• Subject: Re: JDBC Problems
  • From: "Fred Kulack" <kulack@xxxxxxxxxx>
  • Date: Tue, 30 Jan 2001 15:30:52 -0600
  • Importance: Normal


Hmmm... I THINK that in this particular case, a Connection class that
is defined in the UNNAMED package would probably cause the
error you're seeing.

Why?
1) java.sql.DriverManager.getConnection() will ALWAYS return a
java.sql.Connection object.

2) Since you've imported java.sql.* in your source, an
Connection declaration that is not package qualified you shouldn't
need a cast. Instead, your Connection object reference will ALWAYS:
A) be a java.sql.Connection, the only Connection class declared or imported
  OR
B) If you've got another Connection class in a different package, you will
get an ambiguous class reference error. If the other Connection
class is in the unnamed package you could get this error.

Did you define or can you find another definition for Connection
in the VA repository? (probably the unnamed package).
That class is causing you problems.
Fully qualify the Connection object as a java.sql.Connection object
or get rid of the other Connection class.


"Do you believe that my being stronger or faster has anything
 to do with my muscles in this place?" ... "Free your mind."
Laurence Fishburne as Morpheus in 'The Matrix'.

Fred A. Kulack  -  AS/400e  Java and Java DB2 access, Jdbc, JTA, etc...
IBM in Rochester, MN  (Phone: 507.253.5982   T/L 553-5982)
mailto:kulack@us.ibm.com   Personal: mailto:kulack@bresnanlink.net
AOL Instant Messenger: Home:FKulack  Work:FKulackWrk


Nick.Vrtis@alticor.com@midrange.com on 01/30/2001 01:43:32 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




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


>From: Duncan_Folkes@cuk.canon.co.uk
>Reply-To: JAVA400-L@midrange.com
>To: JAVA400-L@midrange.com
>Subject: Re: JDBC Problems
>Date: Tue, 30 Jan 2001 13:38:48 +0000
>
>
>
>Maarten,
>
>A try statement must be accompanied by at least one catch block or
>one finally block.
>
>try (pardon the pun!)
>
>import com.ibm.as400.access.*;
>import java.sql.*;
>
>public class DisplayAudit {
>
>
>public static void main(java.lang.String[] args) {
>
>try {
>
>
>DriverManager.registerDriver(new com.ibm.as400.access.AS400JDBCDriver());
>Connection conn  =
>java.sql.DriverManager.getConnection("jdbc:as400://KITS01");
>
>Statement stmt = conn.createStatement();
>ResultSet rs = stmt.executeQuery("select * from " +
>      "kleinr.audit");
>
>while(rs.next())
>{
>      java.math.BigDecimal custID = rs.getBigDecimal("CDENTL", 0);
>      String custName = rs.getString("CDJOB");
>      String custStreet = rs.getString("CDUSPF");
>      String custCity = rs.getString("CDETYP");
>
>      System.out.println("Customer ID     : " + custID);
>      System.out.println("Customer Name   : " + custName);
>      System.out.println("Customer Street : " + custStreet);
>      System.out.println("Customer City   : " + custCity);
>}
>
>
>conn.close();
>rs.close();
>}
>catch (Exception e) {
>System.out.println("Exception: " + e);
>e.printStackTrace();
>}
>}
>}
>
>
>Duncan
>
>
>Dr Duncan E. Folkes
>
>
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