Start a java program from an FMB then read and write some variables

Hello,
I am trying to see whether the following setup works:
item A, B, D and Button Z are on a Forms Canvas.
User clicks on Button Z. This will launch a java program (Myprog class).
Myprog main will read values in item A and B, run some calculation and then will return it back to our forms module and then will be displayed in item D.
I have read about PL/SQL wrapper but the way I am looking at my setup is that my Forms module will be just the GUI interface.
Any ideas ?

main thing: a JAVA class that will take some inputs and will output some results and messages.
Prob: I do not want to use swing or any other GUI builder to make a nice GUI for my JAVA class.
What I want: I know how to use Forms. As such, I just want to put together a quick interface (mymodule.fmb) that when executed will allow the user to click on a button to start the java process and then see the results and error messages.
Why I don't want to go through SWING: my main prob is to get the java class executed ( which is fine right now thru command line) by other users thru a GUI interface. I do not have time to go thru SWING.
From the paper I mentioned, I think the PJC is the way to go. Can you please confirm ?
Thanks.

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Starting a java program from a button

Hi,
How can i start another java application (which is saparated from the orginal application) by pressing a button in the main application?
what should the action be?
tia,

TheOtherClass.main(theArgs);Though you might want to create a new thread for that call first.

Is there a way to start a JAVA program from the dock?

Hello,
I wrote some JAVA applications and I would like to put them in -
- and start them from - the dock.
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I can start them from Finder which tells me that there is some .jar starter utility.
;JOOP!

The Dock is for Applications, Documents, and Folders (which can take several forms). There are some other odd animals that can stay in the Dock, but they were never truly implemented (recent items is one). If you "wrap" the .jar file inside some package that behaves as an application, you can have it stay in the Dock just as any other Application.
A .jar file is not an application, it's a java archive. It is a collection of classes, metadata, etc. which the Java runtime interprets and executes. The Application which runs it shows up in the Dock as the coffee cup, but that is just the runtime engine, not the .jar.
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Calling one java program from another

Hello,
How can I start another java program from one? Lets
say I want Second.java to start by calling it from
First.java. How do I do it? The two programs are given
below. Any help is appreciated.
Thanks,
Amanda
First.java
import java.io.*;
import java.lang.reflect.*;
public class First
     public static void main(String[] args)
          Process theProcess=null;
          System.out.println("Hello World from First.java!");
          String second=new String("Second.java");
          //System.load(second);
          //Runtime.getRuntime().load(second);
          try
               theProcess=Runtime.getRuntime().exec( "Second.java"
               System.out.println("after exec");
          catch (IOException ioe)
               System.out.println(">>IOException thrown in
First.java while calling
Second.java."+ioe.getMessage());
Second.java
public class Second
     public static void main(String[] args)
          System.out.println("Hello World from Second.java!");
}

Thanks, warnerja
What if Second.java is on a remote machine i.e.
First.java and second.java are on different machines?
Will I have to use RMI?Well, you'd have to do some kind of remote invocation. Depends on what kinds of apps house the classes. There are all kinds of ways - web services, servlets, RMI, (maybe others...)
That's a totally different question than what you originally posted, and would have been very relevant to say so in the first place.

How to start an executable program from a java program ?

Hi,
does someone know how to start an executable program from a JAVA program ?
Thanks, Fred.

Take a look at the Runtime class.
-S-

Error while calling java program from ABAP

Hi Experts,
We are trying for RFC inbound scenario.
We followed the below blog
/people/gregor.wolf3/blog/2004/08/26/setup-and-test-sap-java-connector-outbound-connection
We are working with SAP JCO 3.0.2
We are getting the error : 'STFC_CONNECTION' could not be found in the server repository.
After I run the Java server program if I execute the RFC destination directly from SM 59 it is showing successful messages.
If I stop the java program then this RFC is failing. Based on this we concluded that RFC to Java connection is working fine.
But as mentioned in blog if we call the RFC Destination from ABAP program it is giving the below error,
'STFC_CONNECTION' could not be found in the server repository.
If we test the RFC destination using RFC_TRUSTED_CHECK standard FM we are getting the below error.
'RFCPING' could not be found in the server repository.
We create the RFC destination of Type : TCP/IP as exactly mention in the blog.
Please help us in resolving this issue.
Thanks
Prince

