Forms :: Bean Not Found When Form Is Loaded

when i run my form im immediately im geting geting this error message

oracle.forms.webutil.file.FileFunctions bean not found.CLIENT_TEXT_IO.fopen will not work

when i searched in meta link i found a solution but not know ing how to implement it..

Symptoms When running a customized Webutil Form an error similar with the following is displayed:

oracle.forms.webutil.file.FileFunctions bean not found. CLIENT_TEXT_IO.fopen will not work.

The exact function that "will not work" may change in the error message depending on the WebUtil code used. There are no errors displayed in the Java Console. The original WebUtil Demo Form runs successfully. Cause The WebUtil code that is failing is placed in triggers that are firing before Forms instantiates the WebUtil PJCs.

This is not allowed when using WebUtil and it is explained in the WebUtil User Guide release 1.0.6, section 5.3: "Once the WebUtil library has been attached to your form you can start to add calls to the various PL/SQL APIs defined by the utility. However, there is an important restriction in the use of WebUtil functions: WebUtil can only start to communicate with the client once the Form has instantiated the WebUtil PJCs. This means that you cannot call WebUtil functions before the Forms user interface is rendered.

This would include triggers such as PRE-FORM, WHEN-NEW-FORM-INSTANCE and WHEN-NEW-BLOCK-INSTANCE for the first block in the Form." SolutionDo not use Webutil code in triggers like PRE-FORM, WHEN-NEW-FORM-INSTANCE and WHEN-NEW-BLOCK-INSTANCE because these triggers are firing before Forms instantiates the WebUtil PJCs Instead, you can test the WebUtil functionality with a WHEN-BUTTON-PRESSED trigger and you can use it in your application in other allowed locations.