Example: Invalid user ID and password

//////////////////////////////////////////////////////////////////////////////////
//
// InvalidConnect example.
// 
// This program uses the Connection property in SQL naming mode.
//
//////////////////////////////////////////////////////////////////////////////////
//
// This source is an example of the IBM Developer for Java JDBC driver.
// IBM grants you a nonexclusive license to use this as an example
// from which you can generate similar function tailored to
// your own specific needs.
//
// This sample code is provided by IBM for illustrative purposes
// only. These examples have not been thoroughly tested under all
// conditions. IBM, therefore, cannot guarantee or imply
// reliability, serviceability, or function of these programs.
//
// All programs contained herein are provided to you "AS IS"
// without any warranties of any kind.  The implied warranties of
// merchantability and fitness for a particular purpose are
// expressly disclaimed.
//
// IBM Developer Kit for Java
// (C) Copyright IBM Corp. 2001
// All rights reserved.
// US Government Users Restricted Rights -
// Use, duplication, or disclosure restricted
// by GSA ADP Schedule Contract with IBM Corp.
//
//////////////////////////////////////////////////////////////////////////////////
import java.sql.*;
import java.util.*;

public class InvalidConnect {

    public static void main(java.lang.String[] args) 
    {
        // Register the driver.
        try {
            Class.forName("com.ibm.db2.jdbc.app.DB2Driver");
        } catch (ClassNotFoundException cnf) {
            System.out.println("ERROR: JDBC driver did not load.");
            System.exit(0);
        }

        // Attempt to obtain a connection without specifying any user or
        // password. The attempt works and the connection uses the 
        // same user profile under which the job is running.
        try {
            Connection c1 = DriverManager.getConnection("jdbc:db2:*local");
            c1.close();
        } catch (SQLException e) {
            System.out.println("This test should not get into this exception path.");
            e.printStackTrace();
            System.exit(1);
        }

        try {
            Connection c2 = DriverManager.getConnection("jdbc:db2:*local", 
                                                        "notvalid", "notvalid");
        } catch (SQLException e) {
            System.out.println("This is an expected error.");
            System.out.println("Message is " + e.getMessage());
            System.out.println("SQLSTATE is " + e.getSQLState());
        }

    }
}