联合登陆的代码java 联合登录实现

JAVA 用代码实现登入QQ空间操作

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java程序模拟qq登录界面的代码

java程序如何实现登录、记住密码、自动登录等功能！

package dyno.swing.beans.qq;

import javax.swing.*;

import javax.swing.event.MouseInputListener;

import org.jvnet.substance.skin.SubstanceOfficeBlue2007LookAndFeel;

/*import org.jvnet.substance.skin.SubstanceModerateLookAndFeel;

import org.jvnet.substance.skin.SubstanceOfficeBlue2007LookAndFeel;*/

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseEvent;

import java.io.IOException;

import java.io.PrintWriter;

import java.net.Socket;

import java.net.UnknownHostException;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.util.Scanner;

public class QQLogin extends JFrame implements MouseInputListener,ActionListener{

JLabel guanggao,beijing,wenzi,shezhi,zhanghaowb,qq1,dengluzhuangtai;

// JTextField zhanghao;

JPopupMenu haoma;

JComboBox zhanghao;

JPasswordField mima;

JCheckBox jizhumima,zidongdenglu;

JButton denglu,chashamuma;

JProgressBar jpb;

SimThread activity;

Timer activityMonitor;

String name,qq;

Socket s;

public QQLogin()

{

try {

UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");

} catch (ClassNotFoundException e1) {

// TODO 自动生成 catch 块

e1.printStackTrace();

} catch (InstantiationException e1) {

// TODO 自动生成 catch 块

e1.printStackTrace();

} catch (IllegalAccessException e1) {

// TODO 自动生成 catch 块

e1.printStackTrace();

} catch (UnsupportedLookAndFeelException e1) {

// TODO 自动生成 catch 块

e1.printStackTrace();

}

chashamuma = new JButton("查杀木马");

chashamuma.setBounds(240, 155,85, 20);

this.add(chashamuma);

jpb = new JProgressBar();

jpb.setStringPainted(true);

jpb.setBounds(100, 240, 200, 15);

this.add(jpb);

chashamuma.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

jpb.setMaximum(1000);//设置进度栏的最大值

activity=new SimThread(1000);

activity.start();//启动线程

activityMonitor.start();//启动定时器

chashamuma.setEnabled(false);//禁止按钮

}

});

activityMonitor=new Timer(100,new ActionListener(){//每0.5秒执行一次

public void actionPerformed(ActionEvent e){//以下动作将在事件调度线程中运行，十分安全

int current=activity.getCurrent();//得到线程的当前进度

jpb.setValue(current);//更新进度栏的值

if(current==activity.getTarget()){//如果到达目标值

activityMonitor.stop();//终止定时器

chashamuma.setEnabled(true);//激活按钮

}

}

});

dengluzhuangtai = new JLabel(new ImageIcon("zaixianzhuangtai.jpg"));

dengluzhuangtai.setBounds(75, 145, 35, 30);

this.add(dengluzhuangtai);

dengluzhuangtai.addMouseListener(this);

denglu = new JButton("登录");

denglu.setBounds(140, 155, 80, 20);

this.add(denglu);

this.setAlwaysOnTop(true);

zidongdenglu = new JCheckBox("自动登录");

zidongdenglu.setBounds(200, 190, 100, 30);

this.add(zidongdenglu);

jizhumima = new JCheckBox("记住密码");

jizhumima.setBounds(100, 190, 100, 30);

// jizhumima.setBackground(new Color(228, 244, 255));

this.add(jizhumima);

haoma = new JPopupMenu();

/* zhanghao = new JTextField(20);

zhanghao.setBounds(120, 78, 135, 20);

zhanghao.setBorder(BorderFactory.createMatteBorder(1, 1, 1, 1, Color.WHITE));

zhanghao.setFont(new Font("宋体",Font.PLAIN,13));

this.add(zhanghao);*/

// zhanghaowb = new JLabel(new ImageIcon("2.png"));

// zhanghaowb.setBounds(90, 73, 194, 31);

// jiantou = new JLabel(new ImageIcon("baijiantou.png"));

// jiantou.setBounds(256, 78, 23, 21);

// jiantou.addMouseListener(this);

// this.add(jiantou);

