简易商品购物系统登陆界面

//包含密码框，登陆按钮

import java.awt.BorderLayout;


public class Land extends JFrame {


private JPanel contentPane;
private JTextField textField;
private JPasswordField passwordField;


/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Land frame = new Land();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}


/**
* Create the frame.
*/
public Land() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBackground(Color.WHITE);
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);

textField = new JTextField();
textField.setBackground(new Color(70, 130, 180));
textField.setFont(new Font("楷体", Font.PLAIN, 20));
textField.setHorizontalAlignment(SwingConstants.CENTER);
textField.setText("\u6B22\u8FCE\u8FDB\u5165\u8D2D\u7269\u7CFB\u7EDF");
textField.setBounds(43, 29, 348, 69);
contentPane.add(textField);
textField.setColumns(10);

JButton btnNewButton = new JButton("\u70B9\u51FB\u8FDB\u5165");
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {

//设置密码

String str = "123456";
//判断密码是否正确

if(passwordField.getText().equals(str)){

new Supermarket().setVisible(true);

}else{

passwordField.setText("");

}

}
});
btnNewButton.setBounds(137, 172, 153, 41);
contentPane.add(btnNewButton);

passwordField = new JPasswordField();
passwordField.setToolTipText("\u8BF7\u8F93\u5165\u5BC6\u7801\uFF1A");
passwordField.setHorizontalAlignment(SwingConstants.CENTER);
passwordField.setBounds(189, 127, 93, 35);
contentPane.add(passwordField);

JLabel lblNewLabel = new JLabel("\u5BC6\u7801\uFF1A");
lblNewLabel.setHorizontalAlignment(SwingConstants.CENTER);
lblNewLabel.setBounds(117, 127, 93, 35);
contentPane.add(lblNewLabel);
}
}