实训4

状态栏的设置，代码如下：
package net.mf.student.gui;

import net.mf.student.app.Application;
import net.mf.student.bean.Status;
import net.mf.student.service.StatusService;
import net.mf.student.service.impl.StatusServiceImpl;

import javax.swing.;
import java.awt.;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

/**

• 功能：设置状态栏信息

• 作者：马飞

• 日期：2019年6月25日
  /
  public class SetStatusBarFrame extends JFrame {
  /*

  • 面板
    /
    private JPanel panel;
    private JPanel panel1;
    private JPanel panel2;
    private JPanel panel3;
    private JPanel panel4;
    private JPanel panel5;
    /*
  • 标签
    /
    private JLabel lblCollege;
    private JLabel lblVersion;
    private JLabel lblAuthor;
    private JLabel lblTelephone;
    private JLabel lblAddress;
    private JLabel lblEmail;
    /*
  • 文本框
    /
    private JTextField txtCollege;
    private JTextField txtVersion;
    private JTextField txtAuthor;
    private JTextField txtTelephone;
    private JTextField txtAddress;
    private JTextField txtEmail;
    /*
  • 按钮
    /
    private JButton btnSave;
    private JButton btnExit;
    /*
  • 状态服务对象
    */
    private StatusService statusService;

  /**

  • 构造方法
  • @param title
    */
    public SetStatusBarFrame(String title) {
    super(title);
    initGUI();
    }

  /**

  • 初始化用户界面
    */
    private void initGUI() {
    // 创建组件
    panel = (JPanel) getContentPane();
    panel1 = new JPanel();
    panel2 = new JPanel();
    panel3 = new JPanel();
    panel4 = new JPanel();
    panel5 = new JPanel();

    lblCollege = new JLabel(“校名：”);
    lblVersion = new JLabel(“版本：”);
    lblAuthor = new JLabel(“作者：”);
    lblTelephone = new JLabel(“电话：”);
    lblAddress = new JLabel(“地址：”);
    lblEmail = new JLabel(“邮件：”);

    txtCollege = new JTextField(12);
    txtVersion = new JTextField(12);
    txtAuthor = new JTextField(12);
    txtTelephone = new JTextField(12);
    txtAddress = new JTextField(29);
    txtEmail = new JTextField(29);

    btnSave = new JButton(“保存[S]”);
    btnSave.setMnemonic(KeyEvent.VK_S);
    btnExit = new JButton(“退出[X]”);
    btnExit.setMnemonic(KeyEvent.VK_X);

    // 添加组件
    panel.setLayout(new GridLayout(5, 1));
    panel.add(panel1);
    panel.add(panel2);
    panel.add(panel3);
    panel.add(panel4);
    panel.add(panel5);

    panel1.add(lblCollege);
    panel1.add(txtCollege);
    panel1.add(lblVersion);
    panel1.add(txtVersion);

    panel2.add(lblAuthor);
    panel2.add(txtAuthor);
    panel2.add(lblTelephone);
    panel2.add(txtTelephone);

    panel3.add(lblAddress);
    panel3.add(txtAddress);
    panel4.add(lblEmail);
    panel4.add(txtEmail);

    panel5.add(btnSave);
    panel5.add(btnExit);

    // 创建状态服务对象
    statusService = new StatusServiceImpl();
    // 按标识符获取状态对象
    Status status = statusService.findStatusById(1);
    if (status != null) {
    txtCollege.setText(status.getCollege());
    txtVersion.setText(status.getVersion());
    txtAuthor.setText(status.getAuthor());
    txtAddress.setText(status.getAuthor());
    txtTelephone.setText(status.getTelephone());
    txtAddress.setText(status.getAddress());
    txtEmail.setText(status.getEmail());
    }

    // 设置窗口属性
    setResizable(false);
    pack();
    setLocationRelativeTo(null);
    setVisible(true);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    // 【关闭】按钮事件处理
    btnExit.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent arg0) {
    dispose();
    }
    });

    // 【保存】按钮事件处理
    btnSave.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
    // 获取状态信息对象
    Status status = statusService.findStatusById(1);
    // 修改属性值
    status.setCollege(txtCollege.getText());
    status.setVersion(txtVersion.getText());
    status.setAuthor(txtAuthor.getText());
    status.setTelephone(txtTelephone.getText());
    status.setAddress(txtAddress.getText());
    status.setEmail(txtEmail.getText());
    // 更新状态记录
    int count = statusService.updateStatus(status);
    // 判断是否更新成功
    if (count > 0) {
    Application.mainFrame.setStatusBar();
    Application.mainFrame.setTitle(“学生信息管理系统” + status.getVersion());
    }
    }
    });
    }
    }
    然后在主界面里添加方法，在运行：
    
    最后运行登录窗口，结果如下：