java登录注册代码下载,java账号注册

求一个java注册登录的完整代码

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求一个java注册登录的完整代码

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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;

public class Day30A extends JFrame {

private static final long serialVersionUID = 1L;

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

private JComboBoxString jcb;

private JPanel jp1,jp2,jp3,jp4,jp5,jp6,jp7;

private ButtonGroup btg;

private JRadioButton jr1,jr2;

Day30A(){

this.setTitle("注册账户");

this.setLayout(new GridLayout(7,1));

this.setSize(300,280);

this.setLocationRelativeTo(null);

this.setDefaultCloseOperation(EXIT_ON_CLOSE);

init();

this.setVisible(true);

}

private void init() {

String str="卡片类型1,卡片类型2,卡片类型3,卡片类型4,卡片类型5";

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();

addFun2();

}

private void addFun2() {

this.add(jp1);

this.add(jp2);

this.add(jp3);

this.add(jp4);

this.add(jp5);

this.add(jp6);

this.add(jp7);

}

private void addFun1() {

jp1=new JPanel();

jp1.add(labelId);

jp1.add(new JTextField(15));

jp2=new JPanel();

jp2.add(labelName);

jp2.add(new JTextField(15));

jp3=new JPanel();

jp3.add(labelPass);

jp3.add(new JTextField(15));

jp4=new JPanel();

jp4.add(labelMoney);

jp4.add(new JTextField(13));

jp5=new JPanel();

jp5.add(labelSelect);

btg=new ButtonGroup();

jr1=new JRadioButton("定期");

jr2=new JRadioButton("活期",true);

btg.add(jr1);

btg.add(jr2);

jp5.add(jr1);

jp5.add(jr2);

jp6=new JPanel();

jp6.add(labelCar);

jp6.add(jcb);

jp7=new JPanel();

jp7.add(new JButton("确定"));

jp7.add(new JButton("取消"));

}

public static void main(String[] args) {

new Day30A();

}

}

求Java 注册登录 连接到数据库的源代码。

package cc.icoc.javaxu.dao;import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;public class MySQLOprea { /** * 增加记录 INSERT INTO 表名(字段名，字段名) VALUES (值，值)； * 删除记录 DELETE FROM 表名 WHERE 条件() * 修改记录 UPDATE 表名 SET 字段=值，字段=值 WHERE 条件 * 查询记录 SELECT 字段，字段 FROM 表名 WHERE 条件 */ ResultSet rs = null; Connection conn = null; Statement statement = null; //链接 public Connection connSQL() { String DRIVER = "com.mysql.jdbc.Driver";// 数据库驱动 String URL = "jdbc:mysql://localhost:3306/mydata?useUnicode=truecharacterEncoding=gb2312";// String DBNAME = "root";// 用户名 String DBPASS = "341341";// 密码 try { Class.forName(DRIVER).newInstance();// 注册驱动 conn = DriverManager.getConnection(URL, DBNAME, DBPASS); statement = conn.createStatement(); } catch (Exception e) {} return conn; } //增 /** * 插入新记录的操作 * @param table 表名 * @param userName 插入的用户名 * @param passWord 插入的用户密码 * @return true代表插入成功，false代表插入失败 */ public String insert(String table, String userName, String passWord) { connSQL(); String s = "注册成功"; try { String insert = "insert into "+table+"(userName,passWord) values ("+"'"+userName+"'"+","+"'"+passWord+"'"+")"; statement.executeUpdate(insert); closeDB(); } catch (Exception e) { // TODO: handle exception s = "注册失败"+e.toString(); } return s; } //删 public void delete(String table, String whereValue) throws SQLException { String delete = "Delete from "+table+" where userName = "+whereValue; statement.executeUpdate(delete); } //改 public void update(String table, String whereValue , String newValue) throws SQLException { String update = "Update "+table+" set passWord ="+newValue+" where userName ="+whereValue; statement.executeUpdate(update); } //查 public String query(String table , String whereValue1 ,String whereValue2, String whatCol1, String whatCol2) throws SQLException { connSQL(); String query = null;// ResultSet set= null; try { query = "select "+whatCol1+","+whatCol2+" from "+table +" where "+whatCol1+"="+'"'+whereValue1+'"'+" and "+whatCol2+"="+'"'+whereValue2+'"'; rs = statement.executeQuery(query); closeDB(); } catch (Exception e) { // TODO: handle exception return "false exception:"+e.toString(); } if(rs.next()) { return "true:"; } return "false:"; } private void closeDB() { // TODO Auto-generated method stub try { if(rs != null) { rs.close(); } if(statement != null) { statement.close(); } if(conn != null) { conn.close(); } } catch (Exception e) { // TODO: handle exception System.out.println("数据库关闭时出现异常"); } }}

java编写一个登陆和注册信息的源代码,最简单的就可以,不需要数据库的那种

你这个不用数据库真的是有点难搞

我写了个用集合存储的，你看看，能否帮上你

java.util.ListString list = new ArrayListString();

list.add("qq=123");//存储的时候用（用户名=密码）的形式

list.add("ww=456");

String username = "qq";

String password = "123";

for (int i = 0; i  list.size(); i++) {

String num = username +"="+password;

if(num.equals(list.get(i))){

System.out.println("登录成功");

break;

}

}

java登录验证源代码

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class Test_Login extends javax.swing.JFrame {

private JPanel jPanel1;

private JButton bntLogin;

private JButton bntCannel;

private JPasswordField pwd;

private JTextField username;

private JLabel jLabel2;

private JLabel jLabel1;

public static void main(String[] args) {

Test_Login inst = new Test_Login();

inst.setLocationRelativeTo(null);

inst.setVisible(true);

}

public Test_Login() {

super();

initGUI();

}

private void initGUI() {

try {

setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);

{

jPanel1 = new JPanel();

getContentPane().add(jPanel1, BorderLayout.CENTER);

jPanel1.setLayout(null);

{

jLabel1 = new JLabel();

jPanel1.add(jLabel1);

jLabel1.setText("用户名");

jLabel1.setBounds(45, 30, 75, 25);

}

{

jLabel2 = new JLabel();

jPanel1.add(jLabel2);

jLabel2.setText("密码");

jLabel2.setBounds(45, 75, 55, 15);

}

{

username = new JTextField();

jPanel1.add(username);

username.setBounds(100, 30, 140, 25);

}

{

pwd = new JPasswordField();

jPanel1.add(pwd);

pwd.setBounds(100, 70, 140, 25);

}

{

bntLogin = new JButton();

jPanel1.add(bntLogin);

bntLogin.setText("登陆");

bntLogin.setBounds(40, 120, 60, 30);

bntLogin.addMouseListener(new MouseAdapter() {

public void mouseClicked(MouseEvent e) {

if (username.getText().equals("lisong")

pwd.getText().equals("lisong")) {

JOptionPane.showMessageDialog(Test_Login.this,

"登录成功");

} else {

JOptionPane.showMessageDialog(Test_Login.this,

"登录失败");

}

}

});

bntCannel = new JButton();

jPanel1.add(bntCannel);

bntCannel.setText("取消");

bntCannel.setBounds(180, 120, 60, 30);

bntCannel.addMouseListener(new MouseAdapter() {

public void mouseClicked(MouseEvent e) {

System.exit(0);

}

});

}

}

pack();

setSize(300, 215);

} catch (Exception e) {

e.printStackTrace();

}

}

}