package cn.hdu.edu;
import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.ButtonGroup;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
import javax.swing.JPasswordField;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.Color;
import java.sql.*;public class Login extends JFrame { private JPanel contentPane;
private JTextField textField;
private JPasswordField passwordField;
/**
* Create the frame.
*/
public Login() {
setTitle("\u97F3\u50CF\u7BA1\u7406\u4FE1\u606F\u7CFB\u7EDF");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 480, 320);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);
JPanel panel = new JPanel();
panel.setBackground(Color.CYAN);
contentPane.add(panel, BorderLayout.CENTER);
panel.setLayout(null);
JLabel label = new JLabel("\u767B\u5F55");
label.setBounds(200, 5, 44, 15);
panel.add(label);
ButtonGroup bgp = new ButtonGroup();
final JRadioButton rdbtnNewRadioButton = new JRadioButton("\u5458\u5DE5");
rdbtnNewRadioButton.setBackground(Color.CYAN);
rdbtnNewRadioButton.setBounds(145, 54, 58, 23);
panel.add(rdbtnNewRadioButton);
JRadioButton radioButton = new JRadioButton("\u5BA2\u6237");
radioButton.setBackground(Color.CYAN);
radioButton.setBounds(241, 54, 58, 23);
panel.add(radioButton);
bgp.add(radioButton);
bgp.add(rdbtnNewRadioButton);
JLabel label_1 = new JLabel("\u7528\u6237\u540D");
label_1.setBounds(136, 106, 54, 15);
panel.add(label_1);
textField = new JTextField();
textField.setBounds(189, 103, 170, 21);
panel.add(textField);
textField.setColumns(10);
JLabel label_2 = new JLabel("\u5BC6\u7801");
label_2.setBounds(136, 152, 39, 15);
panel.add(label_2);
passwordField = new JPasswordField();
passwordField.setBounds(189, 149, 170, 21);
panel.add(passwordField);
JButton btnNewButton = new JButton("\u767B\u5F55");
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if(rdbtnNewRadioButton.isSelected()){
if (textField.toString().equals("")){
JOptionPane.showMessageDialog(null, "请输入用户名", "温馨提示", JOptionPane.INFORMATION_MESSAGE);
}
else if (passwordField.toString().equals("")){
JOptionPane.showMessageDialog(null, "请输入密码", "温馨提示", JOptionPane.INFORMATION_MESSAGE);
}
}
else{
dispose();
new KehuFrame().setVisible(true);
}
}
});
btnNewButton.setBounds(110, 201, 93, 23);
panel.add(btnNewButton);
JButton button = new JButton("\u53D6\u6D88");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
dispose();
}
});
button.setBounds(241, 201, 93, 23);
panel.add(button);
}
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Login frame = new Login();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}}
求增加用户名密码验证功能
解决方案 »
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