Compiling Java program from other java program

Hi,
How can I compile and capture the compilation result from another java program?
Thanks

As if I had seen somewhere a hint about being able to
programatically compile with the help of the class
sun/tools/javac/Main found in the tools.jar.I saw that article, too, but when I took a look at the JDK's source code, it became apparent that none of the classes in tools.jar are supported. Your program could break with any new version of the JDK.
If you're still interested, here's the URL:
http://java.sun.com/developer/JDCTechTips/2003/tt0722.html

Similar Messages

Starting Java application from other Java application..

Hi all,
I was wondering if it is possible to start a Java program from an other Java program.
In Java program 1, I have this code to execute the other application:
try {
Process p = Runtime.getRuntime().exec("cmd /c java -cp JavaApp2.jar com.test.TestFrame");
} catch (IOException e) {
}I tried this code, but unfortunately I couldn't opened the other (JavaApp2.jar) Java Application. Is there a way to open the other application anyways?
I really hope someone can help me. Help would be greatly appreciated! Thanks in advance.
Tongue78.

What if there is no JAR file?Then you can make it out of the .class files. And to anticipate your next question, if there are no .class files there is no application at all, so you can't exec() it or call the main() method directly. Your point?
And JAR isn't part of the Java language.It is a major part of the Java platform.
This means you can only get access to a JAR file via the OS. Wrong again. CLASSPATH. URLClassLoader.
In short you cannot just shout main() in a Java program and hope some other Java program will hear you and start.Absolute rubbish. If the required classes are on the CLASSPATH you just call com.company2.app2.main(args) and off you go. Or you can load the main class and invoke its main() reflectively.
No source code required, or 'source code merge' either.

How to compile and run a .java file from another java program

hello,
can any one tell me how to compile and run a *.java* file from another java program which is not in same directory?

Well a smarter way of implementing this is by using a solution provided by Java Itself.
If you are using J2SE 6.0+ there is an in built solution provided along with JDK itself and inorder to go ahead with solution the below are set of API which you;d be using it for compiling Java Programs (Files)
http://java.sun.com/javase/6/docs/api/javax/tools/package-summary.html
How do i do that ??
Check out the below articles which would help you of how to do that
http://www.ibm.com/developerworks/java/library/j-jcomp/index.html
http://www.javabeat.net/javabeat/java6/articles/java_6_0_compiler_api_1.php
http://books.google.com/books?id=WVbpv8SQpkEC&pg=PA155&lpg=PA155&dq=%22javax+tools%22+compiling+java+file&source=web&ots=XOt0siYe-f&sig=HH27ovuwvJgklIf8omTykUmy-eM
Now once we are done with compilation.In order to run a Specific class all you ought to do is create an object and its specific methods of a specified class included in the CLASSPATH which you can manage it easily by usage little bit reflections.
Hope that might help :)
REGARDS,
RaHuL

How to start java.exe from a java program in windows ?

Hi,
I did like to know, if its possible to run java.exe from a java program on windows ? The java.exe should be visible from checking the processes that are currently running using the Task Manager on windows.

Runtime.getRuntime().exec("java Sample");

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-

Calling a Java Subpackage from a C program.... fails

I am having alittle bit of trouble calling a java subpackage from my C program. I can call a package ok but not a subpackage.
My directory path is c:\com\phoenix_systems_inc
My CLASSPATH=.;c:\com;
In the c:\com\phoenix_systems_inc directory is my FundsgClient.class
The fundsgClient.java has a package declaration of
package com.phoenix_systems_inc;
within the fundsgClient.java is class:
     public synchronized static String setValue (String str) {
     String a = "You passed: " + str;
     return a;
======================================
in my C program I have
options[0].optionString = "-Djava.class.path=c:\\com\\";
cls = env->FindClass("/phoenix_systems_inc/com.phoenix_systems_inc.FundsgClient");
I think that I am over declaring the path in FindClass.