// this.add(zhanghaowb);

chashamuma.addActionListener(this);

mima = new JPasswordField();

mima.setEchoChar('*');

mima.setFont(new Font("宋体",Font.PLAIN,13));

mima.setBounds(100, 113, 150, 20);

this.add(mima);

zhanghao = new JComboBox();

zhanghao.setEditable(true);

zhanghao.setBounds(100, 78, 150, 20);

zhanghao.setFont(new Font("宋体",Font.PLAIN,13));

this.add(zhanghao);

guanggao = new JLabel(new ImageIcon("guanggao.gif"));

guanggao.setBounds(0, 0, 334, 64);

beijing = new JLabel(new ImageIcon("beijing.jpg"));

beijing.setBounds(0, 64, 334, 154);

wenzi = new JLabel(new ImageIcon("wenzi.jpg"));

wenzi.setBounds(30, 75, 50, 100);

denglu.addActionListener(this);

// zhanghaowb.addMouseListener(this);

// zhanghao.addMouseListener(this);

this.add(wenzi);

this.add(beijing);

this.setLayout(null);

this.add(guanggao);

this.setVisible(true);

this.setDefaultCloseOperation(3);

this.setSize(340, 250);

this.setLocationRelativeTo(null);

}

public static void main(String[] args) {

/*JFrame.setDefaultLookAndFeelDecorated(true);

try {

UIManager.setLookAndFeel(new SubstanceOfficeBlue2007LookAndFeel()) ;

UIManager.setLookAndFeel("org.jvnet.substance.skin.SubstanceOfficeBlue2007LookAndFeel");

} catch (Exception e) {

System.out.println("Substance Raven Graphite failed to initialize");

}

SwingUtilities.invokeLater(new Runnable() {

public void run() {

QQLogin w = new QQLogin();

w.setVisible(true);

}

});*/

new QQLogin();

}

public void mouseClicked(MouseEvent e) {

// TODO 自动生成方法存根

}

public void mouseEntered(MouseEvent e) {

if(e.getSource() == dengluzhuangtai)

{

dengluzhuangtai.setIcon(new ImageIcon("zaixianzhuangtaidian.jpg"));

}

}

public void mouseExited(MouseEvent e) {

if(e.getSource() == dengluzhuangtai)

{

dengluzhuangtai.setIcon(new ImageIcon("zaixianzhuangtai.jpg"));

}

}

public void mousePressed(MouseEvent e) {

// TODO 自动生成方法存根

}

public void mouseReleased(MouseEvent e) {

// TODO 自动生成方法存根

}

public void mouseDragged(MouseEvent e) {

// TODO 自动生成方法存根

}

public void mouseMoved(MouseEvent e) {

// TODO 自动生成方法存根

}

public class liaotianchuangkou

{

}

class SimThread extends Thread{//线程类

private int current;//进度栏的当前值

private int target;//进度栏的最大值

public SimThread(int t){

current=0;

target=t;

}

public int getTarget(){

return target;

}

public int getCurrent(){

return current;

}

public void run(){//线程体

try{

while (currenttarget !interrupted()){//如果进度栏的当前值小于目标值并且线程没有被中断

sleep(10);

current++;

if(current == 700)

{

sleep(3000);

}

else if(current == 730)

{

sleep(1000);

}

}

}catch (InterruptedException e){}

}

}

public void actionPerformed(ActionEvent e) {

if(e.getSource() == chashamuma)

{

this.setBounds(300, 300, 340, 300);

}

else if(e.getSource() == denglu)

{

String zh = (String) zhanghao.getSelectedItem();

System.out.println(zhanghao.getSelectedItem());

// System.out.println(zhanghao.getItemAt(0));

char [] str = mima.getPassword();

String mima = String.valueOf(str);;

System.out.println(mima);

// Sql login = new Sql();

// if(login.login(zh,mima))

// {

try {

s = new Socket("127.0.0.1",8888);

System.out.println(s);

PrintWriter pw;

Scanner sc;

pw = new PrintWriter(s.getOutputStream(),true);

sc = new Scanner(s.getInputStream());

String str2 = "login#289872400198724#"+zh+"#289872400198724#"+mima;

System.out.println(str2);

pw.println(str2);

String str3 = sc.nextLine();

String yanzheng[] = str3.split("#");

System.out.println(str3);

if(yanzheng[0].equals("true"))

{

System.out.println("登陆成功!");

name = yanzheng[1];

qq = yanzheng[2];

// this.setVisible(false);

// Thread.sleep(5000);

System.out.println("woao"+name);

System.out.println("woai"+qq);

Logined logined = new Logined(name,qq);

this.setVisible(false);

}

else

{

JOptionPane.showMessageDialog(this, "用户名或密码错误!", "用户名或密码错误!", 0);

}

} catch (UnknownHostException e2) {

// TODO 自动生成 catch 块

e2.printStackTrace();

} catch (IOException e2) {

// TODO 自动生成 catch 块

e2.printStackTrace();

}

/*try {

login.rs = login.stat.executeQuery("select * from qquser where username='"+zh+"' and password = '"+mima+"'");

boolean flag = login.rs.next();

if(flag == true)

{

name = login.rs.getString("name");

qq = login.rs.getString("username");

}

else

{

}*/

// } catch (SQLException e1) {

// TODO 自动生成 catch 块

// e1.printStackTrace();

// }

}

else

{

JOptionPane.showMessageDialog(this, "用户名或密码错误", "输入错误", 0);

}

// this.setVisible(false);

//new Logined();

}

}

相关问答

Q1: 关于Java联合登录

联合登陆联合登陆的代码java？ 可以说一下具体联合登陆的代码java的过程吗?

