qq登录界面代码java 登录页面的代码

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

{

2、//创建JPanel对象

private JPanel jp=new JPanel();

3、//创建3个标并加入数组

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};

4、//创建登陆和重置按扭并加入数组

JButton login = new JButton("登陆");

JButton reset = new JButton("重置");

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

5、//创建文本框以及密码框

private JTextField jName=new JTextField();

private JPasswordField jPassword =new JPasswordField();

public LoginTest()

{

6、//设置布局管理器为空布局，这里自己摆放按钮、标签和文本框

jp.setLayout(null);

for(int i=0;i2;i++)

{

7、//设置标签和按扭的位置与大小

jl[i].setBounds(30,20+40*i,180,20);

jb[i].setBounds(30+110*i,100,80,20);

8、//添加标签和按扭到JPanel容器中

jp.add(jl[i]);

jp.add(jb[i]);

//为2个按钮注册动作事件监听器

jb[i].addActionListener(this);

}

9、//设置文本框的位置和大小，注意满足美观并足够用户名的长度

jName.setBounds(130,15,100,20);

10、//添加文本框到JPanel容器中

jp.add(jName);

11、//为文本框注册动作事件监听器

jName.addActionListener(this);

12、//设置密码框的位置和大小，注意满足美观和足够密码的长度

jPassword.setBounds(130,60,100,20);

13、//添加密码框到JPanel容器中

jp.add(jPassword);

14、//设置密码框中的回显字符，这里设置美元符号

jPassword.setEchoChar('$');

15、//为密码框注册动作事件监听器

jPassword.addActionListener(this);

16、//设置用于显示登陆状态的标签大小位置，并将其添加进JPanel容器

jl[2].setBounds(10,180,270,20);

jp.add(jl[2]);

17、//添加JPanel容器到窗体中

this.add(jp);

18、//设置窗体的标题、位置、大小、可见性及关闭动作

this.setTitle("登陆窗口");

this.setBounds(200,200,270,250);

this.setVisible(true);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

19、//实现动作监听器接口中的方法actionPerformed

public void actionPerformed(ActionEvent e)

{

20、//如果事件源为文本框

if(e.getSource()==jName)

{

21、//切换输入焦点到密码框

jPassword.requestFocus();

}

22、//如果事件源为重置按扭

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

{

23、//清空姓名文本框、密码框和show标签中的所有信息

jl[2].setText("");

jName.setText("");

jPassword.setText("");

24、//让输入焦点回到文本框

jName.requestFocus();

}

25、//如果事件源为登陆按钮，则判断登录名和密码是否正确

else

{

26、//判断用户名和密码是否匹配

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

String.valueOf(jPassword.getPassword()).equals("19801001"))

{

27、jl[2].setText("登陆成功，欢迎您的到来！");

}

else

{

28、jl[2].setText("对不起，您的用户名或密码错误！");

}

}

}

public static void main(String[] args)

{

29、//创建LoginTest窗体对象

new LoginTest();

}

}

相关问答

Q1: 怎么用JAVA做QQ登陆界面的密码框

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class QQLogin extends JFrame {

JTextField jtf,jtf1;

public QQLogin() {

jtf = new JTextField(12);

jtf.setText("请输入");

jtf.setForeground(Color.GRAY);// 设置颜色

JPanel jp = new JPanel();

jp.add(jtf);

jtf1 = new JTextField(12);

JPanel jp1 = new JPanel();

jp1.add(jtf1);

this.add(jp1, BorderLayout.NORTH);

this.add(jp,BorderLayout.SOUTH);

this.setTitle("密码输入提示");

this.setBounds(300, 200, 220, 160);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

//jp1.getComponents()[0].setBackground(Color.RED);

//jp1上可能添加了很多组件，于是可以使用getComponents()返回一个组件数组。

//[0]表示选取该组件数组的第一个组件

//setBackground(Color.RED) 表示把该组件变成红色的背景颜色

jtf.addFocusListener(new FocusListener() {

@Override

public void focusLost(FocusEvent e) {// 失去焦点的时候

// 如果内容为空,设置文本

if (jtf.getText().trim().equals("")) {

jtf.setText("请输入");

