insert bytea type into PostgreSQL database

Hi,

I would like to insert bytea type of data into the
PostgreSQL database. On the prompt where database is
running I get an error that says: ERROR: Attribute
'image_data' is of type 'bytea' but _expression is of
type 'int4'.

Java class called ImageDb has this method that tries
to insert data into the table.
public void setImage(long imageId, long objId, String
imageName, BufferedInputStream bis , int imageSize,
String imageFor){
try{
String sqlText;
db.setAutoCommit(false);
sqlText = "insert into image(image_id, obj_id,
image_name, image_for, image_data) values(?, ?, ?, ?,
?)";
ps = db.prepareStatement(sqlText);
ps.setLong(1, imageId);
ps.setLong(2, objId);
ps.setString(3, imageName);
ps.setString(4, imageFor);
ps.setBinaryStream(5, bis, imageSize);
ps.executeUpdate();
ps.close();
db.setAutoCommit(true);
}catch(SQLException sqle){
System.out.println("ImageDb class threw
SQLException");!
System.out.println("It came from setImage(x,x,x,x)
method ");
sqle.printStackTrace();
}
}

Here is piece of the servlet called StorePostDone.java
that actually calls the method of ImageDb.java.
if(fileName != null){
long size = filePart.writeTo(dir);
long lImageSize = filePart.writeTo(dir);
int imageSize = (int)lImageSize;
long imageId = 21;
long objId = 43;
String imageName = filePart.getFileName();
file://FileInputStream fis = new
FileInputStream(filePart.getInputStream());
BufferedInputStream bis = new
BufferedInputStream(filePart.getInputStream());
imageDb.setImage(imageId, objId, imageName, bis,
imageSize, "sell");

As far as the table schema:
image_id, obj_id are bigint
image_for, image_name are varchar(50)
image_data is bytea

Does anybody know why I am not able to insert bytea
type data into the database.

Thanks,
Sanjeev Rathore

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