"Import Java Classes"in Oracle6i Forms

Hello
I have two questions regarding importing java classes in Forms 6i
1- How we can add my own class to this list, so that I can import it directly in form 6i and use it?
2- When these classes are used in form development, are they fully imported to client side or only class wrapper is ported to forms. I m asking this question, cuz I want to develop my application with all bussiness logic(Java classes) in middle tier ie Form Server.
Can anyone guide me in this regard
Thanks in advance
Asif

OK answers to the questions are:
1) If your class is on the classpath it will be picked up by the Java importer but you have to restart Forms if you add the class to the path
2) THe java importer is for middle tier. In Forms, all ofthe application logic is on the middle tier and if you want it integrate this with Java the importer will create a PLSQL wrapper to call the Java - in pretty much the same way as ORA_FFI. (So NOT imported into the client)
There are some white papers on OTN.
Regards
Grant

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Error while importing java class into oracle forms 10g

Hi
I have generated a web service client using jdeveloper 10g. It consists of complex type methods. I am trying to import the class files using java importer in oracle form 10g. I am able import all of them successfully except one. That one is the main method. Please see the error and suggest me how to overcome this error.
Exception occurred: java.lang.NoClassDefFoundError: oracle/jdeveloper/webservices/runtime/WrappedDocLiteralStub
Thanks in advance

Do you see oracle/jdeveloper listed in "Import Java Classes" when you try to import?
If not, make sure you add C:\DevSuiteHome_1\jdev\lib\jdev.jar to FORMS_BUILDER_CLASSPATH in registry
Also excetion indicates: oracle/jdeveloper/webservices/runtime/WrappedDocLiteralStub
If you typing it - type: oracle.jdeveloper.webservices.runtime.WrappedDocLiteralStub

Importing Java Classes for Bussiness Logic in Forms6i

I have created a Java Class with some bussiness logic in it and i m able to impotr it in Forms 6i BUT when it converts my java method into program unit it automatically changes the name of the method with some code ..like method name is "increment" it will make it as "increment_3137" and also one parameter of Ora_java.object type will be added ....WHY is THAT ???and how to work for hat ...even when i m executing the method with the parameter it gives some Exception that Non-Oracle Exception ...and my class individually runs perfectly fine ...CAN U HELP ME ASAP ...Please as its urgent
Thanx..

Once you have imported java class files on forms throgh java import class option..
it creates a pl/sql for the java class that you have imported.
names for the procedures are assigned by machine code, so dont worry about it..
for eg. if the name of a method in java class is Increment and after loading java class file the name of ur pl/sql is increment_1254.
when u call increment_1254 and pass parameter to the procedure ur class incerement will be called and desired operation will be performed.
ora_java.object is the objec that will be used to access the the class file.
as java is object oriented it requires a object to execute method of class.
so u have to initialize the object..
e.g. increment_1234 (ora_java.object,a,b) is ur procedure
to call this procedure do the following
declare
PASS ORA_JAVA.JOBJECT;
a,b integer;
begin
pass := <classname>.new; --new will be created if ur class is public or u got public constructor in ur class.
increment_1234 (pass,a,b) ; -- increment_1234 (ora_java.object,a,b) ;
end;

"importing java classes" through forms9i

hi
i can't import any java class which i have written
they are not visible on the "java classes list"
when i try to import it manually typing, it gives "java.lang.ClassNotFoundException".
what can i do?

Hi,
I am having the same problem.
I can't import java class in the form.
I read through most of the forum and this is what I tried.
I follow the instruction and follow the sample form from OTN.
Ok, this is what I did and tell me what I did wrong.
1. I copy my co-worker jar files into c:\project.
In it there are a bunch of jar files he uses jdk.1.4
(i am not sure if this might cause the problem).
2. on the CLASSPATH in CONTROL PANEL -- System icon,
i have following:
c:\project\security.jar;c:\program files\java\jre1.4.0_01\bin;C:\oracle\orads9i\jlib\bigraphbean.jar;C:\oracle\orads9i\jlib\LW_PfjBean.jar;C:\oracle\orads9i\jlib\bigraphbean-nls.zip
BTW, my form version is 9.0.2.11.0, in windows environment.
thank you soo much for your help.
3. then I launched the forms, and tried to import java classes, it took about 2 minutes to pop up the window and it gives me an error:
PDE-PER001 Internal error (depjv1).
4. then I closed it and tried to import java classes again, and this second time didn't give me any error, but it gives me a blank selection.
Can anyone tell me what I did wrong? please?
and also can anyone tell me what's the different between the CLASSPATH in control panel and in regedit, under ORACLE, i also have a classpath set.
This is what I have set under regedit.
c:\program files\java\j2re1.4.0_01;c:\security.jar;C:\oracle\orads9i\jlib\bigraphbean.jar;C:\oracle\orads9i\jlib\LW_PfjBean.jar;C:\oracle\orads9i\jlib\bigraphbean-nls.zip
Is this key supposed to be under my oracle registry?

