java界面登录代码

求JAVA实现用户登录界面代码?

你要先学会截图哦,你发的看不清楚,重新写了一个你参考参考!

import java.awt.GridLayout;

import javax.swing.ButtonGroup;

import javax.swing.JButton;

import javax.swing.JComboBox;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JRadioButton;

import javax.swing.JTextField;

private static final long serialVersionUID = 1L;

private JLabel labelName,labelId,labelPass,labelMoney,labelSelect,labelCar;

private JComboBoxString jcb;

private ButtonGroup btg;

this.setTitle("注册账户");

this.setLocationRelativeTo(null);

this.setDefaultCloseOperation(EXIT_ON_CLOSE);

init();

this.setVisible(true);

}

private void init() {

jcb=new JComboBox(str.split(","));

labelId=new JLabel("账号:");

labelName=new JLabel("姓名:");

labelPass=new JLabel("密码:");

labelMoney=new JLabel("开户金额:");

labelSelect=new JLabel("存款类型:");

labelCar=new JLabel("卡片类型:");

addFun1();

this.add(jp1);

private void addFun1() {

jp1=new JPanel();

jp1.add(labelId);

btg=new ButtonGroup();

jr1=new JRadioButton("定期");

btg.add(jr1);

public static void main(String[] args) {

登录界面的java代码,分别有教师登录,管理员登录,学生登录,右边是用户名和密码,见图.

分三个包,自己建个包,导进去就ok了,数据库是access的.

package 登录;

import java.awt.EventQueue;

public class Cilent {

private JFrame frame;

private JTextField textField;

private JPasswordField passwordField;

/**

* Launch the application.

*/

EventQueue.invokeLater(new Runnable() {

public void run() {

try {

Cilent window = new Cilent();

window.frame.setVisible(true);

} catch (Exception e) {

e.printStackTrace();

});

* Create the application.

public Cilent() {

initialize();

* Initialize the contents of the frame.

private void initialize() {

frame = new JFrame();

frame.setTitle("登陆界面");

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.getContentPane().setLayout(null);

frame.setResizable(false);

JLabel lblNewLabel = new JLabel("用户名");

frame.getContentPane().add(lblNewLabel);

textField = new JTextField();

frame.getContentPane().add(textField);

textField.setColumns(10);

JLabel label = new JLabel("密　码");

frame.getContentPane().add(label);

passwordField = new JPasswordField();

frame.getContentPane().add(passwordField);

JButton btnNewButton = new JButton("登　录");

frame.getContentPane().add(btnNewButton);

btnNewButton.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent arg0) {

// TODO Auto-generated method stub

UserCheck UC=new UserCheck(textField.getText(),String.valueOf(passwordField.getPassword()));

if(UC.getI()!=0) //有此用户

{

frame.setVisible(false);

else

textField.setText("");

passwordField.setText("");

JButton button = new JButton("取　消");

frame.getContentPane().add(button);

button.addActionListener(new ActionListener() {

/*****************************************************************/

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

import 操作处理.UsersCL;

* 检测登录的用户在数据库中有无,若没有,则提示没有此用户,

* 若有,则判断级别：普通用户还是管理员.

public class UserCheck {

UserCheck(String name ,String password)

String jdriver="sun.jdbc.odbc.JdbcOdbcDriver";

String connectDB="jdbc:odbc:Students";

Statement stmt=null;

ResultSet rs=null;

Connection con=null;

Class.forName(jdriver);

con=DriverManager.getConnection(connectDB);

stmt=con.createStatement();

String query="select * from users where name='"+name+"' and passwd='"+password+"'";

rs=stmt.executeQuery(query);

if(rs.next())

//数据库中有此用户,访问成功

UsersCL UL=new UsersCL(i);

i=0; //没有用户是默认是0级

} catch (ClassNotFoundException e) {

// TODO Auto-generated catch block

} catch (SQLException e) {

public int getI() {

return i;

/********************************************************************************************/

package 操作处理;

public class UsersCL implements ActionListener{

private JTextField textField_1;

private int i=0;

public UsersCL(int i) {

this.i=i;

frame.setTitle("用户处理界面");

frame.setVisible(true);

JLabel lblNewLabel = new JLabel("学　号");

JLabel label = new JLabel("姓　名");

JLabel label_1 = new JLabel("年　龄");

frame.getContentPane().add(label_1);

textField_1 = new JTextField();

textField_1.setColumns(10);

frame.getContentPane().add(textField_1);

if(1==i)

JButton btnNewButton = new JButton("追　加");

btnNewButton.addActionListener(this);

btnNewButton.setActionCommand("追加");

JButton button_1 = new JButton("删　除");

frame.getContentPane().add(button_1);

button_1.addActionListener(this);

button_1.setActionCommand("删除");

JButton button = new JButton("查　询");

button.addActionListener(this);

button.setActionCommand("查询");

public void actionPerformed(ActionEvent e) {

String name,age,sex,query=null;

int num,age1,count=0;

num=Integer.parseInt(textField.getText());

name=textField_1.getText();

if(e.getActionCommand().equals("追加"))

query="insert into students values("+num+","+"'"+name+"',"+age1+",'"+sex+"');";

count=1;

else if(e.getActionCommand().equals("查询"))

query="select * from students where XSB="+num+";";

else if(e.getActionCommand().equals("删除"))

query="delete from students where XSB="+num+" and name="+"'"+name+"'";

String query1=null;

if(count==1)

query1="select * from students where XSB="+num+";";

rs=stmt.executeQuery(query1);

stmt.executeUpdate(query);

stmt.executeQuery(query);

query1="select * from students where XSB="+num+" and name="+"'"+name+"'";

