Clob/blob in java-code stored in database

Hi!
I want to write some java-code (CREATE OR REPLACE AND RESOLVE JAVA SOURCE NAMED...)
where I want to return an image as blob.
For doing that I have to initialize the blob in the java-code -correct?
I see many examples like
oracle.sql.BLOB.createTemporary(conn, false,oracle.sql.BLOB.DURATION_CALL)
In PL/SQL there is some similar:
dbms_lob.createtemporary(lob_loc => xmlclob, cache => TRUE, dur => dbms_lob.SESSION);
If I have to initialize the blob in the java source, how to do that (using empty_blob, but why using oracle...createTemporary then?)?
I don't want an connection to an remote database, the java-code will be in the database, so can I call createTemporary without >conn<?
(Oracle 10gR2, Windows, Linux, AIX)
The picture will be generated calling other java-code loaded with loadjava.
The java-source I want to write will be wrapped with PL/SQL.
Greetings
Bjørn

Hi!
It seems you can do this:
          try {
               conn = new OracleDriver().defaultConnection();                graphblob = oracle.sql.BLOB.createTemporary(conn, false,oracle.sql.BLOB.DURATION_CALL); // must init
               System.out.println("Blob is init");
          } catch ( java.sql.SQLException sEx ) {
               throw new RuntimeException ("No connection", sEx);
http://asktom.oracle.com/pls/ask/f?p=4950:8:::::F4950_P8_DISPLAYID:1285601748584
http://www.unix.org.ua/orelly/oracle/guide8i/ch09_08.htm
/Bjoern

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