Q2: 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.

*/

public static void main(String[] args) {

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.setBounds(100, 100, 450, 300);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.getContentPane().setLayout(null);

frame.setResizable(false);

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

lblNewLabel.setBounds(38, 43, 80, 34);

frame.getContentPane().add(lblNewLabel);

textField = new JTextField();

textField.setBounds(155, 42, 227, 37);

frame.getContentPane().add(textField);

textField.setColumns(10);

JLabel label = new JLabel("密　码");

label.setBounds(38, 115, 80, 34);

frame.getContentPane().add(label);

passwordField = new JPasswordField();

passwordField.setBounds(155, 115, 227, 37);

frame.getContentPane().add(passwordField);

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

btnNewButton.setBounds(60, 187, 115, 34);

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");

button.setBounds(242, 187, 115, 34);

frame.getContentPane().add(button);

button.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent arg0) {

// TODO Auto-generated method stub

textField.setText("");

passwordField.setText("");

}

});

}

}

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

package 登录;

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;

/**@author 20111024

* 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 {

private int i=0; //用户级别:0不是用户、1是管理员、2是普通用户

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;

try {

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

i=Integer.parseInt(rs.getString(3));

UsersCL UL=new UsersCL(i);

}

else

{

i=0; //没有用户是默认是0级

}

} catch (ClassNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

public int getI() {

return i;

}

}

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

package 操作处理;

import java.awt.EventQueue;

public class UsersCL implements ActionListener{

private JFrame frame;

private JTextField textField;

private JTextField textField_1;

private JTextField textField_2;

private JTextField textField_3;

private int i=0;

private JLabel label_3;

private JTextField textField_4;

public UsersCL(int i) {

this.i=i;

frame = new JFrame();

frame.setTitle("用户处理界面");

frame.setBounds(100, 100, 450, 300);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.getContentPane().setLayout(null);

frame.setResizable(false);

frame.setVisible(true);

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

lblNewLabel.setBounds(24, 32, 74, 29);

frame.getContentPane().add(lblNewLabel);

JLabel label = new JLabel("姓　名");

label.setBounds(24, 71, 74, 29);

frame.getContentPane().add(label);

JLabel label_1 = new JLabel("年　龄");

label_1.setBounds(24, 110, 74, 29);

frame.getContentPane().add(label_1);

label_3 = new JLabel("性　别");

label_3.setBounds(24, 149, 74, 29);

frame.getContentPane().add(label_3);

JLabel label_2 = new JLabel("状　态");

label_2.setBounds(24, 195, 74, 29);

frame.getContentPane().add(label_2);

textField = new JTextField();

textField.setBounds(101, 34, 113, 25);

frame.getContentPane().add(textField);

textField.setColumns(10);

textField_1 = new JTextField();

textField_1.setColumns(10);

textField_1.setBounds(101, 73, 113, 25);

frame.getContentPane().add(textField_1);

textField_2 = new JTextField();

textField_2.setColumns(10);

textField_2.setBounds(101, 112, 113, 25);

frame.getContentPane().add(textField_2);

textField_3 = new JTextField();

textField_3.setEditable(false);

textField_3.setColumns(10);

textField_3.setBounds(101, 199, 288, 25);

frame.getContentPane().add(textField_3);

textField_4 = new JTextField();

textField_4.setColumns(10);

textField_4.setBounds(101, 149, 113, 25);

frame.getContentPane().add(textField_4);

if(1==i)

{

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

btnNewButton.setBounds(276, 41, 113, 29);

frame.getContentPane().add(btnNewButton);

btnNewButton.addActionListener(this);

btnNewButton.setActionCommand("追加");

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

button_1.setBounds(276, 145, 113, 29);

frame.getContentPane().add(button_1);

button_1.addActionListener(this);

button_1.setActionCommand("删除");

}

JButton button = new JButton("查　询");

button.setBounds(276, 91, 113, 29);

frame.getContentPane().add(button);

button.addActionListener(this);

button.setActionCommand("查询");

}

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

String name,age,sex,query=null;

int num,age1,count=0;

