol : class Class3
[scac] location: class orabpel.bpelembedded15.ExecLetBxExe0
[scac] C:\JDeveloper\mywork\Application7\Embedded15\SCA-INF\bpel\BPELEmbedded15\src\orabpel\bpelembedded15\ExecLetBxExe0.java:73: cannot find symbol
[scac] symbol : class Class3
[scac] location: class orabpel.bpelembedded15.ExecLetBxExe0
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[scac] Note: Recompile with -Xlint:unchecked for details.
[scac] FATAL_ERROR: location {ns:composite/ns:component[@name='BPELEmbedded15']}(20,36): Failed to compile bpel generated classes.
[scac] failure to compile the generated BPEL classes for BPEL process "BPELEmbedded15" of composite "default/Embedded15!1.0"
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[scac]
BUILD FAILED
C:\Oracle\Middleware\jdeveloper\bin\ant-sca-compile.xml:264: Java returned: 1 Check log file : C:\JDeveloper\mywork\Application7\Embedded15\SCA-INF\classes\scac.log for errors
Total time: 8 seconds
I am creating Class3 directly in Application Resources folder indide Project Folder in Jdeveloper without creating any package. Code of the class is .......
public class Class3 {
public Class3() {
super();
public String getValue(){
return "BBBBBBB";
Can any one help?
Regards
Yogendra Rishishwar
9867927087

Hi ,
In your java project frm jdev..right click and choose general and then choose deployment profiles and then choose Jar ..and then give some appropriate name(abc) and then click ok.
Then under resources file u get a abc.deploy file right click and say deploy to jar ..u will find the jar in that director.Now include this jar in your prjct libraries.
have a look at the link http://niallcblogs.blogspot.com/search/label/embedded%20Java

Calling sub class method from superclass constructure

hi all
i have seen a program in which a super class constructure class methods of sub class before initialization of fields in subclass ,i want how this is posibble ?
thanks in advance

Hear is the code n other thing i have used final variable without initialization n compiler dosen't report error
abstract class Test
public Test()
System.out.println("In DemoClass Constructer");
this.show();
public void show()
System.out.println("In DemoClass Show() method");
class Sub1 extends Test
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public Sub1(float n)
this.number=n;
System.out.println((new StringBuilder()).append("Number is==").append(number).toString());
int j;
public void show()
System.out.println("In Sub1 Class Show method ");
public class DemoClass
public static void main(String s[])
Sub1 obj1=new Sub1(5);
Sub1 obj2=new Sub1(6);
thanks for reply

Can you call a class method as an RFC function

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I would like to know whether it is possible to instantiate a class in another system via RFC and then call a method eg. cl_abap_typedescr=>describe_by_name, of that class in the other system like you can with an RFC enabled function.
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Its not possible to call a method like RFC.
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Regards
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Calling a class method from another class

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How to call a class method from a jsp page?

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public class Class1 {
public String getResult() {
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Thanks

Here is a sample:
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<H5>Service nanme:</H5><INPUT TYPE="text" name="service" value="XE" />
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<H5>Please enter password</H5><INPUT TYPE="password" name="password" />
<INPUT TYPE="submit" />
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<% } else { %>
<%
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String portNumber = request.getParameter("port");
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String user = request.getParameter("user");
String password = request.getParameter("password");
String url = "jdbc:oracle:thin:" + user + "/" + password + "@//" + hostName + ":" + portNumber + "/" + service;
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OracleDataSource ods = new OracleDataSource();
ods.setURL(url);
Connection conn = ods.getConnection();
// Create Oracle DatabaseMetaData object
DatabaseMetaData meta = conn.getMetaData();
// gets driver information
out.println("<TABLE>");
out.println("<TR><TD>");
out.println("<B>JDBC Driver version</B>");
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out.println("</TD>");
out.println("</TR>");
out.println("<TR><TD>");
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out.println(meta.getDriverName());
out.println("</TD>");
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out.println("<TR><TD>");
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How to Call a Class method in another class.

Hi All,
I have created two class
The class JavaAgent create a object of another TestFrame1 class . I am trying to call
out.setSize(200,100);
out.setVisible( true );
above two method.
I am a doing some thing wrong. I am getting the error " symbol cannot be resolved".
public class JavaAgent extends AgentBase {
private TestFrame1 out;
private Session session;
private Database db;
private Frame frame;
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Database db = agentContext.getCurrentDatabase();
String title = db.getTitle();
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out.setSize(200,100);
out.setVisible( true );
Thread.sleep(250);
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import lotus.domino.*;
import java.awt.*;
import javax.swing.*;
class TestFrame1
private Session session;
private Database db;
TestFrame1( )// Constructor
JFrame frame = new JFrame("Test Frame 1");
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Hi,
I guess you are not able to invoke setSize and setVisible method. Am i right ??
First make sure your TestFrame class is compiled.
The setSize() and SetVisible are defined in Component and inherited by JFrame.
In order to use these methods you have to make your TestFrame as subclass of JFrame or provide a utility method
and from there explicitly call these methods by using the associated JFrame reference.
And in your JavaAgent class why you declared TestFrame1 twice?? it's really hard to predict your intention.
Anyway i hope this code will helps you bit...
import javax.swing.JFrame;
public class JavaAgent{
     JavaAgent()
      * @param args
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          test.setSize(250,250);
          test.setVisible(true);
class TestFrame1 extends JFrame
     TestFrame1(String title)
          super(title);

Dynamic Call Function/Class Method

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