Connect to a Local MySQL database

I am creating a java application and need to use a database. I decided to use a local MySQL database. I'm having difficulties to establish a connection to the database. I have analyzed various codes for this problem on the internet and wrote my own code similar to those that I analyzed. I don't see why the code below does not work because I also put the path to the connector inside the variable classpath to the environment. I did everything that was suggested on various jdbc tutorial sites and yet my code does not work. Any suggestion would be appreciated. I already posted a thread on this issue before, but the suggestions really helped and I'm hoping to get different results this time.

These are the errors I get:

January 2, 2011 18:10:22 homeworkorganizer. Database addCourse
GRAVE: null
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
in java.net.URLClassLoader$ 1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged (Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
to Sun.misc.Launcher$appclassloader$ AppClassLoader.loadClass (Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at java.lang.Class.forName0 (Native Method)
at java.lang.Class.forName(Class.java:169)
to homeworkorganizer. Database.addCourse (Database.java:28)
at homeworkorganizer.test.main(test.java:17)
January 2, 2011 18:10:22 homeworkorganizer. Database addCourse
GRAVE: null
java.sql.SQLException: no suitable driver found for jdbc:mysql://localhost/homework
at java.sql.DriverManager.getConnection(DriverManager.java:602)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
to homeworkorganizer. Database.addCourse (Database.java:51)
at homeworkorganizer.test.main(test.java:17)
BUILD successful (total time: 0 seconds)


Code I have:


/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package homeworkorganizer;
import java.sql. *;
import java.util.ArrayList;
import java.util.Properties;
import java.util.StringTokenizer;
import java.util.logging.Level;
to import java.util.logging.Logger;
java.net import. *;


/**
*
Nisha * @author
*/
public class {Database



private String ipAdress = "localhost";

' public void addCourse (String courseNumber, String courseCredit, String courseName) {}
try {}
Class.forName ("com.mysql.jdbc.Driver");

} catch (ClassNotFoundException ex) {}
Logger.getLogger (Database.class.getName ()) .log (Level.SEVERE, null, ex);

}

Server String = "jdbc: / /" + ipAdress + "/"; "."
String dbName = "homework."

String url = Server + dbName;

Properties props = new Properties ();
props.setProperty ("user", "Christian");
props.setProperty ("password", "pass");

Connection Conn;
Statement st;
String columns = "course_number, no_credits, course_name;
String sqlInsrt = "insert current ()" + columns + ") values";

try {}

Conn = DriverManager.getConnection ("jdbc:mysql://localhost/homework", "root", "kish");
System.out.println ("connected to the database\n");
St = conn.createStatement ();


Add the user to the database
String userInfo = "(""+ courseNumber +" ', '"+ courseCredit +" ', '"+ courseName +" ")"; "

Use executeUpdate when our statement will change the database.
st.executeUpdate (sqlInsrt + userInfo);


}
catch (SQLException ex) {}
Logger.getLogger (Database.class.getName ()) .log (Level.SEVERE, null, ex);
}

}
}

According to the error, your class cannot find driver class... This means that you have not added the mysql connector jar file in your build or lib path... Please check the same...

Tags: Java

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