文件名称：用户登录Java程序
文件大小：5KB
文件格式：TXT
更新时间：2012-07-05 16:24:32
Java程序 import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Text extends JFrame implements ActionListener,TextListener { private JLabel username,password,email,telephone; private JTextField usernameField,emailField; private TextField teleField; private JPasswordField passwordField; private JButton registButton,cancelButton; public Text() { super("用户注册"); Container container = getContentPane(); container.setLayout(new FlowLayout()); username = new JLabel("用户名"); username.setToolTipText("请输入用户名"); password = new JLabel("密 码"); password.setToolTipText("密码不能少于6位"); email = new JLabel("邮 箱"); email.setToolTipText("邮箱中必须包含@字符"); telephone = new JLabel("电 话"); telephone.setToolTipText("电话只能为数字"); usernameField = new JTextField(15); usernameField.addActionListener(this); passwordField = new JPasswordField(15); passwordField.addActionListener(this); emailField = new JTextField(15); emailField.addActionListener(this); teleField = new TextField(21); teleField.addActionListener(this); teleField.addTextListener(this); registButton = new JButton("注册"); cancelButton = new JButton("取消"); container.add(username); container.add(usernameField); container.add(password); container.add(passwordField); container.add(email); container.add(emailField); container.add(telephone); container.add(teleField); container.add(registButton); container.add(cancelButton); registButton.addActionListener(this); cancelButton.addActionListener(this); setSize(250,200); setVisible(true); setResizable(false); } public void textValueChanged(TextEvent event) { if (event.getSource() == teleField) { /*if (!checkNumber(teleField.getText())) { JOptionPane.showMessageDialog(this,"电话必须为数字","温馨提示",JOptionPane.INFORMATION_MESSAGE); teleField.setText(""); } */ } } public void actionPerformed(ActionEvent event) { if (event.getSource() == usernameField) { if (usernameField.getText().equals("")) { JOptionPane.showMessageDialog(null,"用户名不能为空","温馨提示",JOptionPane.INFORMATION_MESSAGE); } } if (event.getSource() == passwordField) { if (passwordField.getPassword().length == 0) { JOptionPane.showMessageDialog(this,"密码不能为空","温馨提示",JOptionPane.INFORMATION_MESSAGE); } else if (passwordField.getPassword().length < 6) { JOptionPane.showMessageDialog(this,"密码长度不能小于6位","温馨提示",JOptionPane.INFORMATION_MESSAGE); passwordField.setText(""); } } if (event.getSource() == emailField) { if (emailField.getText().indexOf("@") < 0 || emailField.getText().indexOf("@") >= (emailField.getText().length() - 1) || emailField.getText().equals("")) { JOptionPane.showMessageDialog(this,"您的邮箱格式不正确","温馨提示",JOptionPane.INFORMATION_MESSAGE); emailField.setText(""); } } if (event.getSource() == teleField) { if (teleField.getText().equals("")) { JOptionPane.showMessageDialog(this,"联系电话不能为空","温馨提示",JOptionPane.INFORMATION_MESSAGE); } else if (!checkNumber(teleField.getText())) { JOptionPane.showMessageDialog(this,"电话必须为数字","温馨提示",JOptionPane.INFORMATION_MESSAGE); teleField.setText(""); } } if (event.getSource() == registButton) { if (usernameField.getText().equals("") || passwordField.getPassword().length == 0 || emailField.getText().equals("") || teleField.getText().equals("")) { JOptionPane.showMessageDialog(this, "您填写的信息不完整","温馨提示",JOptionPane.INFORMATION_MESSAGE); usernameField.setText(""); passwordField.setText(""); emailField.setText(""); teleField.setText(""); } else if (passwordField.getPassword().length < 6) { JOptionPane.showMessageDialog(this,"密码长度不能小于6位","温馨提示",JOptionPane.INFORMATION_MESSAGE); passwordField.setText(""); } else if (emailField.getText().indexOf("@") < 0 || emailField.getText().indexOf("@") >= (emailField.getText().length() - 1)) { JOptionPane.showMessageDialog(this,"您的邮箱格式不正确","温馨提示",JOptionPane.INFORMATION_MESSAGE); emailField.setText(""); } else if (!checkNumber(teleField.getText())) { JOptionPane.showMessageDialog(this,"电话必须为数字","温馨提示",JOptionPane.INFORMATION_MESSAGE); teleField.setText(""); } else JOptionPane.showMessageDialog(this,"恭喜您,注册成功","温馨提示",JOptionPane.INFORMATION_MESSAGE); } if (event.getSource() == cancelButton) { usernameField.setText(""); passwordField.setText(""); emailField.setText(""); teleField.setText(""); } } public boolean checkNumber(String str) { for (int i=0;i