} catch (ClassNotFoundException e1) {

e1.printStackTrace();

} catch (SQLException e1) {

finally{

//关闭资源

if(stmt!=null){

stmt.close();

// TODO: handle exception

stmt=null;

if(con!=null){

con.close();

con=null;

用java写一个登录界面的代码,哪位大神会啊,谢谢.

import?java.awt.Dimension;

import?java.awt.Toolkit;

import?java.awt.event.ActionEvent;

import?java.awt.event.ActionListener;

import?javax.swing.JButton;

import?javax.swing.JFrame;

import?javax.swing.JLabel;

import?javax.swing.JOptionPane;

import?javax.swing.JPasswordField;

import?javax.swing.JTextField;

public?static?void?main(String[]?args)?{

final?String?userName?=?"abc";

JFrame?jFrame?=?new?JFrame("登陆界面");

Dimension?dimension?=?Toolkit.getDefaultToolkit().getScreenSize();

jFrame.setResizable(false);

jFrame.setLayout(null);

jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

JLabel?label1?=?new?JLabel("姓名");

jFrame.add(label1);

final?JTextField?text1?=?new?JTextField();

jFrame.add(text1);

JButton?button?=?new?JButton("Login");

button.addActionListener(new?ActionListener()?{

public?void?actionPerformed(ActionEvent?e)?{

JOptionPane.showMessageDialog(null,?"登陆成功误",?"提示",?JOptionPane.INFORMATION_MESSAGE);

}?else?{

JOptionPane.showMessageDialog(null,?"错误",?"提示",?JOptionPane.ERROR_MESSAGE);

text1.setText("");

jFrame.add(button);

jFrame.setVisible(true);

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用java怎么实现QQ登录界面?

用java做QQ登录界面的写法如下：

package ch10;

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

①.、//定义该类继承自JFrame,实现ActionListener接口

public class LoginTest extends JFrame implements ActionListener

private JPanel jp=new JPanel();

JLabel name = new JLabel("请输入用户名");

JLabel password = new JLabel("请输入密码");

JLabel show = new JLabel("");

private JLabel[] jl={name,password,show};

JButton login = new JButton("登陆");

JButton reset = new JButton("重置");

private JButton[] jb={login,reset};

private JTextField jName=new JTextField();

private JPasswordField jPassword =new JPasswordField();

public LoginTest()

jp.setLayout(null);

jp.add(jl[i]);

jp.add(jb[i]);

jb[i].addActionListener(this);

①.0、//添加文本框到JPanel容器中

jp.add(jName);

①.1、//为文本框注册动作事件监听器

jName.addActionListener(this);

jp.add(jPassword);

jPassword.setEchoChar('$');

jPassword.addActionListener(this);

this.add(jp);

this.setTitle("登陆窗口");

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

public void actionPerformed(ActionEvent e)

if(e.getSource()==jName)

jPassword.requestFocus();

else if(e.getSource()==jb[1])

jName.setText("");

jPassword.setText("");

jName.requestFocus();

if(jName.getText().equals("lixiangguo")

public static void main(String[] args)

new LoginTest();

JAVA中GUI登录界面设计源代码是什么?

import java.awt.BorderLayout;

import java.awt.Container;

import java.awt.FlowLayout;

import javax.swing.JPasswordField;

public class Login {

private JFrame frame = new JFrame("登录");

private Container c = frame.getContentPane();

private JTextField username = new JTextField();

private JPasswordField password = new JPasswordField();

private JButton ok = new JButton("确定");

private JButton cancel = new JButton("取消");

public Login(){

c.setLayout(new BorderLayout());

initFrame();

private void initFrame() {

//顶部

JPanel titlePanel = new JPanel();

titlePanel.setLayout(new FlowLayout());

titlePanel.add(new JLabel("系统管理员登录"));

c.add(titlePanel,"North");

//中部表单

JPanel fieldPanel = new JPanel();

fieldPanel.setLayout(null);

JLabel l1 = new JLabel("用户名:");

fieldPanel.add(l1);

fieldPanel.add(username);

fieldPanel.add(password);

c.add(fieldPanel,"Center");

//底部按钮

JPanel buttonPanel = new JPanel();

buttonPanel.setLayout(new FlowLayout());

buttonPanel.add(ok);

buttonPanel.add(cancel);

c.add(buttonPanel,"South");

public static void main(String[] args){

new Login();

登陆界面的java代码怎么写?

import java.sql.*;

class LoginFrm extends JFrame implements ActionListener

JLabel lbl1=new JLabel("用户名");

JPasswordField pf=new JPasswordField();

JButton btn1=new JButton("确定");

public LoginFrm()

this.setTitle("登陆");

JPanel jp=(JPanel)this.getContentPane();

jp.add(lbl1);jp.add(txt);

btn1.addActionListener(this);

public void actionPerformed(ActionEvent ae)

if(ae.getSource()==btn1)

try

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver")；

Connection con=DriverManager.getConnection("jdbc:odbc:MyDB","","");

Statement cmd=con.createStatement();

ResultSet rs=cmd.executeQuery("select * from loginAndpassword where login='"+txt.getText()+"' and password='"+pf.getText()+"'");

JOptionPane.showMessageDialog(null,"登陆成功！");

JOptionPane.showMessageDialog(null,"用户名或密码错误！");

} catch(Exception ex){}

txt.setText("");

pf.setText("");

public static void main(String arg[])

JFrame.setDefaultLookAndFeelDecorated(true);

LoginFrm frm=new LoginFrm();

frm.setVisible(true);

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