关于Java连接数据库的问题

Question

[code="java"]import java.sql.*;

public class MySQLtest{
Connection con = null;
public Connection getConnection(){
try {
Class.forName("com.mysql.jdbc.Driver");
System.out.println ("数据库驱动加载成功！");
con = DriverManager.getConnection("jdbc:mysql://localhost:3306/StudentSystem","ms","123456");
System.out.println ("数据库连接成功！");
}
catch (ClassNotFoundException e1) {
System.out.println ("数据库驱动加载失败！");
}catch(SQLException e2){
System.out.println ("数据库连接失败！");
}
return con;
}

public static void main(String[] args){
    MySQLtest mysql = new MySQLtest();
    mysql.getConnection();
    try {
        Statement sql = mysql.con.createStatement();
        ResultSet result = sql.executeQuery("Select * from studentinformation");
        while(result.next()){
            System.out.print (result.getString(1)+"  ");
            System.out.print (result.getString(2)+"  ");
            System.out.print (result.getString(3)+"  ");
            System.out.print (result.getString(4)+"  ");
            System.out.print (result.getString(5)+"  ");
            System.out.print (result.getString(6)+"  ");
            System.out.println ();
        }
        result.close();
        sql.close();
    }
    catch (Exception ex) {
        ex.printStackTrace();
    }
}

}[/code]

运行时候会出现错误:
数据库驱动加载成功！
数据库连接失败！
java.lang.NullPointerException
at MySQLtest.main(MySQLtest.java:24)
可能是连接数据库时候发生的错误，已经能够确定用户名密码正确，求解答，本人新手，如果问题低端请谅解。

Answer 1

我明白你的问题了，前两天有人提过这个问题的，你看看吧——[url=http://www.iteye.com/problems/65429]MYSQL的10061错误[/url]