MySQL connectivity Problem URGENT plz

Question

Hi
plz can any one help me... its urgent
i need java to connect to MySQL database.with mm.mysql.Driver
the following sample code is just copied from the site and made changes in hostname, dbname and username.
classpath has been given correctly for the mm.mysql.Driver package (mysql.jar).
Thanx in advance....
Result
compilation --> success
while executing i get the following Error.
java.sql.SQLException: General Error: null
     at org.git.mm.mysql.connection.<init>(Connection.java)
     at org.git.mm.mysql.Driver.connect(Driver.java)
     at java.sql.DriverManager.getConnection(DriverManager.java: 515)
     at java.sql.DriverManager.getConnection(DriverManager.java: 197)
     at JDBCDemoCreate.getConnection(JDBCDemoCreate.java: 36)
     at JDBCDemoCreate.<init>(JDBCDemoCreate.java: 14)
java.lang.NullPointerException
     at JDBCDemoCreate.<init>(JDBCDemoCreate.java: 17)
     at JDBCDemoCreate.main(JDBCDemoCreate.java: 47)
Here is the code. can any one try this !
// JDBCDemoCreate.java
1.     import java.util.*;
2.     import java.sql.*;
3.
4.     public class JDBCDemoCreate {
5.
6.     private static final String hostname = "hostname";
7.     private static final String port = "3306";
8.     private static final String database = "dbname";
9.     private static final String username = "username";
10.     private static final String password = "";
11.
12.     public JDBCDemoCreate() {
13.
14.          Connection c = getConnection();
15.
16.          try {
17.               Statement s = (Statement)c.createStatement();
18.               s.executeUpdate("CREATE TABLE rich ( id int primary key, name char(25) )");
19.          } catch ( Exception e ) {
20.               e.printStackTrace();
21.          }
22.
23.     }
24.
25.     private Connection getConnection() {
26          // Register the driver using Class.forName()
27.          try {
28.               Class.forName("org.gjt.mm.mysql.Driver").newInstance();
29.          } catch ( Exception e ) {
30.               e.printStackTrace();
31.          }
32.
33.          // ask the DriverManager for a connection to the database
34.          Connection conn = null;
35.          try {
36.               conn = DriverManager.getConnection("jdbc:mysql://" + hostname +
37.                                                                      ":"+ port +"/" + database +
38.                                                                      "?user=" + username +
39.                                                                      "&password=" + password );
40.          } catch (Exception e) {
41.               e.printStackTrace();
42.          }
43.          return conn;
44.     }
45.     
46.     public static void main( String[] args ) {
47.          new JDBCDemoCreate();
48.     }
49.}

Answer 1

Hi!
You can try with this code coz, i worked with this code only and then i can talk to the database.
Connection con;
Class.forName("org.gjt.mm.mysql.Driver";
con = DriverManager.getConnection("jdbc:mysql:///db?user=root&password=");
Try it out!
Queries regarding this is welcome. Either in this forum itself or u can contact in the mail, the id is
[email protected]
Regards,
dinesh