Example: Use native JDBC and IBM Toolbox for Java JDBC concurrently

//////////////////////////////////////////////////////////////////////////////////
//
// GetConnections example.
// 
// This program demonstrates being able to use both JDBC drivers at
// once in a program. Two Connection objects are created in this
// program. One is a native JDBC connection and one is a IBM Toolbox for Java
// JDBC connection.
// 
// This technique is convenient because it allows you to use different 
// JDBC drivers for different tasks concurrently. For example, the
// IBM Toolbox for Java JDBC driver is ideal for connecting to remote iSeries servers
// and the native JDBC driver is faster for local connections.
// You can use the strengths of each driver concurrently in your 
// application by writing code similar to this example.
//
//////////////////////////////////////////////////////////////////////////////////
//
// 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 GetConnections {

   public static void main(java.lang.String[] args) 
   {
       // Verify input.
       if (args.length != 2) {
          System.out.println("Usage (CL command line):  java GetConnections PARM(<user> <password>)");
          System.out.println(" where <user> is a valid iSeries user ID");
          System.out.println("   and <password> is the password for that user ID");
          System.exit(0);
       }
      
       // Register both drivers.
      try {
         Class.forName("com.ibm.db2.jdbc.app.DB2Driver");
         Class.forName("com.ibm.as400.access.AS400JDBCDriver");
      } catch (ClassNotFoundException cnf) {
         System.out.println("ERROR: One of the JDBC drivers did not load.");
         System.exit(0);
      }

      try {
         // Obtain a connection with each driver.
         Connection conn1 = DriverManager.getConnection("jdbc:db2://localhost", args[0], args[1]);
         Connection conn2 = DriverManager.getConnection("jdbc:as400://localhost", args[0], args[1]);

         // Verify that they are different.
         if (conn1 instanceof com.ibm.db2.jdbc.app.DB2Connection) 
            System.out.println("conn1 is running under the native JDBC driver.");
         else
            System.out.println("There is something wrong with conn1.");

         if (conn2 instanceof com.ibm.as400.access.AS400JDBCConnection) 
            System.out.println("conn2 is running under the IBM Toolbox for Java JDBC driver.");
         else
            System.out.println("There is something wrong with conn2.");

         conn1.close();
         conn2.close();
      } catch (SQLException e) {
         System.out.println("ERROR: " + e.getMessage());
      }
   }
}