Win a copy of Think Java: How to Think Like a Computer Scientist this week in the Java in General forum!
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic

MySql help needs

 
fengzixuan zheng
Ranch Hand
Posts: 31
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I got a problem with my codes when I want to connect to a MySql database.
I have successfullly installed the MySql-4.0.0a-alpha-win, and have the MySql services running.
I copy the the mm.mysql-2.0.4-bin.jar to my JDK root-dir: D:\J2SE; so I set the classpath: "D:\J2SE\src.jar; D:\J2SE\mm.mysql-2.0.4-bin.jar"
My codes :
import java.io.*;
import java.sql.*;
import org.gjt.mm.mysql.*;
public class MySqlTest{
Connection DBConn;
ResultSet rs;
Statement stmt;
String dsn;
String query;
public MySqlTest(){
try{
Class.forName("org.gjt.mm.mysql.Driver");
}
catch(ClassNotFoundException ce) {
ce.printStackTrace();
}
}
public static void main(String args[]) {
MySqlTest mst=new MySqlTest();
}
}

Compiles OK, but when running, it gives :
java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver
����
����

Plesae help me.
Regards
 
Adam Hardy
Ranch Hand
Posts: 567
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Well your compiler is finding the jar files but the application server isn't. You need to check that it has the jar files in the CLASSPATH. Which server is it?
 
david long
Greenhorn
Posts: 8
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi, fengzixuan zheng
try putting your drive jar file into D:\J2SE
/jre/lib/ext directory, so and you even don't need use classpath for your driver.
if 'ext' folder no exsit, make one.
 
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic