Java Development Tools

I am using Jdeveloper 11g update 2.
when i tried to run the application i am not getting the data from table.it is givinig the following error at run time:
Error while opening JDBC connection.
ORA-01005: null password given; logon denied
Unexpected exception caught: java.lang.NullPointerException, msg=null

In Edit Database Connection page,

i am giving password correctly.and selected the checkboxes Save Password and Deploy Password also.
and Test connection is giving Success also.

But why i am getting error at runtime.

could any got the same problemand find any solution.
please help me.


Sailaja