用Java編寫用戶注冊界面，包含：用戶名、密碼、密碼確認、郵箱，以及注冊和清空兩個按鈕。求高手，感謝!

界面建議用可視化來做，美觀且便捷。下面這個是完全用代碼寫的，僅供參考。

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import javax.swing.*;

import java.awt.event.*;

import java.awt.*;

import java.sql.*;

public class Register extends JFrame {

JLabel jl1 = new JLabel("用戶名");

JTextField jt1 = new JTextField();

JLabel jl2 = new JLabel("郵箱");

JTextField jt2 = new JTextField();

JLabel jl3 = new JLabel("密碼");

JPasswordField jpw1 = new JPasswordField();

JLabel jl4 = new JLabel("密碼確認");

JPasswordField jpw2 = new JPasswordField();

JButton register = new JButton("注冊");

JButton clean = new JButton("清空");

public Register(){

setLayout(new GridLayout(5,2));

add(jl1);

add(jt1);

add(jl2);

add(jt2);

add(jl3);

add(jpw1);

add(jl4);

add(jpw2);

add(register);

add(clean);

String name = jt1.getText();

String email = jt2.getText();

String pw = jpw1.getText();

register.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

try{

Class.forName("com.mysql.jdbc.Driver");

Connection con = DriverManager.getConnection("jdbc:mysql://localhost/db","root","");

Statement sta = con.createStatement();

sta.executeUpdate("INSERT INTO register VALUES(name,email,pw)");

JOptionPane.showMessageDialog(null,"注冊成功","提示",JOptionPane.INFORMATION_MESSAGE);

}

catch(Exception ex){

ex.getStackTrace();

}

}

});

clean.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

jt1.setText("");

jt2.setText("");

jpw1.setText("");

jpw2.setText("");

}

});

}

public static void main(String[] args){

Register frame = new Register();

frame.setTitle("用戶注冊");

frame.setLocationRelativeTo(null);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setSize(400,400);

frame.setVisible(true);

}

}

求解：用Java寫一段程序，能實現(xiàn)注冊用戶的，包含用戶名和密碼，郵箱的GUI程序。

import java.awt.*;

import java.awt.event.*;

import java.io.*;

import javax.swing.*;

public class TestLogin implements ActionListener {

JTextField jtf1 = new JTextField(15);

JPasswordField jtf2 = new JPasswordField(15);

JTextField jtf3 = new JTextField(15);

JLabel jl0 = new JLabel("歡迎注冊！");

String result = "";

@Override

public void actionPerformed(ActionEvent e) {

String comn = e.getActionCommand();

if ("提交".equals(comn)) {

FileInputStream fis;

try {

fis = new FileInputStream("D:\\Program File\\image\\input.txt");

byte[] b = new byte[1024];

while (true) {

int num = fis.read(b);

if (num == -1)

break;

result = result + new String(b, 0, num);

}

fis.close();

} catch (FileNotFoundException e1) {

e1.printStackTrace();

} catch (IOException ioe) {

ioe.printStackTrace();

}

String[] s = result.split(";", 0);

String name = jtf1.getText();

String password = jtf2.getText();

String email = jtf3.getText();

String temp = name + "," + password + "," + email + ";";

boolean flag = true;

for (int i = 0; i s.length; i++) {

String[] name0 = s[i].split(",", 0);

if (name.equals(name0[0])) {

jl0.setText("你輸入的用戶名重復啦！請重新輸入");

flag = false;

jtf1.setText("");

jtf2.setText("");

jtf3.setText("");

jtf1.requestFocus();

break;

}

}

if (flag) {

try {

FileOutputStream fos = new FileOutputStream(

"D:\\Program File\\image\\input.txt", true);

fos.write(temp.getBytes());

fos.close();

jl0.setText("恭喜你！注冊成功！");

jtf1.setText("");

jtf2.setText("");

jtf3.setText("");

jtf1.requestFocus();

} catch (Exception ae) {

ae.printStackTrace();

}

}

} else if ("清空".equals(comn)) {

jtf1.setText("");

jtf2.setText("");

jtf3.setText("");

jtf1.requestFocus();

}

}

public TestLogin() {

JFrame jf = new JFrame("登錄界面");

GridLayout gl = new GridLayout(5, 1);

jf.setLayout(gl);

JPanel[] jp = new JPanel[5];

for (int i = 0; i jp.length; i++) {

jp[i] = new JPanel();

jf.add(jp[i]);

}

jp[0].add(jl0);

JLabel jl1 = new JLabel("用戶名：");

jp[1].add(jl1);

jp[1].add(jtf1);

JLabel jl2 = new JLabel(" 密碼： ");

jp[2].add(jl2);

jp[2].add(jtf2);

JLabel jl3 = new JLabel(" Email：");

jp[3].add(jl3);

jp[3].add(jtf3);

JButton jb1 = new JButton("提交");

jp[4].add(jb1);

jb1.addActionListener(this);

JButton jb2 = new JButton("清空");

jp[4].add(jb2);

jb2.addActionListener(this);

jf.setLocation(300, 200);

jf.pack();

jf.setVisible(true);

jf.setDefaultCloseOperation(jf.EXIT_ON_CLOSE);

}

public static void main(String[] args) {

new TestLogin();

}

}

這個應該就是你想要的答案！

用java設計一個注冊界面，要求將注冊信息利用輸出流保存到本地txt文件

效果圖

參考代碼和注釋

import?java.awt.*;

import?java.awt.event.*;

import?java.io.*;

import?javax.swing.*;

//該窗口繼承自JFrame,?實現(xiàn)了ActionListener接口

public?class?SingUpFrame?extends?JFrame?implements?ActionListener?{

//定義需要的組件

JTextField?jtfName,?jtfEmail;?