}

}

@Override

public void focusGained(FocusEvent e) {// 得到焦点的时候

if (jtf.getText().trim().equals("请输入")) {

jtf.setText("");// 让文本为空白

}

}

});

}

public static void main(String[] args) {

new QQLogin();

}

}

代码上已经回答了你的2个问题

Q2: 登录界面，用Java做，类似于QQ的，要求有用户名，密码，以及登录按钮，当登陆成功时，提示登陆成功！

主要代码

/**

* 登录面板

*/

import java.awt.AWTException;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Frame;

import java.awt.GridBagConstraints;

import java.awt.GridBagLayout;

import java.awt.SystemTray;

import java.awt.TrayIcon;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.io.File;

import java.io.IOException;

import java.sql.SQLException;

import javax.imageio.ImageIO;

import javax.swing.ImageIcon;

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.JTextField;

public class Login{

private TrayIcon trayIcon;//托盘图标

private SystemTray systemTray;//系统托盘

public Login() {

final JFrame myJFrame = new JFrame(" 登录");

myJFrame.setBounds(520, 200, 300, 250);

myJFrame.setLayout(new BorderLayout());

myJFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

/**

* 实现系统托盘

*/

systemTray = SystemTray.getSystemTray();//获得系统托盘的实例

try {

trayIcon = new TrayIcon(ImageIO.read(new File("o.gif")));

systemTray.add(trayIcon);//设置托盘的图标，0.gif与该类文件同一目录

}

catch (IOException e1) {e1.printStackTrace();}

catch (AWTException e2) {e2.printStackTrace();}

myJFrame.addWindowListener(

new WindowAdapter(){

public void windowIconified(WindowEvent e){

myJFrame.dispose();//窗口最小化时dispose该窗口

}

});

trayIcon.addMouseListener(

new MouseAdapter(){

public void mouseClicked(MouseEvent e){

if(e.getClickCount() == 2)//双击托盘窗口再现

{

myJFrame.setExtendedState(Frame.NORMAL);

myJFrame.setVisible(true);

}

if(e.getClickCount() == 1)

trayIcon.displayMessage("李", "", TrayIcon.MessageType.INFO);

}

public void mouseEntered(MouseEvent e){

trayIcon.displayMessage("a", "b", TrayIcon.MessageType.INFO);

}

});

//myJFrame.setIconImage(Toolkit.getDefaultToolkit().createImage(JFrame.class.getResource("images/topLogin.jpg")));

//显示图像

JLabel topLoginJLabel = new JLabel(new ImageIcon("images/topLogin.jpg"));

JPanel topJPanel = new JPanel();

topJPanel.add(topLoginJLabel);

topJPanel.setBackground(Color.black);

myJFrame.add(topJPanel, BorderLayout.NORTH);

final JPanel myJPanel = new JPanel();

myJFrame.setResizable(false);

JLabel myJLabel1 = new JLabel("用户名:");

JLabel myJLabel2 = new JLabel("密码:");

JLabel myJLabel3 = new JLabel("验证码:");

final JTextField myJTextField1 = new JTextField();

final JPasswordField myJPasswordField1 = new JPasswordField();

final JTextField myJTextField3 = new JTextField();

//按钮

JButton myJButton1 = new JButton("确认");

JButton myJButton2 = new JButton("重置");

JButton myJButton3 = new JButton("注册");

//背景色

myJPanel.setBackground(Color.getHSBColor(212, 223, 23));

//设置面板布局

GridBagLayout gridbag = new GridBagLayout();

GridBagConstraints constraints = new GridBagConstraints();

myJPanel.setLayout(gridbag);

MyLayout myLay = new MyLayout();

myLay.buildConstraints(constraints, 0, 0, 1, 1, 20, 35);

constraints.fill = GridBagConstraints.NONE;

constraints.anchor = GridBagConstraints.CENTER;

gridbag.setConstraints(myJLabel1, constraints);

myLay.buildConstraints(constraints, 1, 0, 1, 1, 80, 0);

constraints.fill = GridBagConstraints.HORIZONTAL;

gridbag.setConstraints(myJTextField1, constraints);

myLay.buildConstraints(constraints, 0, 1, 1, 1, 0, 25);

constraints.fill = GridBagConstraints.NONE;

constraints.anchor = GridBagConstraints.CENTER;

