jdbc vs. odbc performance

Hello, all

I have a performance problem. I tried the below java program to connect
with PostgreSQL.
I have a table with 8k rows and if I do a "SELECT * FROM mytable" using
JDBC it takes 50 secs of time to get all rows, using JDBC:ODBC bridge
it takes only 15 secs.
I thought JDBC was faster than ODBC.
Am I doing something wrong ?
Please help me.

I am using:
            o Linux 2.0.31
            o jdk 1.1.5
            o PostgreSQL 6.3
            o PSQLODBC.DLL 6.3 (postdrv.exe) Insight Distribution System

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public void createConnectionDialog() {
//using JDBC:
        userNameLabel = new JLabel("User name: ", JLabel.RIGHT);
     userNameField = new JTextField("postgres");
    passwordLabel = new JLabel("Password: ", JLabel.RIGHT);
    passwordField = new JTextField("");
        serverLabel   = new JLabel("Database URL: ", JLabel.RIGHT);
    serverField   = new JTextField("jdbc:postgresql://verde/java");
    driverLabel   = new JLabel("Driver: ", JLabel.RIGHT);
    driverField   = new JTextField("postgresql.Driver");

//using ODBC:
    userNameLabel = new JLabel("User name: ", JLabel.RIGHT);
     userNameField = new JTextField("postgres");
    passwordLabel = new JLabel("Password: ", JLabel.RIGHT);
    passwordField = new JTextField("");
        serverLabel   = new JLabel("Database URL: ", JLabel.RIGHT);
    serverField   = new JTextField("jdbc:odbc:Sfera");
    driverLabel   = new JLabel("Driver: ", JLabel.RIGHT);
    driverField   = new JTextField("sun.jdbc.odbc.JdbcOdbcDriver");
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                                                       Jose'