JAVA连接mysql数据库的问题

import java.sql.*;
import java.sql.Connection;
import com.mysql.jdbc.*;
public class DataProcess 
{

public static void main(String[] args) throws SQLException,ClassNotFoundException
{



try
{

Class.forName("com.mysql.jdbc.Driver");
Connection conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/test?"+"user=root&password=123&useUnicode=true&characterEncoding=gb2312");
}
catch(SQLException e)
{
e.printStackTrace(); }
catch(ClassNotFoundException e)
{
e.printStackTrace(); }
}
}
抛出的异常是:
java.lang.NoClassDefFoundError: java/sql/Savepoint
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:270)
at java.sql.DriverManager.getConnection(DriverManager.java:543)
at java.sql.DriverManager.getConnection(DriverManager.java:216)
at DataProcess.main(DataProcess.java:28)
Exception in thread "main" 
请问这是什么意思呀,难道是我的驱动的错?我的驱动是mysql-connector-java-3.2.0-alpha-bin.jar!
谢谢大家帮我指点一下,我在线等....