nope;; that is what I had initially;
My CLASSPATH is CLASSPATH=.;c:\com;
==================================C program code
memset (&vm_args, 0, sizeof(vm_args));
vm_args.version=JNI_VERSION_1_2;
vm_args.options = options;
vm_args.nOptions = 1;
options[0].optionString = "-Djava.class.path=c:\\com";
vm_args.ignoreUnrecognized = TRUE;
res = JNI_CreateJavaVM(&jvm,(void**)&env,&vm_args);
if (res < 0)
fprintf(stderr, "Can't create Java VM\n");
     return 0;
cls = env->FindClass("com/phoenix_systems_inc/FundsgClient");
===== is the java class code ==========
package com.phoenix_systems_inc;
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;
import gnu.cajo.invoke.Remote;
import gnu.cajo.utils.extra.Xfile;
* Fundsg RMI Client
* @author agesite
* @version 1.0
public class FundsgClient {
static {
PropertyConfigurator.configure("FundsLog.properties");
// Log4j logger
     private static Logger log = Logger.getLogger("PhoenixClient");
// Get RMI Server Hostname
private static final String host = PhoenixClientProperties.getInstance().
getProperty("PhoenixRMIServer");
private static String port = "1198";
     * request
     * @param requestStr Request String
     * @return String Response String
     * @throws Exception
     public synchronized static String request (String requestStr) throws Exception {
          // Serialized object
          RequestObject requestObj = new RequestObject();
          requestObj.setRequest(requestStr);
          if (log.isDebugEnabled()) {
               log.debug("Client Request: " + requestStr);
          System.out.println("//" + host + ":" + port + "/fundsgServer");
          Object object = Remote.getItem("//" + host + ":" + port + "/fundsgServer");
          String response = (String) Remote.invoke(object, "nativeFundsg", requestObj.getRequest());
          if (log.isDebugEnabled()) {
               log.debug("Server Response: " + response);
          return response;
     * xferFile
     * @param sourceFile
     * @param destFile
     * @throws Exception
     public synchronized static void xferFile (String sourceFile, String destFile) throws Exception {
          try {
               Object xf = Remote.getItem("//" + host + ":" + port + "/xfileFunds");
               // remoteInvoke = true means transfer can be performed from
// server to client and vice versa
Xfile.remoteInvoke = true;
               Xfile.fetch(xf, sourceFile, destFile);
          } catch (Exception e) {
               if (log.isDebugEnabled()) {
                    log.debug("Xfile.fetch exception: " + e);
     public synchronized static String setValue (String str) {
     String a = "You passed: " + str;
     return a;
}

Trying to compile a .java file from another .java file

Hello,
I'm trying to compile a .java file from another .java file using Runtime.exec...
String c[]=new String[3];
c[0]="cmd.exe"; c[1]="/c" ; c[2]="javac Hello.java";
Process p=Runtime.exec(c);
If anyone can help me in atleast getting the command prompt when Runtime.exec("cmd.exe") is executed...that would be great...I tried out notepad.exe, calc, explorer instead of cmd.exe...all the commands display their respective windows..except cmd.exe...the command prompt doesnt appear...
Please help me ASAP....
Thanks for your help in advance...
Regards.
AKhila.

try this. ur code will be compliled and will get .class file. but console won't appear. is it a must for u?
public class Exec{
     public static void main(String a[]) throws Exception{
          String c[]=new String[3];
          c[0]="cmd.exe"; c[1]="/c" ; c[2]="javac Hello.java";
          Process p=Runtime.getRuntime().exec(c);
          // or Runtime.getRuntime().exec("javac Hello.java");

Hollow stars.... itunes assigns an album average based on my star ratings, but in what scenario do Songs get assigned a hollow star? does itunes acquire info from other media programs or solely from what ive rated in itunes, orrr....

Hollow stars.... itunes assigns an album average based on my star ratings, but in what scenario do Songs get assigned a hollow star? does itunes acquire info from other media programs or solely from what ive rated in itunes, or does itunes use other peoples ratings... Hollow Star assignment basis?

If you assign songs a rating an unrated album gets an automatic rating, which you can override by rating it.
If you assign an album a rating unrated songs get an automatic rating, which you can override by rating them.
iTunes doesn't import ratings from tags, or third party services. You set them.
You can't turn automatic ratings off.
tt2

How to call a Java class from another java class ??