How to run the imported java class in form

Help!!!!!
Pls help me to run the imported java class in forms.
Package is created in forms while imported one class called
singlexml.class and that package has one procedure and one
function.
I just wanted to run that class.I mean the new package.
Thanks
Anil

Hi,
It is because the converter works on byte code and it only supports a subset of the Java language (see the JC specifications). It is kind of like compiling you code on Java 6 and trying to run it on Java 5. The JCDK outlines the required compiler version.
Cheers,
Shane

Importing java class in form 10g

hi
I have successfully imported a java class in my form but when i am trying to import java.lang.float, it is throwing me the following error:
Importing Class java.lang.float...
Exception occurred: java.lang.ClassNotFoundException: java.lang.float
Could anybody let me know what jar file i am missing and in what path should i add the jar file.
Thanks in advance,

Hello,
float is not an object. Try : java.lang.Float
Francois

Cannot import Java classes to form

I am using Forms Forms [32 Bit] Version 10.1.2.0.2 (Production).
I want to use the Persian Calendar from this web-site http://persiancalendar.sourceforge.net/.
I download the stuff and there are 2 JAR files.
I did this:
-- Put the JAR files in my E:\Ora_Dev_10g_R2\forms\java directory
-- Made an entry of these 2 in the E:\Ora_Dev_10g_R2\forms\server\formsweb.cfg file
Now, when I open a form and got IMPORT JAVA CLASSES, I Can't see the classes.
The directory structure of the 2 JAR files (after expanding is like this):
persiancalendar.jar
-> E:\Ora_Dev_10g_R2\forms\java\persiancalendar\com\ghasemkiani\util
-> under util there is the sub-dir icu
icu4j_3_2_calendar.jar
-> E:\Ora_Dev_10g_R2\forms\java\icu4j_3_2_calendar\com\ibm\icu
-> under icu there are these sub-directories impl, lang, math, text, util
The E:\Ora_Dev_10g_R2\forms\java is in my CLASSPATH:
C:\>echo %CLASSPATH%
.;e:\Ora_Dev_10g_R2;*e:\Ora_Dev_10g_R2\forms\java*;D:\Program Files\QuickTime\QTSy
stem\QTJava.zip;

Scott,
I agree with Abdetu, you should create your own thread for your question. However, to set an environment variable in UNIX you declare the variable and then export it. For example, in your default profile you could add the following:
FORMS_BUILDER_CLASSPATH='Your Path Here'
export FORMS_BUILDER_CLASSPATHCraig...
Edited by: CraigB on Feb 4, 2011 11:24 AM

Importing java class from forms 6i

Dear people
I want to import very simple java class from forms 6i, i went to programs then i choose import java classes, then it gives me error message PDE-UJ1001 failed to create the jvm.
please tell me how to solve the problem.
Yasser

+... not a Java question. Post moved from the New To Java to the Forms forum.+

Importing Java classes in Forms 6i

Hi
When I try to import java classes using the option available in forms 6i,I get the following error
PDE-UJI001 Failed to create the JVM.
ne clue?
Thanks
Gangs

You have installer the JDK 1.2 (This software located in a Sun Microsystems Web Site), and you have a configure the your PATH:
PATH=%PATH%;< path your JDK installed >;
If you have Designer 6i installed in your machine, then your Enviromento Variable PATH = PATH=< path your JDK installed >;%PATH%;
After configure the PATH, you have a create another Enviroment Variable CLASSPATH with:
Example:
CLASSPATH=C:\oracle\designer\TOOLS\COMMON60\JAVA\IMPORTER.JAR;c:\jdk1.2.2;
Test your Forms 6i.

Importing Java class problem!

Hello
I have problem by Importing java class into form. When I select in Forms Builder from menu: Programs/Import Java Classes it returns error: PDE-UJI001 JVM not able to create!
Can someone know what I must do to fix that problem?
Thanks, Chrity

It is a shame because it, probably, contains no special 1.5 new instruction at all.
Maybe it would be possible to try replacing the current JDK/JRE of your <ORACLE_HOME>/jdk installation after a safe backup of course.
You probably have a very little chance that it works, and it also won't be supported.
Francois

Import Java Classes impossible?!

Hello all!
I tried in Forms 6i to use the option "import Java Class". But i always get the error-message PDE-UJI001, which I didn't find in any documentation. This error occurred on two different systems, in Win2000 and Win98.
null

Hi Martin!
I had the same problem like you. What you have to do is the following.
One solution is to read the metalink, search for the exception and import java classes.
The second solution is:
setting the classpath to the importer.jar file and to your directory where the classes you want to import are.
And you have to set the path to jre\classic and jre\bin.
For more questions, feel free to ask

Import Java Classes

Hello,
Is anybody knows where i can find documentation about the Import Java Classes functions in Forms9i.
What they are, how to implement them, etc. ?

Hi,
did you check teh online help for the Java Importer?
also:
http://otn.oracle.com/products/forms/pdf/forms_in_java_world.pdf
http://otn.oracle.com/products/forms/pdf/javaimporter.pdf
Frank

PDE-UJ1001, while trying to import java classes.

