JSP如何保存用户上次登录时间

public class MSAccessDB { 
private PreparedStatement pStmt=null; 
private Connection msConn=null;

public MSAccessDB() { 
jbInit(); 
listLoginData();//列出用户信息,上次登录时间... 
listLoginData();//再次显示用户信息，以便对比 
catch(Exception e) { 
} 
private void listLoginData() throws SQLException { 
while (rs.next()) { 
System.out.print(rs.getString("nick_name")+""t"); 
System.out.print(rs.getString("first_name")+""t"); 
} 
private void updateUserLogin(int userID) throws SQLException { 
pStmt.setDate(1,today); 
pStmt.executeUpdate(); 
private void jbInit() throws Exception { 
msConn=DriverManager.getConnection("jdbc:odbc:test_db;;;"); 
pStmt=msConn.prepareStatement(psStr); 
}

public static void main(String args) { 
}