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

name=textField_1.getText();

age1=Integer.parseInt(textField_2.getText());

sex=textField_4.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+";";

count=2;

}

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

{

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

count=3;

}

Statement stmt=null;

ResultSet rs=null;

Connection con=null;

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

String connectDB="jdbc:odbc:Students";

String query1=null;

try {

Class.forName(jdriver);

con=DriverManager.getConnection(connectDB);

stmt=con.createStatement();

if(count==1)

{

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

rs=stmt.executeQuery(query1);

if(rs.next())

textField_3.setText("已经由此记录，不能追加！");

else

{

stmt.executeUpdate(query);

textField_3.setText("已经追加完成！");

}

}

else if(2==count)

{

stmt.executeQuery(query);

rs=stmt.executeQuery(query);

if(rs.next())

{

textField_3.setText("已查找到此记录！");

}

else

{

textField_3.setText("没有此记录，可以追加！");

}

}

else if(3==count)

{

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

rs=stmt.executeQuery(query1);

if(rs.next())

{

stmt.executeUpdate(query);

textField_3.setText("已删除此记录！");

}

else

textField_3.setText("无此记录！");

}

} catch (ClassNotFoundException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

} catch (SQLException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

finally{

//关闭资源

if(stmt!=null){

try {

stmt.close();

} catch (Exception e2) {

// TODO: handle exception

}

stmt=null;

}

if(con!=null){

try {

con.close();

} catch (Exception e2) {

// TODO: handle exception

}

con=null;

}

}

}

}

Q3: 登陆界面的java代码怎么写？

概述

具体框架使用jframe，文本框组件：JTextField；密码框组件：JPasswordField；标签组件：JLabel；复选框组件：JCheckBox；单选框组件：JRadioButton；按钮组件JButton。

登录界面：

代码实例

import javax.swing.*;

import java.awt.*;   //导入必要的包

public class denglu extends JFrame{

JTextField jTextField ;//定义文本框组件

JPasswordField jPasswordField;//定义密码框组件

JLabel jLabel1,jLabel2;

JPanel jp1,jp2,jp3;

JButton jb1,jb2; //创建按钮

public denglu(){

jTextField = new JTextField(12);

jPasswordField = new JPasswordField(13);

jLabel1 = new JLabel("用户名");

jLabel2 = new JLabel("密码");

jb1 = new JButton("确认");

jb2 = new JButton("取消");

jp1 = new JPanel();

jp2 = new JPanel();

jp3 = new JPanel();

//设置布局

this.setLayout(new GridLayout(3,1));

jp1.add(jLabel1);

jp1.add(jTextField);//第一块面板添加用户名和文本框

jp2.add(jLabel2);

jp2.add(jPasswordField);//第二块面板添加密码和密码输入框

jp3.add(jb1);

jp3.add(jb2); //第三块面板添加确认和取消

//        jp3.setLayout(new FlowLayout());  //因为JPanel默认布局方式为FlowLayout，所以可以注销这段代码.

this.add(jp1);

this.add(jp2);

this.add(jp3);  //将三块面板添加到登陆框上面

//设置显示

this.setSize(300, 200);

//this.pack();

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

this.setTitle("登陆");

}

public static void main(String[] args){

new denglu();

}

}

拓展内容

java swing包

Swing 是一个为Java设计的GUI工具包。

Swing是JAVA基础类的一部分。

Swing包括了图形用户界面（GUI）器件如：文本框，按钮，分隔窗格和表。

Swing提供许多比AWT更好的屏幕显示元素。它们用纯Java写成，所以同Java本身一样可以跨平台运行，这一点不像AWT。它们是JFC的一部分。它们支持可更换的面板和主题（各种操作系统默认的特有主题），然而不是真的使用原生平台提供的设备，而是仅仅在表面上模仿它们。这意味着你可以在任意平台上使用JAVA支持的任意面板。轻量级组件的缺点则是执行速度较慢，优点就是可以在所有平台上采用统一的行为。

概念解析：

JFrame – java的GUI程序的基本思路是以JFrame为基础，它是屏幕上window的对象，能够最大化、最小化、关闭。

JPanel – Java图形用户界面(GUI)工具包swing中的面板容器类，包含在javax.swing 包中，可以进行嵌套，功能是对窗体中具有相同逻辑功能的组件进行组合，是一种轻量级容器，可以加入到JFrame窗体中。。

JLabel – JLabel 对象可以显示文本、图像或同时显示二者。可以通过设置垂直和水平对齐方式，指定标签显示区中标签内容在何处对齐。默认情况下，标签在其显示区内垂直居中对齐。默认情况下，只显示文本的标签是开始边对齐；而只显示图像的标签则水平居中对齐。