Hi ..... can somebody plz tell me
How to call a Java Class from another Java Class assuming both in the same Package??
I want to call the entire Java Class (not any specific method only........I want all the functionalities of that class)
Please provide me some slotuions!!
Waiting for some fast replies!!
Regards
Smita Mohanty

Hi Smita,
you just need to create an object of that class,thats it. Then you will be able to execute each and every method.
e.g.
you have developed A.java and B.java, both are in same package.
in implementaion of B.java
class B
            A obj = new A();
             //to access A's methods
             A.method();
            // to access A's variable
            //either
           A.variable= value.
           //or
           A.setvariable() or A.getvariable()

Program to list all include programs from the Sap program list

My requirement is to display all include programs from the Sap program Table ( D010INC table and TADIR table), From
here i have to get all include programs.Can anyone give the program code for this requirement

well, it's your requirement and not ours, so why not try yourself first?

How can i run Java class form other java application.

Hi ,
I have problem to run java class from my java application,
I am using the class ClassLoader in order to launched the Java class , it�s work fine whenever, the class exist in the same folder , however , when i am trying to run class that is not in the current folder ,
i got error (see below),
Do you have any idea what is wrong?
java.lang.ClassNotFoundException
     at SimpleClassLoader.loadClass(SimpleClassLoader.java:110)
     at SimpleClassLoader.loadClass(SimpleClassLoader.java:53)
     at Run.main(Run.java:31)

What does "run an class" mean? You don't run classes. They're not executables.
I bet your problem is the classpath. You are aware that the classloader looks only there? Unless it's an UrlClassLoader.

FM to pass one variant to another called program from a calling program

Hi Gurus,
Please let me know the name of the function module to pass one variant to another called program from a calling program without displaying the selection screen of the called program.

you can use fm rs_variant_fetch to retrieve the variant info.
Check the abap help on the statement submit to get info on how to call a program with variables, or a variant
Kind regards, Rob Dielemans

Calling another program from the current program

Hi all,
In our requirement we are calling another program from our current program .
In the current program( from which we are calling ) we are giving file name in the selection screen
and when we run the current program we are successfully going to other program but our main requirement is to higlight the file name which we had given earlier .
Note : The called program doesnt have any selection screen.

HI
use EXPORT and IMPORT key words for passing data from one program to another program.
as the called program is available in the same session you can use above key words which means you are accessing ABAP MEMORY.
You can also use SET and GET key words which means SAP memory
take F1 help there are examples tooo and detailes explanation abou the same
Regards
Ramchander Rao.K
Edited by: Ramchander Krishnamraju on Dec 24, 2008 7:05 AM

Spawning child program from parent concurrent program.

Hi All,
I am trying to spawn multiple child programs from Parent concurrent program, Parent concurrent program is having execution method as HOST.
Here is how I designed it.
1. Parent Concurrent program (Parent Conc program with execution method as HOST).
2. Host file is abc.prog calls PLSQL package xyz.main.
3. xyz.main has logic to launch multiple child programs - (Child Conc program with execution method as PLSQL stored proc) using fnd_request.submit_request utility.
All the child programs are getting launched but are in INACTIVE/NOMANAGER state. Could you please let me know how to overcome this issue.
Both Parent and child programs are added to standard concurrent manager. This issue is only coming when parent program as execution method as HOST if parent program execution method is PLSQL stored procedure then child programs are running fine..
I also tired initializing apps in HOST file (abc.prog) before calling PLSQL package xyz.main.
Thanks.
Sham.

hi,
even i was facing the same issue. while submitting the child requests through fnd_request.submit_request i tried the following:
FND_REQUEST.submit_request (
application => 'Application Short Name',
program => 'Program Executable Name',
description => 'Program Description',
start_time => NULL,
sub_request => FALSE,
argument1 => 'Input 1',
argument2 => 'Input 2' );
After this the Programs were submitted successfully.

How to compile a java source from a java program

Hi .
I would like to know how to compile my java source from inside an execution of a java program.
Is there another way than rather use :
Runtime.getRuntime().exec("javac myFile"); ?

you can and cann't use the source code of javac... or maybe use jikes...

Compiling Java program from other java program

Similar Messages

Maybe you are looking for