RE: JDBC Problems -- JAVA400-L


Here's my example. What imports do you have at the top of your source?
Perhaps worth moving java,sql.* to the top (I assume the compiler will then
pick that up rather than another Connection class, but someone more expert
in Java than me may disagree - once the compiler has picked up the right
class my understanding is that you'll be OK at run time).

...

import java.sql.*;

...

  private String ERPJDBCDriver = null;
  private String ERPSystemName = null;
  private String ERPUser = null;
  private String ERPPassword = null;  [these values are read in from an XML
 message in my application]
...

    Connection conn = null;
...

    // Register correct JDBC driver
    try
    {
      System.err.println("Registering selected JDBC driver " +
ERPJDBCDriver);
      if (ERPJDBCDriver.compareTo("as400") == 0)
Class.forName("com.ibm.as400.access.AS400JDBCDriver");
      else if (ERPJDBCDriver.compareTo("odbc") == 0)
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
      else if (ERPJDBCDriver.compareTo("db2") == 0)
Class.forName("com.ibm.db2.jdbc.app.DB2Driver");
    } catch (Exception e)
      {
        System.err.println("Couldn't register JDBC driver: " + e);
        return "JDBCERR";
      } // end catch

    // Connect to destination machine
    try
    {
      System.err.println("Connecting to destination machine " +
ERPSystemName + " using : " + ERPUser + " with password : " + ERPPassword);
      conn = DriverManager.getConnection("jdbc:" + ERPJDBCDriver + ":" +
ERPSystemName, ERPUser, ERPPassword);
    } catch (Exception e)
      {
        System.err.println("Connection Exception: " + e);
        return "CONNERR";
      } // end catch

...






"Maarten Vries, de" <m_devries74@hotmail.com> on 31/01/2001 08:25:02

Please respond to JAVA400-L@midrange.com

To:   JAVA400-L@midrange.com
cc:    (bcc: Mandy Shaw/Pacific/UK)
Subject:  RE: JDBC Problems




Joe

I downloaded Visual Age for Java 2.0 Prof. and that gives me the same
error.
Compiling on the AS/400 V4R4 gives me the same error. The JT400.jar is in
my
classpath.
This is all getting very strange, anybody have a sample for me using JDBC
to
connect to an AS/400?

Maarten


>From: "Joe Teff" <JoeTeff@earthlink.net>
>Reply-To: JAVA400-L@midrange.com
>To: <JAVA400-L@midrange.com>
>Subject: RE: JDBC Problems
>Date: Tue, 30 Jan 2001 16:23:31 -0600
>
>I was going to reply in about the same words. I've never had to
>cast this and I can't see how that would help. You are using
>VA for Java 1.1? That's pretty old. What version of Java does
>VA/Java 1.1 use? Connection, ResultSet, Statement, etc. are
>all interfaces. Try compiling and running outside of VA/Java
>and see what happens. Make sure that jt400.jar is in your
>CLASSPATH.
>
>Joe Teff
>
>-----Original Message-----
>From: owner-java400-l@midrange.com
>[mailto:owner-java400-l@midrange.com]On Behalf Of Clapham, Paul
>Sent: Tuesday, January 30, 2001 3:14 PM
>To: JAVA400-L@midrange.com
>Subject: RE: JDBC Problems
>
>
>I'm not so sure about that.  The compiler message says you can't convert
>from java.sql.Connection to Connection, so I don't think an explicit cast
>will help.  Anyway, I never have to do that in my SQL programs.
>
>The question is:  If the compiler thinks Connection is not
>java.sql.Connection, then what is it?  Sounds like there's another
>unrelated
>Connection class kicking around in the classpath.
>
>PC2
>
>-----Original Message-----
>From: Nick.Vrtis@alticor.com [mailto:Nick.Vrtis@alticor.com]
>Sent: January 30, 2001 11:44
>To: JAVA400-L@midrange.com
>Subject: Re: JDBC Problems
>
>
>
>Duh!... as he hits himself for not reading...Try
>
>  conn = (Connection) java.sql.DriverManager.getConnection
>("jdbc:as400://KITS01");
>
>and do the cast explicitly.  You are getting a compiler error correct?
Not
>a run time exception?
>
>Nick
>
>
>
>
>"Maarten Vries, de" <m_devries74@hotmail.com>@midrange.com on 01/30/2001
>01:30:48 PM
>
>Please respond to JAVA400-L@midrange.com
>
>Sent by:  owner-java400-l@midrange.com
>
>
>To:   JAVA400-L@midrange.com
>cc:
>
>Subject:  Re: JDBC Problems
>
>
>Duncan
>
>When I do the try (as in this email)
>I get the same error: cannot convert from java.sql.Connection to
>Connection.
>I use Visual Age for Java 1.1
>
>Maarten
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      Regards,
      Mandy Shaw

      Catalyst Solutions plc
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