JPasswordField?jpf;

JRadioButton?jrb1,?jrb2;

JComboBoxString?jcb;

JButton?jbReset,?jbSingUp;

//常量

static?final?String?NEW_LINE?=?System.getProperty("line.separator");//?獲取系統(tǒng)的換行符

static?final?String?FILE_PATH?=?"d:/users.txt";//指定文件的路徑

//構(gòu)造器

public?SingUpFrame()?{

JPanel?jp1?=?new?JPanel();

JLabel?jl1?=?new?JLabel("賬號");

jtfName?=?new?JTextField(15);

jp1.add(jl1);

jp1.add(jtfName);

JPanel?jp2?=?new?JPanel();

JLabel?jl2?=?new?JLabel("密碼");

jpf?=?new?JPasswordField(15);

jp2.add(jl2);

jp2.add(jpf);

JPanel?jp3?=?new?JPanel();

JLabel?jl3?=?new?JLabel("郵箱");

jtfEmail?=?new?JTextField(15);

jp3.add(jl3);

jp3.add(jtfEmail);

JPanel?jp4?=?new?JPanel();

JLabel?jl4?=?new?JLabel("性別");

ButtonGroup?bg?=?new?ButtonGroup();

jrb1?=?new?JRadioButton("男");

jrb1.setSelected(true);//?默認選中男性

jrb2?=?new?JRadioButton("女");

bg.add(jrb1);

bg.add(jrb2);

jp4.add(jl4);

jp4.add(jrb1);

jp4.add(jrb2);

JLabel?jl5?=?new?JLabel("年齡");

String[]?ary?=?new?String[12];

for?(int?i?=?18;?i??30;?i++)?{//?18~30可供選中的范圍

ary[i?-?18]?=?i?+?"";

}

jcb?=?new?JComboBoxString(ary);

jp4.add(jl5);

jp4.add(jcb);

JPanel?jpc?=?new?JPanel(new?GridLayout(4,?1));//?4行1列布局

jpc.add(jp1);

jpc.add(jp2);

jpc.add(jp3);

jpc.add(jp4);

add(jpc);

JPanel?jps?=?new?JPanel();

jbReset?=?new?JButton("重填");

jbReset.addActionListener(this);//給按鈕添加響應

jbSingUp?=?new?JButton("確定");

jbSingUp.addActionListener(this);//給按鈕添加響應

jps.add(jbReset);

jps.add(jbSingUp);

add(jps,?BorderLayout.SOUTH);

setTitle("注冊窗口");//?窗口標題

setSize(300,?285);//?窗口大小

setLocationRelativeTo(null);//?窗口居中

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//?當窗口關閉時,程序結(jié)束

}

@Override

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

JButton?jb?=?(JButton)?e.getSource();

if?(jb?==?jbReset)?{

jtfName.setText("");

jpf.setText("");

jtfEmail.setText("");

jrb1.setSelected(true);

jcb.setSelectedIndex(0);//?選中第1個選項(18)

}?else?if?(jb?==?jbSingUp)?{

String?name?=?jtfName.getText().trim();

String?pswd?=?new?String(jpf.getPassword());

String?email?=?jtfEmail.getText().trim();

String?xb?=?jrb1.isSelected()???"男"?:?"女";

String?age?=?(String)?jcb.getSelectedItem();

if(name.equals("")||pswd.equals("")||email.equals(""))?{//對輸入的信息進行一個簡單的判斷

JOptionPane.showMessageDialog(null,?"請完整填寫所有的信息",?"提示",JOptionPane.WARNING_MESSAGE);??

return;

}

StringBuffer?sb?=?new?StringBuffer();

sb.append("賬號:"?+?name?+?NEW_LINE?+?"密碼:"?+?pswd?+?NEW_LINE?+?"郵箱:"?+?email?+?NEW_LINE?+?"性別:"?+?xb

+?NEW_LINE?+?"年齡:"?+?age+NEW_LINE);

boolean?flag?=?saveInfo(sb.toString());

if(flag)?{

JOptionPane.showMessageDialog(null,?"注冊成功?,保存成功");

}else?{

JOptionPane.showMessageDialog(null,?"Sorry!保存失敗.注冊出現(xiàn)了問題...",?"IO錯誤",JOptionPane.ERROR_MESSAGE);

}

}

}

//方法:保存信息到文件

public?boolean?saveInfo(String?info)?{

FileWriter?fw;

try?{

fw?=?new?FileWriter(FILE_PATH,?true);//追加文字到文件尾部

fw.write(info);

fw.close();

}?catch?(IOException?e)?{

e.printStackTrace();

return?false;//IO異常,保存不成功

}

return?true;//保存成功

}

//main方法

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

new?SingUpFrame().setVisible(true);?//創(chuàng)建窗口并可見

}

}