Re: Need to Learn about the Java ODBC

From:
"Charles Hottel" <chottel@earthlink.net>
Newsgroups:
comp.lang.java.programmer
Date:
Thu, 21 Feb 2008 19:26:49 -0500
Message-ID:
<13rs5lpagougj72@corp.supernews.com>
<kvnsmnsn@hotmail.com> wrote in message
news:5be1dfbb-06a1-4b1f-9557-a60af7f5b873@q70g2000hsb.googlegroups.com...

    From February to July of last year I worked for a company where I
wrote C code that accessed a PostgreSQL database with SQL commands and
generated the output my supervisor wanted.

    Now I'm working for a different company that doesn't have a C
compiler and doesn't really want me writing C code. The company does
have a Java compiler, and think Java is the better route to maintain-
able code. I'm still working with databases, and as I understand it I
can use the Java ODBC to generate SQL queries to get the information
my colleagues are looking for.

    Does anybody on this newsgroup know how I would go about using
Java this way? Is there any documentation on how to use the ODBC?
I've coded with Java before; in fact I have about five years of expe-
rience with Java; but I've never done anything with SQL with it.

                               ---Kevin Simonson

"You'll never get to heaven, or even to LA,
if you don't believe there's a way."
from _Why Not_


I am no expert, but here is a copy of an example from a book: "Beginning
Java 2" form Mike Murach and associates:

import java.sql.*;
import javax.swing.JOptionPane;

public class ConnectDB{
   public static void main(String[] args){

      Connection connection;
      try{
         Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
         String url = "jdbc:odbc:MurachBooks";
         String user = "Admin";
         String password = "";
         connection = DriverManager.getConnection(url, user, password);
         System.out.println("Connection made.");

         Statement statement = connection.createStatement(
         ResultSet.TYPE_SCROLL_SENSITIVE,
         ResultSet.CONCUR_UPDATABLE);
         String query = "SELECT BookCode, BookTitle, BookPrice "
                    + "FROM Books ORDER BY BookCode ASC";
         ResultSet books = statement.executeQuery(query);
         books.first();
         Book firstBook = new Book(books.getString(1),
                                 books.getString(2),
                                 books.getDouble(3));
        System.out.println(firstBook.toString());

        books.next();
        String code2 = books.getString(1);
        String title2 = books.getString(2);
        double price2 = books.getDouble(3);
        Book secondBook = new Book(code2, title2, price2);
        System.out.println(secondBook.toString());

        books.next();
        String code3 = books.getString("BookCode");
        String title3 = books.getString("BookTitle");
        double price3 = books.getDouble("BookPrice");
        Book thirdBook = new Book(code3, title3, price3);
        System.out.println(thirdBook.toString());
      }
      catch (ClassNotFoundException e){
         JOptionPane.showMessageDialog(null, e.getMessage());
         System.exit(1);
      }
      catch (SQLException e){
          JOptionPane.showMessageDialog(null, e.getMessage());
      }

   }

}

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