gridbag.setConstraints(myJLabel2, constraints);

myLay.buildConstraints(constraints, 1, 1, 1, 1, 0, 0);

constraints.fill = GridBagConstraints.HORIZONTAL;

gridbag.setConstraints(myJPasswordField1, constraints);

myLay.buildConstraints(constraints, 0, 2, 1, 1, 33, 25);

constraints.fill = GridBagConstraints.NONE;

constraints.anchor = GridBagConstraints.CENTER;

gridbag.setConstraints(myJLabel3, constraints);

myLay.buildConstraints(constraints, 1, 2, 1, 1, 33, 0);

constraints.fill = GridBagConstraints.HORIZONTAL;

gridbag.setConstraints(myJTextField3, constraints);

myLay.buildConstraints(constraints, 2, 2, 1, 1, 34, 0);

constraints.fill = GridBagConstraints.HORIZONTAL;

@SuppressWarnings("unused")

JudgeCode myJudgeCode = new JudgeCode();

gridbag.setConstraints(JudgeCode.judgeCodeLabel, constraints);//验证码

myLay.buildConstraints(constraints, 0, 3, 1, 1, 33, 15);

constraints.fill = GridBagConstraints.NONE;

constraints.anchor = GridBagConstraints.CENTER;

gridbag.setConstraints(myJButton1, constraints);

myLay.buildConstraints(constraints, 1, 3, 1, 1, 33, 0);

constraints.fill = GridBagConstraints.CENTER;

gridbag.setConstraints(myJButton2, constraints);

myLay.buildConstraints(constraints, 2, 3, 1, 1, 34, 0);

constraints.fill = GridBagConstraints.NONE;

gridbag.setConstraints(myJButton3, constraints);

myJPanel.add(myJLabel1);

myJPanel.add(myJTextField1);

myJPanel.add(myJLabel2);

myJPanel.add(myJPasswordField1);

myJPanel.add(myJLabel3);

myJPanel.add(myJTextField3);

myJPanel.add(JudgeCode.judgeCodeLabel);

myJPanel.add(myJButton1);

myJPanel.add(myJButton2);

myJPanel.add(myJButton3);

myJFrame.add(myJPanel, BorderLayout.CENTER);

//确认单击事件

myJButton1.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

String username = new String(myJTextField1.getText()); //用户名

String mypassword = new String(myJPasswordField1.getPassword()); //获取密码

/**

* 数据库操作

*/

DataConn dataconn = new DataConn();

String sql = "select * from user_information where name = '"+username+"'";

dataconn.executeQuery(sql);

try {

if(username == null || username == "" || mypassword == null || mypassword == "" || myJTextField3.getText() == null || myJTextField3.getText() == ""){

JOptionPane.showMessageDialog(null, "用户名、密码、验证码不能为空！请重新输入！");

}

else if(!dataconn.rs.next()){

JOptionPane.showMessageDialog(null, "你输入的用户名不存在！请重新输入！");

myJTextField1.setText("");

myJPasswordField1.setText("");

}

else if(!dataconn.rs.getString("password").equals(mypassword))

{

JOptionPane.showMessageDialog(null, "你输入的密码错误！请重新输入！");

myJPasswordField1.setText("");

}

else if(!myJTextField3.getText().equals(JudgeCode.code)){

JOptionPane.showMessageDialog(null, "你输入的验证码错误！请重新输入！");

}

else

{

JOptionPane.showMessageDialog(null, "登录成功!");

@SuppressWarnings("unused")

Index myIndex = new Index();//进入程序主界面

myJFrame.setVisible(false);

}

} catch (SQLException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

dataconn.closeStmt();

dataconn.closeConn();

}

});

//重置的单击事件

myJButton2.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

myJTextField1.setText("");

myJPasswordField1.setText("");

}

});

//注册

myJButton3.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

@SuppressWarnings("unused")

Register myRegister = new Register();

}

});

myJFrame.setVisible(true);//需要放在后面，不然得刷新才能显示页面

}

public static void main(String []args){

@SuppressWarnings("unused")

Login myLogin = new Login();

}

}

Q3: 用java能做qq界面吗

java实现简单QQ登陆界面：

1.生成界面的java代码

package QQ2014;

