Re: JDBC runtime error....

["Richard Dettinger" <cujo@xxxxxxxxxx>]

I assume you are trying to run this on the iSeries and not the client.
Given that, your code looks pretty valid.

The Java class loader with the latest JV1 PTFs should automatically find
the native JDBC driver (you don't have
to put anything in any classpath anywhere).  So you might want to ensure
your PTFs are up to date.

Alternatively, you can ensure that you have the symlink to the
db2_classes.jar file in your extensions classpath
by hand.  You create a symlink to it.  The CL command to accomplish this
looks something like this:


     ADDLNK OBJ('/QIBM/ProdData/OS400/Java400/ext/db2_classes.jar') NEWLNK
('/QIBM/UserData/Java400/ext/db2_classes.jar')



Richard D. Dettinger
AS/400 Java Data Access Team

Democracy's enemies have always underestimated the courage of the American
people.
It was true at Concord Bridge.  It was true at Pearl Harbor.  And it was
true today.

         Rochester Post-Bulletin
         Tuesday September 11, 2001


"Mike Silvers" <msilvers@hbs-inc.com>@midrange.com on 11/20/2001 05:37:36
PM

Please respond to java400-l@midrange.com

Sent by:  java400-l-admin@midrange.com


To:   "Java 400-L" <java400-l@midrange.com>
cc:
Subject:  JDBC runtime error....



Hi All.

I am using JDBC for data connectivity.  The class for database connectivity
compiles with no problem.  When I run the class, I receive an error.  Does
anyone have any ideas?

The error I receive:


  java.lang.NoClassDefFoundError

java/lang/ClassLoader.defineClass(Ljava/lang/String;[BIILjava/security/Prote

ctionDomain;)Ljava/lang/Class;+79 (ClassLoader.
  java:486)

java/net/URLClassLoader.defineClass(Ljava/lang/String;Lsun/misc/Resource;)Lj

ava/lang/Class;+196 (URLClassLoader.java:270)
        java/net/URLClassLoader$ClassFinder.run()Ljava/lang/Object;+42
(URLClassLoader.java:572)

java/net/URLClassLoader.findClass(Ljava/lang/String;)Ljava/lang/Class;+16
(URLClassLoader.java:198)

java/lang/ClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;+41
(ClassLoader.java:297)

sun/misc/Launcher$AppClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Cl

ass;+33 (Launcher.java:286)

java/lang/ClassLoader.loadClassInternal(Ljava/lang/String;)Ljava/lang/Class;

+1 (ClassLoader.java:313)



My JDBC code is as follows:



  private void connectDB()  {

      // register the driver
      try {
        Class.forName("com.ibm.db2.jdbc.app.DB2Driver");
      } catch (Exception e) {
        System.out.println("Exception at Class.forName \n" + e);
      }
      //  connection info - set the library too.....

      String userId = "TESTUSR";
      String password = "testpass";
      String url = "jdbc:db2:localhost/IPINFO";

      //  connect to the 400

      try {

      p.put("user", userId);
      p.put("password", password);

      c = DriverManager.getConnection(url,p);

    } catch (Exception e) {
      System.out.println("Connection problem");
      e.printStackTrace();
    } catch (NoClassDefFoundError ncl)  {
      System.out.println("No Class Found \n" + ncl);
    }

  }


================================

Mike Silvers
AS/400 Senior Programmer/Analyst
AS/400 IBM Certified RPG IV Developer
AS/400 IBM Certified Expert
Hainey Business Systems
8 E. Canal St
Dover, PA 17315
Branch Office:  (410) 397-8739
Phone:  (800) 932-3380
Fax:  (717) 292-9474
Web: http://www.hbs-inc.com
________________________________
Providing E-Commerce, EDI, AS/400
Development and related services
nationwide.
================================


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