JAVA图形界面设计（GUI）学生成绩管理系统实战练习之登陆界面

学生成绩管理系统实战练习之登陆界面

开发软件：eclips

使用插件：windowsbuilder

代码风格：Swing

源码如下

package UI;import UI.MySystemUI;import java.awt.EventQueue;import javax.swing.ImageIcon;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.JLabel;import javax.swing.JOptionPane;import javax.swing.border.LineBorder;import java.awt.Color;import java.awt.event.MouseEvent;import java.awt.event.MouseListener;import java.awt.Font;import javax.swing.JPasswordField;import javax.swing.JFormattedTextField;import java.awt.Button;import java.awt.event.ActionListener;import java.awt.event.ActionEvent;publicclassLoginextendsJFrame{/**
     * 
     */privatestaticfinallong serialVersionUID =1L;private JPanel LoginPanel;private JPasswordField passwordField;/**
     * Launch the application.
     */publicstaticvoidmain(String[] args){
        EventQueue.invokeLater(newRunnable(){publicvoidrun(){try{
                    Login frame =newLogin();
                    frame.setVisible(true);}catch(Exception e){
                    e.printStackTrace();}}});}/**
     * Create the frame.
     */publicLogin(){/**
         * 创建并设置登陆界面主面板
         */setTitle("学生成绩管理系统登陆界面（1.0）");setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setBounds(100,100,485,343);setResizable(false);//禁止最大化setLocationRelativeTo(null);//居中/**
         * 创建主布局Panel
         */
        LoginPanel =newJPanel();
        LoginPanel.setBorder(newLineBorder(newColor(0,0,0)));setContentPane(LoginPanel);
        LoginPanel.setLayout(null);/**
         * 添加背景图片到JLabel中
         */
        ImageIcon backimg;
        backimg=newImageIcon("E:\\JavaECode\\GUIofManagementSystem\\src\\Picture\\Back.jpg");/**
         * 创建一个账号标签
         */
        JLabel IDLabel =newJLabel("账  号：");
        IDLabel.setFont(newFont("新宋体", Font.BOLD,20));
        IDLabel.setForeground(Color.LIGHT_GRAY);
        IDLabel.setBounds(49,170,91,38);
        IDLabel.setOpaque(false);
        LoginPanel.add(IDLabel);/**
         * 创建一个密码标签
         */
        JLabel PasswordLabel =newJLabel("密  码：");
        PasswordLabel.setOpaque(false);
        PasswordLabel.setForeground(Color.LIGHT_GRAY);
        PasswordLabel.setFont(newFont("新宋体", Font.BOLD,20));
        PasswordLabel.setBounds(49,221,91,38);
        LoginPanel.add(PasswordLabel);/**
         * 登陆文本框
         */final JFormattedTextField idTextField =newJFormattedTextField();
        idTextField.setForeground(Color.LIGHT_GRAY);
        idTextField.setToolTipText("");
        idTextField.setText("请输入您的账号");
        idTextField.setBounds(143,175,227,33);//                             添加账号框事件
        idTextField.addMouseListener(newMouseListener(){publicvoidmouseReleased(MouseEvent e){// TODO 当用户松开鼠标按钮时发生}publicvoidmousePressed(MouseEvent e){// TODO 当用户按下鼠标按钮时发生.if(idTextField.getText().equals("请输入您的账号"))
                idTextField.setText(null);
                idTextField.setForeground(Color.BLACK);}publicvoidmouseExited(MouseEvent e){// TODO 当鼠标离开你所监听的组件时发生.}publicvoidmouseEntered(MouseEvent e){// TODO  当鼠标离开当前组件并进入你所监听的组件时激活事件.}publicvoidmouseClicked(MouseEvent e){// TODO 鼠标按下后松开}});
        
        LoginPanel.add(idTextField);/**
         * 密码框
         */
        passwordField =newJPasswordField();
        passwordField.setBounds(143,221,227,33);
        LoginPanel.add(passwordField);/**
         * 登陆按钮
         */
        Button StdBtn =newButton("\u7BA1\u7406\u5458\u767B\u9646");
        StdBtn.addActionListener(newActionListener(){@SuppressWarnings("deprecation")publicvoidactionPerformed(ActionEvent e){if(idTextField.getText().equals("1")&&passwordField.getText().equals("1")){/**
                     * 登陆成功后自动关闭登陆界面进入到信息界面
                     */
                    System.out.print("登陆成功");dispose();
                    MySystemUI F=newMySystemUI();
                    F.setVisible(true);}else{
                    JOptionPane.showMessageDialog(null,"账户或密码错误，登陆失败！",null, JOptionPane.ERROR_MESSAGE);}}});
        StdBtn.setForeground(Color.DARK_GRAY);
        StdBtn.setFont(newFont("宋体", Font.BOLD,17));
        StdBtn.setBackground(Color.LIGHT_GRAY);
        StdBtn.setBounds(178,266,110,33);
        LoginPanel.add(StdBtn);/**
         * 背景图片的设置
         */
        JLabel BackgroundLabel =newJLabel(backimg);
        BackgroundLabel.setBounds(0,0,482,309);
        LoginPanel.add(BackgroundLabel);}}

运行结果：