public void createLogTable(String tableName){
        try {
            st.executeUpdate("create table "+tableName+" (ID INT NOT NULL DEFAULT nextval('log_seq'::regclass), DateTime TIMESTAMP,                 Message VARCHAR(200), KodR INT, Kode INT, Level INT, Voltage INT, Power INT)");
            //System.out.println("Table "+tableName+" created");
        } catch (SQLException e) {
            System.out.println("SQL Exception while creating DB: "+e.getMessage()+"\n"+e.getStackTrace());
        }
    }