Prompt for Directory Selection when deploying in WEB

Question

I have created a Java code to prompt for directory selection and it works when alone. When I get the code with the JavaBean in the forms 6i application, no dialog prompt appears when clicking the "Get_directory" button. The Java code is listed below.
(A) File DDialog.java
package oracle.forms.intex;
import java.awt.*;
import javax.swing.*;
import java.beans.*;
import java.io.File;
public class DDialog extends Canvas {
private String directory_name ;
private PropertyChangeSupport pcs;
public DDialog() {
directory_name = "";
pcs = new PropertyChangeSupport(this);
public void set_directory_name() {
JFrame frame = new JFrame("Get Directory");
javax.swing.JFileChooser OpenDlg = new JFileChooser();
OpenDlg.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
int returnVal=OpenDlg.showOpenDialog(frame);
String old_directory_name = directory_name;
if(returnVal == JFileChooser.APPROVE_OPTION)
File selectedFile = OpenDlg.getSelectedFile();
if (selectedFile.isDirectory())
directory_name=selectedFile.getPath();
pcs.firePropertyChange("directory_name", old_directory_name, directory_name);
public void addPropertyChangeListener(PropertyChangeListener pcl) {
pcs.addPropertyChangeListener(pcl);
public void removePropertyChangeListener(PropertyChangeListener pcl) {
pcs.removePropertyChangeListener(pcl);
public static void main(String args[]) {
new DDialog();
(B) File DDialogPJC.java
package oracle.forms.intex;
import java.awt.*;
import java.awt.event.*;
import java.beans.*;
import oracle.forms.properties.ID;
import oracle.forms.handler.IHandler;
import oracle.forms.ui.CustomEvent;
import oracle.forms.ui.VBean;
public class DDialogPJC extends VBean implements PropertyChangeListener{
private Component mComp;
private IHandler mHandler;
private static final ID SHOWDIRECTORYDIALOG = ID.registerProperty("showdirectorydialog");
private static final ID DIRECTORYNAME = ID.registerProperty("directoryvalue");
private static final ID DIRECTORYCHANGEEVENT = ID.registerProperty("directorychangeevent");
public DDialogPJC() {
super();
try{
ClassLoader cl = getClass().getClassLoader();
Object obj = Beans.instantiate(cl,"oracle.forms.intex.DDialog");
mComp = (Component)obj;
mComp.setVisible(true);
mComp.setEnabled(true);
((oracle.forms.intex.DDialog)mComp).addPropertyChangeListener(this);
// add the component to this
add("Center",mComp);
catch(Exception e){
e.printStackTrace();
public void init(IHandler handler)
super.init(handler);
mHandler = handler;
public boolean setProperty(ID pid, Object value)
if(pid ==SHOWDIRECTORYDIALOG) {
((oracle.forms.intex.DDialog)mComp).set_directory_name();
return true;
else
return super.setProperty(pid,value);
public void propertyChange(PropertyChangeEvent pce) {
String new_directory_name=(String)pce.getNewValue();
try {
mHandler.setProperty(DIRECTORYNAME, new_directory_name);
catch(Exception e) {}
CustomEvent ce = new CustomEvent(mHandler, DIRECTORYCHANGEEVENT );
dispatchCustomEvent(ce);
(C) In the form, there is the button "GET_DIRECTORY" with code in WHEN_BUTTON_PRESSED trigger.
declare
DDialog_Bean Item;
begin
DDialog_Bean:=find_item('DDIALOG_BEAN');
if not id_null(DDialog_Bean) then
set_custom_item_property(DDialog_Bean,'showdirectorydialog',1);
end if;
end;
(D) In the same form, there is the javabean area "DDIALOG_BEAN" with code in WHEN_CUSTOM_ITEM_EVENT trigger.
declare
DDialog_Bean Item;
BeanValListHdl ParamList;
paramType Number;
EventName varchar2(20);
directory_name varchar2(255);
begin
DDialog_Bean:=find_item('DDIALOG_BEAN');
BeanValListHdl:=get_parameter_list(:system.custom_item_event_parameters);
EventName:=:system.custom_item_event;
if (EventName='directorychangeevent') then
get_parameter_attr(BeanValListHdl,'directoryvalue',ParamType,directory_name);
:directory_name:=directory_name;
end if;
end;
Please advise where the problem is and fix it, much thanks.
SK

Answer 1

Hello there SK. actually i have same problem with you. i am only new to Forms6i. Itried your code DDialog.java and the DDialogPJC.java
Ive got an error when i compile the DDialogPJC.java using the java complier.
here is the err:
package oracle.forms.properties does not exist
package oracle.forms.handler does not exist
package oracle.forms.ui does not exist
package oracle.forms.handler does not exist
how can i solve this problem. you said that it works properly in your machine.
please help me on this, i also want to try fixing your problem, but i need this to be fixed first. thank you and more power