How to call java classed in forms 10g

Hi
I am using forms 10g
There is a java class email_class (to send emails and attachments). this java class (email_class) has further used two moere .jar files (activation.jar & mail.jar).
Now I want to use this java class (email_class) in my form to send email and attachment.
Could you please help me how can I do that?
regards

The jar file must be included in CLASSPATH which is set in the Forms default.env (or your own custom env if you created one). If you have not jar'd the class files, then the path to the class files should be included in CLASSPATH. Here is a simple example. Your CLASSPATH will contain many more entries.
CLASSPATH=D:\oracle10g\iDS1012\j2ee\OC4J_BI_Forms\applications\formsapp\formsweb\WEB-INF\lib\frmsrv.jar;D:\oracle10g\iDS1012\jlib\share.jar;D:\oracle10g\iDS1012\jlib\utj.jar;D:\oracle10g\iDS1012\jlib\zrclient.jar;D:\oracle10g\iDS1012\forms\java\frmall.jar;D:\oracle10g\iDS1012\jlib\importer.jar;D:\oracle10g\iDS1012\forms\javaNotice that jar files are included in the path and the last entry is just a directory. In this case, if there are any class files which are not in a jar, they could be stored individually in the \java directory.
Verify that you have at least the following included in your CLASSPATH:
frmsrv.jar
importer.jar
share.jar
utj.jar
zrclient.jar
Do not remove other entries which may exist as they are needed, but ensure that the list includes the above.

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First Read https://forums.oracle.com/forums/ann.jspa?annID=432
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3. http://qamarsyed.blogspot.com/2010/07/calling-java-from-plsql-inside-oracle.html
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Oracle Developer Team wrote:
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How to call java classed in forms 10g

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