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界面是

package 界面類;

import javax.jws.soap.SOAPBinding.Use;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JPasswordField;

import javax.swing.JTextArea;

import javax.swing.JTextField;

import javax.swing.event.AncestorListener;

import 數(shù)據(jù)庫具體查詢.clientresult1;

import 數(shù)據(jù)庫具體查詢.clientresult2;

import 數(shù)據(jù)庫具體查詢.credi_result;

import 數(shù)據(jù)庫具體查詢.userresult;

import 數(shù)據(jù)庫類.getconnect;

import 數(shù)據(jù)庫類.result;

import 界面類.mainframe;

import 管理員具體功能實(shí)現(xiàn).showleavemessage;

import 管理員具體功能實(shí)現(xiàn).telluser;

import 讀者信息管理.newuser;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.KeyListener;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.util.*;

import java.io.*;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

public class client extends JFrame implements ActionListener{

JLabel jl1;

JLabel jl2;

JLabel jl3;

JLabel jl4;

JButton **1;

JButton **2;

//public static String b6;

JTextField jtf;

JPasswordField jpf;

JPanel jp1;

JPanel jp2;

ResultSet rs=null;

Connection con = null;

Statement sm = null;

public static void main(String[] args) {

client c= new client();

}

// TODO 自動(dòng)生成的方法存根

public client (){

//先處理上面

JPanel jp1=new JPanel ();

jp1.setLayout(new GridLayout(2,2));

JLabel jl1 = new JLabel("用戶名",JLabel.CENTER);

JLabel jl2= new JLabel("密碼",JLabel.CENTER);

JTextField jtf = new JTextField();

JPasswordField jpf= new JPasswordField();

//jpf.setEchoChar('*');

jp1.add(jl1);

jp1.add(jtf);

jp1.add(jl2);

jp1.add(jpf);

//處理下面

JButton **1=new JButton("注冊(cè)");

**1.addActionListener(this);

JButton **2=new JButton("登陸");

**2.addActionListener(this);

JPanel jp2=new JPanel();

jp2.add(**1);

jp2.add(**2);

this.add(jp1);

this.add(jp2,BorderLayout.SOUTH);

this.setTitle("圖書管理系統(tǒng)-登陸"); //設(shè)置標(biāo)題

this.setSize(525,300);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

}

public void actionPerformed(ActionEvent arg0) {

if(arg0.getActionCommand().equals("注冊(cè)")){

//進(jìn)入注冊(cè)讀者界面

new newuser();

}

if(arg0.getActionCommand().equals("登陸")){

new mainframe();

}

}

}

數(shù)據(jù)庫是

然后把文本框中的與數(shù)據(jù)庫查到的進(jìn)行比較，然后驗(yàn)證

怎么寫，謝謝大家，急求