Pabi,
Using the RFC connection,we can establish a link between Java and SAP.
Afterwards,hope we can call Java program from ABAP.
Below is the sample piece of code to establish RFC connection(link) between Java and SAP.
DATA: REQUTEXT LIKE SY-LISEL,
      RESPTEXT LIKE SY-LISEL,
      ECHOTEXT LIKE SY-LISEL.
DATA: RFCDEST like rfcdes-rfcdest VALUE 'NONE'.
DATA: RFC_MESS(128).
REQUTEXT = 'HELLO WORLD'.
RFCDEST = 'JCOSERVER01'. "corresponds to the destination name defined in the SM59
CALL FUNCTION 'STFC_CONNECTION'
   DESTINATION RFCDEST
   EXPORTING
     REQUTEXT = REQUTEXT
   IMPORTING
     RESPTEXT = RESPTEXT
     ECHOTEXT = ECHOTEXT
   EXCEPTIONS
     SYSTEM_FAILURE        = 1 MESSAGE RFC_MESS
     COMMUNICATION_FAILURE = 2 MESSAGE RFC_MESS.
IF SY-SUBRC NE 0.
    WRITE: / 'Call STFC_CONNECTION         SY-SUBRC = ', SY-SUBRC.
    WRITE: / RFC_MESS.
ENDIF.
Regards,
Sree

Not able to execute one Java program from another one via. exec()

Hi,
I am new to this forum, so I might be asking a very trivial quetion.
My program Ap1 is :
class Ap1
public static void main(String a[]) throws Exception
Runtime rt=Runtime.getRuntime();
Process p=null;
p=rt.exec("javac,Pr.java");
Runtime.getRuntime().exec("javac,Pr.java");
When I run the above program, I get below error at the line 7(bold one):
D:\batchwe>javac Ap1.java
D:\batchwe>java Ap1
Exception in thread "main" java.io.IOException: CreateProcess: javac,Pr.java err
or=2
at java.lang.ProcessImpl.create(Native Method)
at java.lang.ProcessImpl.<init>(ProcessImpl.java:81)
at java.lang.ProcessImpl.start(ProcessImpl.java:30)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:451)
at java.lang.Runtime.exec(Runtime.java:591)
at java.lang.Runtime.exec(Runtime.java:429)
at java.lang.Runtime.exec(Runtime.java:326)
at Ap1.main(Ap1.java:7)
Path is set as below(which seems correct):
D:\batchwe>path
PATH=C:\Program Files\Java\jdk1.5.0_05\bin
I am just wondering how to call one Java program from another one?!
Please help.
thanks
Rashmi

Hi diptaPB,
Thanks for your suggestion.
Here is how I tried it again, but not getting the desired output:
Class Pr looks like below -->
class Pr
public static void main(String a[])
System.out.println("hi from process");
When I run 'Pr' from command prompt, i get the desired output:
D:\batchwe>java Pr
hi from process
However, when I call 'Pr' from another program Ap2.java, it seems that it does not call 'Pr':
class Ap2
public static void main(String a[]) throws Exception
Runtime rt=Runtime.getRuntime();
Process p=null;
String[] cmd=new String[2];
cmd[0]="javac";
cmd[1]="Pr.java";
p=rt.exec("cmd");
D:\batchwe>javac Ap2.java
D:\batchwe>java Ap2
************* no output appears here***********************
Looking forward for your help.
regards
Rashmi

Starting a java program on System boot/startup

Hi,
I am trying to find out how to start a java program on system startup which basically spawns a Thread which in turn does some processing.
Came across windows specific options which help one make it as a service.Making a .bat for windows and .sh for linux could be a option but not sure where to put these in respective OS or whether it is a good option.
If someone has tried out similar thing please let me know the details for the same.
Regards
Raj

