Java课程设计---实现登录(1)
1、新建登录窗口类:LoginView.java
以下是自动生成的代码
package com.system.view; import java.awt.BorderLayout; import java.awt.EventQueue; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.border.EmptyBorder; /* * 项目名称: * * 文件名称为:LoginView.java * 文件创建人:daxiang * @author daxiang * @version * @time 2018年6月11日 下午8:09:51 * @copyright daxiang */ public class LoginView extends JFrame { private static final long serialVersionUID = -8428252014482273530L; private JPanel contentPane; /** * Launch the application. */ public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { try { LoginView frame = new LoginView(); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } /** * Create the frame. */ public LoginView() { setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBounds(100, 100, 450, 300); contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); contentPane.setLayout(new BorderLayout(0, 0)); setContentPane(contentPane); } }
2、通过可视化工具制作登录界面
界面完整代码(由于是生成的,仅供参考)
package com.demo.view; import java.awt.BorderLayout; import java.awt.EventQueue; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.border.EmptyBorder; import javax.swing.JLabel; import javax.swing.JTextField; import javax.swing.JPasswordField; import javax.swing.JButton; /* * 项目名称: * * 文件名称为:LoginView.java * 文件创建人:daxiang * * @author daxiang * @version * @time 2018年6月13日 下午7:58:47 * @copyright daxiang */ public class LoginView 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 { LoginView frame = new LoginView(); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } /** * Create the frame. */ public LoginView() { setTitle("系统登录窗口"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBounds(100, 100, 450, 300); contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); setContentPane(contentPane); contentPane.setLayout(null); JLabel label = new JLabel("登录名"); label.setBounds(50, 52, 72, 18); contentPane.add(label); JLabel label_1 = new JLabel("密 码"); label_1.setBounds(50, 111, 72, 18); contentPane.add(label_1); textField = new JTextField(); textField.setBounds(135, 49, 199, 24); contentPane.add(textField); textField.setColumns(10); passwordField = new JPasswordField(); passwordField.setBounds(136, 108, 198, 24); contentPane.add(passwordField); JButton button = new JButton("确 认"); button.setBounds(50, 187, 113, 27); contentPane.add(button); JButton button_1 = new JButton("取 消"); button_1.setBounds(221, 187, 113, 27); contentPane.add(button_1); } }
3、对相应组件添加操作
(1)获取用户名和密码
说明:双击组件即可添加监听
“确定”按钮监听部分代码
button.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { System.out.println("输入的用户名"+textField.getText()); System.out.println("输入的密码"+new String(passwordField.getPassword())); } });
(2)对取消按钮添加操作
“取消”按钮监听部分代码
button_1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { textField.setText(""); passwordField.setText(""); } });
效果