JDBC isn't running

Hi again,

I have configured the variable:
CLASSPATH=/usr/local/pgsql/share/java/postgresql.jar:.

and compiled (without errors) the following source code:

// -- begin
/**
 * A demo program to show how jdbc works with postgresql
 * Nick Fankhauser 10/25/01
 * nickf@ontko.com or nick@fankhausers.com
 * This program may be freely copied and modified
 * Please keep this header intact on unmodified versions
 * The rest of the documentation that came with this demo program
 * may be found at http://www.fankhausers.com/postgresql/jdbc
 */

import java.sql.*;   // All we need for JDBC
import java.text.*;
import java.io.*;

public class HelloPostgresql
{
  Connection       db;        // A connection to the database
  Statement        sql;       // Our statement to run queries with
  DatabaseMetaData dbmd;      // This is basically info the driver delivers
                              // about the DB it just connected to. I use
                              // it to get the DB version to confirm the
                              // connection in this example.

  public HelloPostgresql(String argv[])
    throws ClassNotFoundException, SQLException
  {
    String database = argv[0];
    String username = argv[1];
    String password = argv[2];
    Class.forName("org.postgresql.Driver"); //load the driver
    db = DriverManager.getConnection("jdbc:postgresql:"+database,
 username,
 password); //connect to the db
    dbmd = db.getMetaData(); //get MetaData to confirm connection
    System.out.println("Connection to "+dbmd.getDatabaseProductName()+" "+
dbmd.getDatabaseProductVersion()+"
successful.\n");
    sql = db.createStatement(); //create a statement that we can use later

    String sqlText = "create table jdbc_demo (code int, text varchar(20))";
    System.out.println("Executing this command: "+sqlText+"\n");
    sql.executeUpdate(sqlText);

    sqlText = "insert into jdbc_demo values (1,'One')";
    System.out.println("Executing this command: "+sqlText+"\n");
    sql.executeUpdate(sqlText);

    sqlText = "insert into jdbc_demo values (3,'Four')";
    System.out.println("Executing this command twice: "+sqlText+"\n");
    sql.executeUpdate(sqlText);
    sql.executeUpdate(sqlText);

    sqlText = "update jdbc_demo set text = 'Three' where code = 3";
    System.out.println("Executing this command: "+sqlText+"\n");
    sql.executeUpdate(sqlText);
    System.out.println (sql.getUpdateCount()+
" rows were update by this statement\n");

    System.out.println("\n\nNow demostrating a prepared statement...");
    sqlText = "insert into jdbc_demo values (?,?)";
    System.out.println("The Statement looks like this: "+sqlText+"\n");
    System.out.println("Looping three times filling in the fields...\n");
    PreparedStatement ps = db.prepareStatement(sqlText);
    for (int i=10;i<13;i++)
    {
      System.out.println(i+"...\n");
      ps.setInt(1,i);         //set column one (code) to i
      ps.setString(2,"HiHo"); //Column two gets a string
      ps.executeUpdate();
    }
    ps.close();


    System.out.println("Now executing the command: "+
"select * from jdbc_demo");
    ResultSet results = sql.executeQuery("select * from jdbc_demo");
    if (results != null)
    {
      while (results.next())
      {
        System.out.println("code = "+results.getInt("code")+
"; text = "+results.getString(2)+"\n");
      }
    }
    results.close();


    sqlText = "drop table jdbc_demo";
    System.out.println("Executing this command: "+sqlText+"\n");
    sql.executeUpdate(sqlText);

    db.close();
  }

  public static void correctUsage()
  {
    System.out.println("\nIncorrect number of arguments.\nUsage:\n "+
"java   \n");
    System.exit(1);
  }

  public static void main (String args[])
  {
    if (args.length != 3) correctUsage();
    try
    {
      HelloPostgresql demo = new HelloPostgresql(args);
    }
    catch (Exception ex)
    {
      System.out.println("***Exception:\n"+ex);
      ex.printStackTrace();
    }
  }
}
// -- end

$ javac HelloPostgresql.java
$ java HelloPostgresql.class
Exception in thread "main" java.lang.NoClassDefFoundError: HelloPostgresql/class

Where am I going wrong?? I have Java (J2SDK) and Ant
(Jakarta-Ant) configured properly, and postgresql (7.3.1) was configured
with ``--with-java'' option.

I have created a table on postgresql, with some fields, to test this code,
but when I run it crashes instantly with the message above.

The driver (postgresql.jar) was compiled and I have set CLASSPATH as
above. Why doesn't it code run?

Thanks in advance and
Best Regards,

Marcelo Pereira

-- Remember that only God and ^[:w saves.
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