Passing Array from Java to Postgres

Hi,
I need to pass array from Java to postgres DB.Tried the following
code given in net,but it doesnt work,please help me to solve this.

Getting no exceptions but program execution skips when it reaches
the following code
cstmt.setArray(2, connection.createArrayOf("int4", intarr ));

I have also copied the following code for reference,

DBConnection dbconn=new DBConnection();
Connection connection=dbconn.getDBConnection();
CallableStatement cstmt = connection.prepareCall("{?=
call testit(?)}");
cstmt.registerOutParameter(1, Types.INTEGER);
try{
cstmt.setArray(2, connection.createArrayOf("int4",
intarr ));
}catch(Exception e) {
e.printStackTrace();
}
cstmt.execute();
result = cstmt.getInt(1);

Regards,
Latha S