JTextField –一个轻量级组件，它允许编辑单行文本。

JPasswordField – 允许我们输入了一行字像输入框，但隐藏星号(*) 或点创建密码(密码)

JButton – JButton 类的实例。用于创建按钮类似实例中的 "Login"。

Q4: java实现简单登录界面

自己写的比较规范的代码，都有注释:

import javax.swing.JFrame;//框架

import javax.swing.JPanel;//面板

import javax.swing.JButton;//按钮

import javax.swing.JLabel;//标签

import javax.swing.JTextField;//文本框

import java.awt.Font;//字体

import java.awt.Color;//颜色

import javax.swing.JPasswordField;//密码框

import java.awt.event.ActionListener;//事件监听

import java.awt.event.ActionEvent;//事件处理

import javax.swing.JOptionPane;//消息窗口

public class UserLogIn extends JFrame{

public JPanel pnluser;

public JLabel lbluserLogIn;

public JLabel lbluserName;

public JLabel lbluserPWD;

public JTextField txtName;

public JPasswordField pwdPwd;

public JButton btnSub;

public JButton btnReset;

public UserLogIn(){

pnluser = new JPanel();

lbluserLogIn = new JLabel();

lbluserName = new JLabel();

lbluserPWD = new JLabel();

txtName = new JTextField();

pwdPwd = new JPasswordField();

btnSub = new JButton();

btnReset = new JButton();

userInit();

}

public void userInit(){

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//设置关闭框架的同时结束程序

this.setSize(300,200);//设置框架大小为长300,宽200

this.setResizable(false);//设置框架不可以改变大小

this.setTitle("用户登录");//设置框架标题

this.pnluser.setLayout(null);//设置面板布局管理

this.pnluser.setBackground(Color.cyan);//设置面板背景颜色

this.lbluserLogIn.setText("用户登录");//设置标签标题

this.lbluserLogIn.setFont(new Font("宋体",Font.BOLD | Font.ITALIC,14));//设置标签字体

this.lbluserLogIn.setForeground(Color.RED);//设置标签字体颜色

this.lbluserName.setText("用户名:");

this.lbluserPWD.setText("密 码:");

this.btnSub.setText("登录");

this.btnReset.setText("重置");

this.lbluserLogIn.setBounds(120,15,60,20);//设置标签x坐标120,y坐标15,长60,宽20

this.lbluserName.setBounds(50,55,60,20);

this.lbluserPWD.setBounds(50,85,60,25);

this.txtName.setBounds(110,55,120,20);

this.pwdPwd.setBounds(110,85,120,20);

this.btnSub.setBounds(85,120,60,20);

this.btnSub.addActionListener(new ActionListener()//匿名类实现ActionListener接口

{

public void actionPerformed(ActionEvent e){

btnsub_ActionEvent(e);

}

}

);

this.btnReset.setBounds(155,120,60,20);

this.btnReset.addActionListener(new ActionListener()//匿名类实现ActionListener接口

{

public void actionPerformed(ActionEvent e){

btnreset_ActionEvent(e);

}

}

);

this.pnluser.add(lbluserLogIn);//加载标签到面板

this.pnluser.add(lbluserName);

this.pnluser.add(lbluserPWD);

this.pnluser.add(txtName);

this.pnluser.add(pwdPwd);

this.pnluser.add(btnSub);

this.pnluser.add(btnReset);

this.add(pnluser);//加载面板到框架

this.setVisible(true);//设置框架可显

}

public void btnsub_ActionEvent(ActionEvent e){

String name = txtName.getText();

String pwd = String.valueOf(pwdPwd.getPassword());

if(name.equals("")){

JOptionPane.showMessageDialog(null,"账号不能为空","错误",JOptionPane.ERROR_MESSAGE);

return;

}else if (pwd.equals("")){

JOptionPane.showMessageDialog(null,"密码不能为空","错误",JOptionPane.ERROR_MESSAGE);

return;

}else if(true){

this.dispose();

}else{

JOptionPane.showMessageDialog(null,"账号或密码错误","错误",JOptionPane.ERROR_MESSAGE);

return;

}

}

public void btnreset_ActionEvent(ActionEvent e){

txtName.setText("");

pwdPwd.setText("");

}

public static void main(String[] args){

new UserLogIn();

}

}

Q5: JAVA登录界面如何与JAVA其他程序连接起来

java里边都是对象你把这两个程序的源码按照包的方式分别放好。把写字板main()函数里边的代码copy到登陆界面的登陆成功的地方就可以了。或者你把代码发过来给你改。

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