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class QQ2014 {

//创建登陆界面类

public void showLoginFrame(){

//创建船体对象

JFrame loginFrame=new JFrame();

//设置大小，位置，标题

loginFrame.setSize(300,200);

loginFrame.setTitle("QQ2014");

loginFrame.setLocationRelativeTo(null);

//创建流式分布对象

FlowLayout layout=new FlowLayout();

loginFrame.setLayout(layout);

//创建账户名，密码和输入框

JLabel user_name=new JLabel("账号：");

JLabel user_password=new JLabel("密码：");

JTextField field_name=new JTextField(20);

JPasswordField field_password=new JPasswordField(20);

//创建登陆，重置按钮

JButton button_reset=new JButton("重置");

JButton button_login=new JButton("登陆");

//设置窗体可见

loginFrame.setVisible(true);

//创建事件监听对象

ActionListener action_listener1=new ActionListener(){

public void actionPerformed(ActionEvent e){

String name=field_name.getText();

String password=field_password.getText();

if("zhaoxin".equals(name)"123".equals(password))

{

showIndexFrame();

loginFrame.setDefaultCloseOperation(3);

loginFrame.setVisible(false);

}

else{

System.out.println("密码错误，重新输入!");

}

}

};

ActionListener action_listener2=new ActionListener(){

public void actionPerformed(ActionEvent e){

field_name.setText("");

field_password.setText("");

}

};

//将文本输入框，按钮，事件监听对象添加

loginFrame.add(user_name);

loginFrame.add(field_name);

loginFrame.add(user_password);

loginFrame.add(field_password);

loginFrame.add(button_reset);

loginFrame.add(button_login);

button_reset.addActionListener(action_listener2);

button_login.addActionListener(action_listener1);

}

public void showIndexFrame(){

//创建窗体对象

JFrame indexFrame=new JFrame();

indexFrame.setSize(200,500);

indexFrame.setTitle("QQ好友列表");

indexFrame.setLocationRelativeTo(null);

//设置流式分布对象

FlowLayout layout=new FlowLayout(FlowLayout.CENTER,100,10);

indexFrame.setLayout(layout);

//创建好友按钮

for(int i=0;i10;i++)

{

JButton button_friend=new JButton("friend"+i);

//创建动作事件监听对象

ActionListener action_listener=new ActionListener()

{

public void actionPerformed(ActionEvent e)

{

showChatFrame();

indexFrame.setVisible(false);

indexFrame.setDefaultCloseOperation(3);

}

};

button_friend.addActionListener(action_listener);

indexFrame.add(button_friend);

}

//设置窗体可见

indexFrame.setVisible(true);

}

public void showChatFrame(){

//创建窗体，大小，位置，标题

JFrame chatFrame=new JFrame();

chatFrame.setSize(400,400);

chatFrame.setTitle("正在聊天中...");

chatFrame.setLocationRelativeTo(null);

//创建聊天记录，输入域

JTextArea area_input=new JTextArea(10,30);

JTextArea area_record=new JTextArea(5,30);

//创建流式分布对象

FlowLayout layout=new FlowLayout(FlowLayout.CENTER,0,10);

chatFrame.setLayout(layout);

//创建发送，关闭按扭

JButton button_send=new JButton("发送");

JButton button_close=new JButton("关闭");

//创建动作事件监听对象

ActionListener action_listener1=new ActionListener()

{

public void actionPerformed(ActionEvent e){

area_record.setText(area_record.getText()+"\n"+area_input.getText());

area_input.setText("");

}

};

ActionListener action_listener2=new ActionListener()

{

public void actionPerformed(ActionEvent e){

chatFrame.setVisible(false);

chatFrame.setDefaultCloseOperation(3);

}

};

//设置窗体可见

chatFrame.setVisible(true);

//添加按钮，事件监听对象

chatFrame.add(area_record);

chatFrame.add(area_input);

chatFrame.add(button_send);

chatFrame.add(button_close);

button_send.addActionListener(action_listener1);

button_close.addActionListener(action_listener2);

}

}

复制代码

2.java main方法调用

package QQ2014;

public class Test {

public static void main(String[] args){

QQ2014 qq=new QQ2014();

qq.showLoginFrame();

}

}

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