[codes]
in command prompt
type edit startupor somename.bat
then type
cd C:\Program Files\Java\jdk1.5.0_01\bin
javac data1.java
java data1
and save
[codes]
copy startup.bat file
and click on start-->programs--> startup(rigthclick and open)
then paste that file into that folder...
now you ll get that file opened whenever system boots.
reply if this was usefull;)

Execute a java program from an another program

Like we can compile a code from wihin a java file by using the following :
Tool javac = ToolProvider.getSystemJavaCompiler();
Similarly,can we execute i.e. run a java program from within a java file i.e. running d java command from within the java file ??If yes then please tell me how??

suppose on the Unix box or from a Unix script ( korn, perl, bourne, bash) you can run the following java program
java ${JAVA_OPTS} -jar ${GMR_APPS_DIR}/risk.jar -I -c ${COB} -r ${BATCH} -o ${XML_DIR}
in java you can do the following :
Runtime rt = Runtime.getRuntime();
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// OR
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               process.waitFor();
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empty the output stream from the script
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               String s;
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               BufferedReader br = new BufferedReader(new InputStreamReader(is));
               while ((s = br.readLine()) != null) {
                    strBuff.append(s);
               return strBuff.toString();
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Regards,
Alan Mehio
London, UK
Edited by: alan_mehio on Jan 16, 2008 4:21 PM

Calling Java program from ABAP

Hi All,
my ABAP program downloads one file to one folder. Then one Java program is running to Encrypt the file.
Now , they want to call the JAVA program in ABAP, so that they can encrypt the file before downloading.
Is it possible to call a Java program from ABAP ? If Yes, please give me the detailed procedure.
Thanks
pabi

Pabi,
Using the RFC connection,we can establish a link between Java and SAP.
Afterwards,hope we can call Java program from ABAP.
Below is the sample piece of code to establish RFC connection(link) between Java and SAP.
DATA: REQUTEXT LIKE SY-LISEL,
      RESPTEXT LIKE SY-LISEL,
      ECHOTEXT LIKE SY-LISEL.
DATA: RFCDEST like rfcdes-rfcdest VALUE 'NONE'.
DATA: RFC_MESS(128).
REQUTEXT = 'HELLO WORLD'.
RFCDEST = 'JCOSERVER01'. "corresponds to the destination name defined in the SM59
CALL FUNCTION 'STFC_CONNECTION'
   DESTINATION RFCDEST
   EXPORTING
     REQUTEXT = REQUTEXT
   IMPORTING
     RESPTEXT = RESPTEXT
     ECHOTEXT = ECHOTEXT
   EXCEPTIONS
     SYSTEM_FAILURE        = 1 MESSAGE RFC_MESS
     COMMUNICATION_FAILURE = 2 MESSAGE RFC_MESS.
IF SY-SUBRC NE 0.
    WRITE: / 'Call STFC_CONNECTION         SY-SUBRC = ', SY-SUBRC.
    WRITE: / RFC_MESS.
ENDIF.
Regards,
Sree

How to run java program from website?

Hello
I'd like to know how to run java program from my web page.
I'd like to push some button in this web page so java program that would be on my server
would pop-up. Can it be done automaticaly upon running this web site? (without any buttons - I just enter website and program pops up).
Cheers

I rather thought about RMI. But I could try servlets. So how it would look like?.
I would make http request in browser (enter address) and program would show up in its window?. And I would not have to change anything in my program?. This program would run then on both boxes?. One remotely and one not?.
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Message was edited by:
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Thanks,
Gopal

is it not possible?
do i have to refresh the page and read in the values like...
<%
String ename = request.getParameter( "EmployeeName");
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%>and then call the class from here?
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Hello,
I have several java programs which run from the command prompt. I am seeking help with code for starting java programs from within a java program. For example, a program called master.java works something like this:
import java.*;
create connection pool
create variables and result sets
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start/run slave2.java (var3, var4, var5);
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cmdArray[1] = "slave1";
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Regarding this comment:
Why Runtime.exec? Either make the slaves Runnable or
just call their main() methods.
Oh, I see. Sepearate output. :PNone of the slave.java programs have any output.
Thanks again.

How to invoke a Java Program from Oracle 10g?(uRGENT)

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Start a java program from an FMB then read and write some variables

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