JDBC and BLOB in Postgres

Hi,

I'm trying  Blob with JDBC Driver jdbc7.0-1.2  on postgresql 7.0.2
(Mandrake 7.1) follwing the example given in paragraph "Using Large
Objects" Chapter 58. JDBC Interface.

the getBinaryStream seems ok provided the blob is in the database, 
while the setBinaryStream method call returns : 
Error : InputStream as parameter not supported

Did I miss something ?

Thanks in advance.

The Code I'm using: 

File file = new File("Blob.class");
FileInputStream fis = new FileInputStream(file);            
cx.setAutoCommit(false);
ps = cx.prepareStatement("insert into mytable (myid, myblob) values (1,
?)");
ps.setBinaryStream(1, fis, (int) file.length());
ps.executeUpdate();
ps.close();
fis.close();
cx.commit();