登陸界面的java代碼怎么寫？

import java.awt.*; \x0d\x0aimport javax.swing.*; \x0d\x0aimport java.awt.event.*; \x0d\x0aimport java.sql.*; \x0d\x0a\x0d\x0aclass LoginFrm extends JFrame implements ActionListener \x0d\x0a{ \x0d\x0aJLabel lbl1=new JLabel("用前段改戶名"); \x0d\x0aJLabel lbl2=new JLabel("密碼"); \x0d\x0aJTextField txt=new JTextField(15); \x0d\x0aJPasswordField pf=new JPasswordField(); \x0d\x0aJButton btn1=new JButton("確定燃姿"); \x0d\x0aJButton btn2=new JButton("取消"); \x0d\x0a\x0d\x0apublic LoginFrm() \x0d\x0a{ \x0d\x0athis.setTitle("登陸"); \x0d\x0aJPanel jp=(JPanel)this.getContentPane(); \x0d\x0ajp.setLayout(new GridLayout(3,2,10,10)); \x0d\x0ajp.add(lbl1);jp.add(txt); \x0d\x0ajp.add(lbl2);jp.add(pf); \x0d\x0ajp.add(btn1);jp.add(btn2); \x0d\x0abtn1.addActionListener(this); \x0d\x0abtn2.addActionListener(this); \x0d\x0a} \x0d\x0a\x0d\x0apublic void actionPerformed(ActionEvent ae) \x0d\x0a{ \x0d\x0aif(ae.getSource()==btn1) \x0d\x0a{ \x0d\x0atry \x0d\x0a{ \x0d\x0aClass.forName("sun.jdbc.odbc.JdbcOdbcDriver")； \x0d\x0aConnection con=DriverManager.getConnection("jdbc:odbc:MyDB","",""); \x0d\x0aStatement cmd=con.createStatement(); \x0d\x0aResultSet rs=cmd.executeQuery("select * from loginAndpassword where login='"+txt.getText()+"' and password='"+pf.getText()+"'"); \x0d\x0aif(rs.next()) \x0d\x0a{ \x0d\x0aJOptionPane.showMessageDialog(null,"登陸成功！"); \x0d\x0a} \x0d\x0aelse \x0d\x0aJOptionPane.showMessageDialog(null,"用戶名或密碼錯誤慧判！"); \x0d\x0a} catch(Exception ex){} \x0d\x0a\x0d\x0aif(ae.getSource()==btn2) \x0d\x0a{ \x0d\x0atxt.setText(""); \x0d\x0apf.setText(""); \x0d\x0a} \x0d\x0a} \x0d\x0a} \x0d\x0a\x0d\x0apublic static void main(String arg[]) \x0d\x0a{ \x0d\x0aJFrame.setDefaultLookAndFeelDecorated(true); \x0d\x0aLoginFrm frm=new LoginFrm(); \x0d\x0afrm.setSize(400,200); \x0d\x0afrm.setVisible(true); \x0d\x0a} \x0d\x0a}

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java登陸界面驗證

以下代碼就是了。

詳細參照附件

import?java.awt.GridLayout;

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.JPanel;

import?javax.swing.JPasswordField;

import?javax.swing.JTextField;

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

private?JTextField?text_username;

private?JPasswordField?password_pwd;

private?JButton?button_lg,?button_close;

private?JLabel?msgArea;

public?LoginJFrame()?{

super("登錄");

this.setBounds(500,?240,?320,?260);

setResizable(false);

setBackground(java.awt.Color.lightGray);

setDefaultCloseOperation(EXIT_ON_CLOSE);

getContentPane().setLayout(new?GridLayout(4,?1,?20,?10));

getContentPane().add(new?JLabel("在線考試系統(tǒng)用戶登錄",?JLabel.CENTER));

JPanel?panel_1?=?new?JPanel(new?GridLayout(2,?2,?0,?5));

getContentPane().add(panel_1);

panel_1.add(new?JLabel("用戶名：",?JLabel.CENTER));

text_username?=?new?JTextField(20);

panel_1.add(text_username);

panel_1.add(new?JLabel("密??亮巧??碼：",?JLabel.CENTER));

password_pwd?=?new?JPasswordField(20);

panel_1.add(password_pwd);

JPanel?panel_2?=?new?JPanel(new?GridLayout(1,?2,?30,?0));

getContentPane().add(panel_2);

button_lg?=?new?JButton("登陸");

panel_2.add(button_lg);

button_lg.addActionListener(this);

button_close?=?new?JButton("注冊");

panel_2.add(button_close);

setVisible(true);

//?添加一個控件用于顯示提示信息

JPanel?panel_3?=?new?JPanel();

msgArea?=?new?JLabel();

getContentPane().add(panel_3.add(msgArea));

setVisible(true);

}

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

new?LoginJFrame();

}

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

//?登錄按鈕

if?(e.getSource()?==?button_lg)?{

if?(text_username.getText().isEmpty()??password_pwd.getText().isEmpty())?{

msgArea.setText("請輸入用戶名和密碼悄伍!");

return;

}

if?(text_username.getText().isEmpty())?{

敬運鍵?????????????msgArea.setText("用戶名不能為空!");

return;

}

if?(password_pwd.getText().isEmpty())?{

msgArea.setText("密碼不能為空!");

return;

}

//?TODO?連接數(shù)據(jù)庫驗證用戶

}

}

}

求JAVA實現(xiàn)用戶登錄界面代碼？

你要先學(xué)會截圖哦,你發(fā)的看不清楚,重新寫了一個你參考參考!

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("注冊賬讓罩戶");

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="卡片類型1,卡片類型2,卡片類型3,卡片類型4,卡片類型5";

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

labelId=new JLabel("賬號: ");

labelName=new JLabel("姓名: ");

labelPass=new JLabel("帆滑稿密碼: ");

labelMoney=new JLabel("開戶金額:");

labelSelect=new JLabel("存款類型:");

labelCar=new JLabel("卡片類型:");

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("活態(tài)孝期",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("確定"));

jp7.add(new JButton("取消"));

}

public static void main(String[] args) {

new Day30A();

}

}

用java寫一個登錄界面的代碼，哪位大神會啊，謝謝。

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?class?Test26?{

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

final?String?userName?=?"abc"喚鏈或;

final?String?passwrod?=?"123";

JFrame?jFrame?=?new?JFrame("登陸界面");

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

jFrame.setBounds(((int)dimension.getWidth()?-?200)?/?2,?((int)dimension.getHeight()?-?300)?/?2,?200,?150);

jFrame.setResizable(false);

jFrame.setLayout(null);

jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

JLabel?label1?=?new?JLabel("姓名");

label1.setBounds(10,?10,?100,?30);

jFrame.add(label1);

JLabel?label2?=?new?JLabel("密碼");

label2.setBounds(10,?40,?100,?30);

jFrame.add(label2);

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

text1.setBounds(50,?15,?130,?20);

jFrame.add(text1);

final?JPasswordField?text2?=?new?JPasswordField();

text2.setBounds(50,?45,?130,?20);

jFrame.add(text2);

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

button.setBounds(10,?75,?170,?40);

button.addActionListener(new?ActionListener()?{

@Override

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

if(userName.equals(text1.getText())??passwrod.equals(text2.getText()))?{

JOptionPane.showMessageDialog(null,?"登陸成功誤",?"提示",?JOptionPane.INFORMATION_MESSAGE);

}?else?{

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

text1.setText("");

text2.setText("");

}

}

});

jFrame.add(button);

jFrame.setVisible(true);

}

}

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