数据库提取数据的问题

帮忙改一下，acess中的数据好象与swing编的程序连不上， if(s==rs.getString("account")){}里的语句都没执行啊？
import java.sql.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
public class myCard extends JFrame implements ActionListener
{   
     
  Container myContainer=getContentPane();                      //登陆界面
  CardLayout myLayout=new CardLayout();  JPanel panel2=new JPanel();                                                           
  JLabel label2=new JLabel("请输入用户帐号:");
  JTextField textfield2=new JTextField(6);
  JButton button2=new JButton("注册用户");  JPanel panel3=new JPanel();
  JLabel label3=new JLabel("success");
  myCard()
  {      
    setSize(500,500);
    setTitle("我的卡片");
    myContainer.setLayout(myLayout);
 
    myContainer.add(panel2,"panel2");                 
    myContainer.add(panel3,"panel3");  
                        
    panel2.add(label2);
    panel2.add(textfield2);
    panel2.add(button2);
    button2.addActionListener(this);
    panel3.add(label3);    myLayout.show(myContainer,"panel2");
  }   
  public void actionPerformed(ActionEvent e)
  {
    String s=new String(textfield2.getText());   
    try{      
         Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
         String url="jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ=g:/J/db1.mdb";
         Connection connection=DriverManager.getConnection(url,"","");  
         Statement statement=connection.createStatement();
         String sql="Select * from table2 where ID=1";
         ResultSet rs=statement.executeQuery(sql);
         if(rs!=null)
         {
           while(rs.next())
           {
             System.out.println(rs.getString("account"));
           }
        }         
        if(e.getSource()==button2)  
        {
          if(s==rs.getString("account"))
          {
            myLayout.show(myContainer,"panel3");
          }
          else
          {
            System.exit(0);
          }
        }  
        rs.close();
        connection.close();
        statement.close();
      } 
      catch(Exception  ex)
      {  
        ex.printStackTrace();
      }                   
  }
  public static void main(String args[])
  {
    myCard frame=new myCard();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.show(); 
  }
}
ID account password name sex age date
1 20050001 111111 peng male 22 2005-6-1
2 20050002 222222 zhang male 21 2005-6-1
3 20050003 333333 jia female 20 2005-6-1