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## Example files for the title:  

# Java Database Programming, by Mike McMillan

[![Java Database Programming, by Mike McMillan](http://akamaicovers.oreilly.com/images/9781771371674/cat.gif)](https://www.safaribooksonline.com/library/view/title/9781771371674//)

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O'Reilly books are here to help you get your job done. In general, you may use the code in O'Reilly books in your programs and documentation. You do not need to contact us for permission unless you're reproducing a significant portion of the code. For example, writing a program that uses several chunks of code from our books does not require permission. Answering a question by citing our books and quoting example code does not require permission. On the other hand, selling or distributing a CD-ROM of examples from O'Reilly books does require permission. Incorporating a significant amount of example code from our books into your product's documentation does require permission.

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import java.sql.*;

public class ConnectDB {

   Connection connection;

   public ConnectDB() {

      try {

         Class.forName("com.mysql.jdbc.Driver").newInstance();

      }

      catch (Exception e) {

         System.out.println("Could not load driver.");

      }

   }

   public void connectToDB() {

      try {

         connection = DriverManager.getConnection(

            "jdbc:mysql://localhost/library", "mike", "password");

         System.out.println("Connected to database.");

      }

      catch (Exception e) {

         System.out.println("Cannot connect to database.");

      }

   }

   public void execSQL() {

      try {

         Statement stmt = connection.createStatement();

         ResultSet rs = stmt.executeQuery("Select * from books");

         while (rs.next()) {

            System.out.println(rs.getString(1) + " " + rs.getString(2) +

                               " " + rs.getString(3));

         }

      }

      catch (Exception e) {

         System.out.println("Error executing SQL");

      }

   }

   public static void main(String[] args) {

      ConnectDB conn = new ConnectDB();

      conn.connectToDB();

      conn.execSQL();

   }

}

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public class TestConnection {

   public static void main(String[] args) {

      try {

         Class.forName("com.mysql.jdbc.Driver").newInstance();

         System.out.println("Connected to MySQL");

      }

      catch (Exception e) {

         System.out.println("Cannot connect to MySQL");

      }

   }

}

import java.sql.*;

public class ConnectDB {

   Connection connection;

   public ConnectDB() {

      try {

         Class.forName("com.mysql.jdbc.Driver").newInstance();

      }

      catch (Exception e) {

         System.out.println("Could not load driver.");

      }

   }

   public void connectToDB() {

      try {

         connection = DriverManager.getConnection(

            "jdbc:mysql://localhost/library", "mike", "password");

         System.out.println("Connected to database.");

      }

      catch (Exception e) {

         System.out.println("Cannot connect to database.");

      }

   }

   public static void main(String[] args) {

      ConnectDB conn = new ConnectDB();

      conn.connectToDB();

   }

}

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