How to store Unicode in Oracle database ?

I have a J2EE application and currently we are storing the Unicode data in amp;#xxx; format.
The browser can display this properly but the java swing application cannot. So I need to convert this to \uxxxx format.
Is it advisable to store the data in the d/b in the \uxxxx format or amp;#xxx; format ? Advantages ? Disadvantages ?
The database is setup for UTF-8.
Thanks

Not really sure what you are asking the conversion from whatever character set to Unicode should occur without thought to decimal or hex. What is the insert statement or method you are using to get the data ineserted into the database?

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