Java连接Access数据库

package com.loginsystem.bean;
import java.sql.*;
public class ConnectionDataBase
{
    private static Connection MyConnection;
    private static Statement MySql;
    private static ResultSet MyResultSet;
    //创建数据库的连接.

    public static void MainConnection()
    {
        try
        {
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        }
        catch(ClassNotFoundException e)
        {
            System.out.println(e);
        }
        try
        {
            MyConnection=DriverManager.getConnection("jdbc:odbc:MyDataBase","","");
            MySql=MyConnection.createStatement();    
        }
        catch(SQLException el)
        {
            System.out.println(el);
        }
    }
    //关闭数据库的连接.

    public static void MyClose()
    {
        try
        {
            if(MyResultSet!=null)
            {
                MyResultSet.close();
            }
            if(MySql!=null)
            {
                MySql.close();
            }
            if(MyConnection!=null)
            {
                MyConnection.close();
            }
        }
        catch(SQLException el)
        {
            System.out.println(el);
        }
    }
    //检索数据库.

    public boolean IsExist(String username, String password)
    {
        try
        {
            String MySqlString="select * from StudentsTable where StuName='"+username+"' and Password='"+password+"'";
            MainConnection();
            MyResultSet=MySql.executeQuery(MySqlString);
            if(MyResultSet.next()==false)
            {
                MyClose();
                return false;
            }
            else
            {
                MyClose();
                return true;
            }
        }
        catch(SQLException el)
        {
            //System.out.println(el);

            return false;
        }
    }
    public void SelectData(String MySqlString)
    {
        try
        {
            MainConnection();
            MyResultSet=MySql.executeQuery(MySqlString);
            while(MyResultSet.next())
            {
                String StuID=MyResultSet.getString(1);
                String StuName=MyResultSet.getString(2);
                String StuSex=MyResultSet.getString(3);
                System.out.println("----------------------------");
                System.out.println("学号:"+StuID);
                System.out.println("姓名:"+StuName);
                System.out.println("性别:"+StuSex);
            }
            MyClose();
        }
        catch(SQLException el)
        {
            System.out.println(el);
        }
    }
    public ResultSet SelectDataSetf(String MySqlString)
    {
        try
        {
            MainConnection();
            MyResultSet=MySql.executeQuery(MySqlString);
            MyClose();
            return MyResultSet;
        }
        
        catch(SQLException el)
        {
            System.out.println(el);
            return null;
        }
    }    
    //插入数据.

    public void InsertData(String MySqlString)
    {
        try
        {
            MainConnection();
            MySql.executeUpdate(MySqlString);
            System.out.println("A Row Has Been Insertd!");
            MyClose();
        }
        catch(SQLException el)
        {
            System.out.println(el);
        }
    }
    //更新数据.

    public static void UpdateData(String MySqlString)
    {
        try
        {
            MainConnection();
            MySql.executeUpdate(MySqlString);
            System.out.println("A Row Has Been Updated!");
            MyClose();
        }
        catch(SQLException el)
        {
            System.out.println(el);
        }
    }
    //删除数据库.

    public void DeleteData(String MySqlString)
    {
        try
        {
            MainConnection();
            MySql.executeUpdate(MySqlString);
            System.out.println("A Row Has Been Deleted");
            MyClose();
        }
        catch(SQLException el)
        {
            System.out.println(el);
        }
    }
    /*public static void main(String args[])
    {
        //String MySqlString="update StudentsTable set StuName='liuming' where StuID=3";
        String MySqlString="select * from StudentsTable";
        //String MySqlString="delete StudentsTable where StuName='liuming'";
        //String MySqlString="insert into StudentsTable values(6,'关羽','男')";
        //UpdateData(MySqlString);
        SelectData(MySqlString);
        //InsertData(MySqlString);
        //DeleteData(MySqlString);
    }*/
}