Hi,
When I try to import java classes into forms using the java
importer, I get an error stating PDE-UJ1001-Failed to create
JVM. I tried installing a patch in Developer 2000(Path 4a). But
still it doesnt work. Could anybody guide me in this?
Thanks,
Karthick.

am getting similar error - my dba has suggested that oracle developer uses the jvm from ie4 but i'm sure that cant be true as i thought the jvm was built in.
could somebody out there clarify this or inform me whats missing..
error
from dev 6i forms builder (6.0.8.11.3) on 8i (8.1.7.2.0) when trying to select option 'import java classes' from program menu returns error 'PDE-UJ1001 Failed to create the JVM.'
regards and thanks in anticipation....
vin ferguson

Problem When Import Java Class -compilation error

Hi all
I made a java class that has methods to return Screen width and Height .
package tarek;
import java.awt.Dimension;
import java.awt.Toolkit;
public class Screen
Dimension dim ;
public Screen()
dim = Toolkit.getDefaultToolkit().getScreenSize();
public double getWidth()
double w = dim.getWidth();
return w;
public double getHeight()
double h=dim.getHeight();
return h;
I made the jar file " screen.jar" and make it ready to use in form builder
I opened form builder and make import java class (From program>import java class>choose the class anc click import)
The class now imported successfully and the PL/SQL package body is:
PACKAGE Screen /* tarek.Screen */ IS
-- DO NOT EDIT THIS FILE - it is machine generated!
-- Constructor for signature ()V
FUNCTION new RETURN ORA_JAVA.JOBJECT;
-- Method: getHeight ()D
FUNCTION getHeight(
obj ORA_JAVA.JOBJECT) RETURN NUMBER;
-- Method: getWidth ()D
FUNCTION getWidth(
obj ORA_JAVA.JOBJECT) RETURN NUMBER;
END;
Now I made a button on the form and i WRITE THIS CODE TO INVOKE THE CLASS on when_button_pressed
DECLARE
vScreen_Class ORA_JAVA.JOBJECT;
BEGIN
vScreen_Class := SCREEN.NEW;
END;
My problem is I have compilation error
error 306 AT LINE 5 , COLUMN 25
wrong number or types of argument in call to "NEW"
I do not know what is the reason of this compilation error?
Is it because the method in java return "double datatype" while in oracle return "number datatype"
Please help
Edited by: [email protected] on Dec 28, 2009 10:24 AM

Sarah, I ca not move my thread to JDeveloper because it is not java issue. The problem is with my PL/SQL code and the way I make Import Java class to forms Builder. The Java code is OK.
Andreas Thank you so much for replying. In fact I made a full compile "Ctrl+Alt+K". but still error
The following is the package Body
PACKAGE BODY Screen IS
-- DO NOT EDIT THIS FILE - it is machine generated!
args JNI.ARGLIST;
-- Constructor for signature ()V
FUNCTION new RETURN ORA_JAVA.JOBJECT IS
BEGIN
args := NULL;
RETURN (JNI.NEW_OBJECT('tarek/Screen', '()V', args));
END;
-- Method: getHeight ()D
FUNCTION getHeight(
obj ORA_JAVA.JOBJECT) RETURN NUMBER IS
BEGIN
args := NULL;
RETURN JNI.CALL_DOUBLE_METHOD(FALSE, obj, 'tarek/Screen', 'getHeight', '()D', args);
END;
-- Method: getWidth ()D
FUNCTION getWidth(
obj ORA_JAVA.JOBJECT) RETURN NUMBER IS
BEGIN
args := NULL;
RETURN JNI.CALL_DOUBLE_METHOD(FALSE, obj, 'tarek/Screen', 'getWidth', '()D', args);
END;
BEGIN
NULL;
END;
---------------------------------------------------------------------------------

Forms6i - Import Java Classes

Hi,i need import java classes to Forms.When I choose in menu
Program/Import Java classes, program shows error: PDE-UJI001
Failed to create the JVM. I tried set classpath,paths but
nothing. Thank you for any tip:-)

Download and install the JDK 1.2.2.
2. Assuming the JDK 1.2.2 is installed in c:\jdk1.2.2 directory
and the JRE in
C:\PROGRA~1\JAVASOFT\JRE\1.2 directory; ORACLE_HOME=C:\Dev6iR2.
Set the PATH to
set PATH=%PATH%;c:\jdk1.2.2\bin;C:\PROGRA~1\JAVASOFT\JRE\1.2
\bin;C:\PROGRA~1\JAVASOFT\JRE\1.2\bin\classic
( If you are using ias9i then the JDK 1.2.2 comes with the ias
installtion ,
in this case please set the PATH to
D:\ias9i\Apache\jdk\bin;D:\ias9i\Apache\jdk\jre\bin;D:\ias9i\Apac
he\jdk\jre\bin\classic;%PATH% )
3. Set the CLASSPATH to set CLASSPATH=%CLASSPATH%;C:\Dev6iR2
\TOOLS\COMMON60\JAVA\IMPORTER.JAR;.
(If you do not set the CLASSPATH correctly you will get the error
PDE-UJI002 Unable to find the required java importer classes)
4. Now run the Forms Builder by using the command.
C:\Dev6iR2\bin\ifbld60.exe
Now the Java Importer Should Run fine

"Import Java Classes"in Oracle6i Forms

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