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Java实训总结2019.6.25

2019-06-25 14:54:07 作者：互联网

按系部删除学生窗口DeleteStudentsByDepartment
package net.Caoxinru.student.gui;

import net.Caoxinru.student.bean.Student;
import net.Caoxinru.student.service.StudentService;
import net.Caoxinru.student.service.impl.StudentServiceImpl;

import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.*;
import java.util.Vector;
import java.util.List;

/**

功能：按系部删除学生记录
作者：曹鑫如

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

系部标签
/
private JLabel lblInputDepartment;
/*
系部文本框
/
private JTextField txtDepartment;
/*
面板
/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/*
按钮
/
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnDelete;
private JButton btnExit;
/*
记录行集
/
private Vector rows;
/*
表格列标题
/
private Vector colHead;
/*
表格
/
private JTable table;
/*
滚动面板
*/
private JScrollPane scroller;

/**

当前记录行号
/
private int currentRow;
/*
学生列表
/
private List students;
/*
创建学生服务对象
*/
private StudentService studentService;

/**

构造方法
@param title
*/
public DeleteStudentsByDepartmentFrame(String title) {
super(title);
intiGUI();
}

private void intiGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();

 rows = new Vector();
 colHead = new Vector();

 lblInputDepartment = new JLabel("输入系部：");
 txtDepartment = new JTextField(10);
 txtDepartment.setHorizontalAlignment(JTextField.CENTER);
 btnQuery = new JButton("查询[Q]");
 btnQuery.setMnemonic(KeyEvent.VK_Q);
 btnBrowseAll = new JButton("显示全部记录[A]");
 btnBrowseAll.setMnemonic(KeyEvent.VK_A);
 btnDelete = new JButton("删除查询的记录[D]");
 btnDelete.setEnabled(false);// 删除按钮不可用
 btnDelete.setMnemonic(KeyEvent.VK_D);
 btnExit = new JButton("退出[X]");
 btnExit.setMnemonic(KeyEvent.VK_X);

 // 添加组件
 panel.add(pnlSouth, BorderLayout.SOUTH);
 panel.add(pnlCenter, BorderLayout.CENTER);
 panel.add(pnlNorth, BorderLayout.NORTH);

 pnlNorth.add(lblInputDepartment);
 pnlNorth.add(txtDepartment);
 pnlNorth.add(btnQuery);
 pnlNorth.add(btnBrowseAll);
 pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
 pnlSouth.add(btnDelete);
 pnlSouth.add(btnExit);
 pnlCenter.setLayout(new BorderLayout());

 // 创建标题边框对象
 TitledBorder tb = new TitledBorder("查询结果");
 pnlCenter.setBorder(tb);

 // 创建学生服务对象
 studentService = new StudentServiceImpl();
 // 获取全部学生列表
 students = studentService.findAllStudents();
 // 填充表格数据
 fillTableData();

 // 设置窗口大小
 setSize(600, 350);
 // 设置窗口不可调整大小
 setResizable(false);
 // 设置窗口屏幕居中
 setLocationRelativeTo(null);
 // 设置窗口标题
 setTitle("按系部删除学生记录");
 // 设置窗口可见
 setVisible(true);
 // 设置窗口默认关闭操作
 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);


 // 【退出】按钮单击事件
 btnExit.addActionListener(new ActionListener() {
     @Override
     public void actionPerformed(ActionEvent event) {
         dispose();
     }
 });

 // 【删除】按钮单击事件
 btnDelete.addActionListener(new ActionListener() {
     @Override
     public void actionPerformed(ActionEvent e) {
         if (!rows.isEmpty()) {
             long choice = JOptionPane.showConfirmDialog(null, "是否要删除记录？");
             if (choice == JOptionPane.OK_OPTION) {
                 // 获取待删系部
                 String department = txtDepartment.getText().trim();
                 // 按系部删除学生
                 int count = studentService.deleteStudentsByDepartment(department);
                 if (count > 0) {
                     JOptionPane.showMessageDialog(null, "记录删除成功！", "提示", JOptionPane.INFORMATION_MESSAGE);
                     // 重新获取全部学生列表
                     students = studentService.findAllStudents();
                     // 清空待删班级文本框
                     txtDepartment.setText("");
                     // 填充数据
                     fillTableData();
                     // 删除按钮不可用
                     btnDelete.setEnabled(false);
                 } else {
                     JOptionPane.showMessageDialog(null, "记录删除失败！", "警告", JOptionPane.WARNING_MESSAGE);
                 }
             }
         }
     }
 });

 // 【查询】按钮单击事件
 btnQuery.addActionListener(new ActionListener() {
     @Override
     public void actionPerformed(ActionEvent event) {
         doQuery();
     }
 });

 // 【显示全部记录】按钮单击事件
 btnBrowseAll.addActionListener(new ActionListener() {
     @Override
     public void actionPerformed(ActionEvent event) {
         // 获取全部学生记录
         students = studentService.findAllStudents();
         // 填充表格数据
         fillTableData();
         // 删除按钮不可用
         btnDelete.setEnabled(false);
     }
 });

 // 【系部】文本框按键事件
 txtDepartment.addKeyListener(new KeyAdapter() {
     @Override
     public void keyPressed(KeyEvent e) {
         if (e.getKeyCode() == KeyEvent.VK_ENTER) {
             doQuery();
         }
     }
 });

 // 表格单击事件
 table.addMouseListener(new MouseAdapter() {
     public void mouseClicked(MouseEvent e) {
         // 获取当前行的行数
         int row = table.rowAtPoint(e.getPoint());
         // 选中鼠标单击的行
         table.setRowSelectionInterval(row, row);
         // 设置文本框内容
         txtDepartment.setText(table.getValueAt(row, 4).toString());
     }
 });

}

/**

查询方法
*/
private void doQuery() {
// 获取查询系部
String department = txtDepartment.getText().trim();
if (!department.equals("")) {
students = studentService.findStudentsByDepartment(department);
if (students.size() > 0) {
// 让删除按钮可用
btnDelete.setEnabled(true);
}
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, “请输入待查系部！”, “警告”, JOptionPane.WARNING_MESSAGE);
txtDepartment.requestFocus();
}
}

/**

填充表格方法
*/
private void fillTableData() {
// 填充表头
colHead.clear();
colHead.add(“学号”);
colHead.add(“姓名”);
colHead.add(“性别”);
colHead.add(“年龄”);
colHead.add(“系部”);
colHead.add(“班级”);
colHead.add(“电话”);

// 填充表记录
rows.clear();
for (Student student : students) {
Vector currentRow = new Vector();
currentRow.addElement(student.getId());
currentRow.addElement(student.getName());
currentRow.addElement(student.getSex());
currentRow.addElement(student.getAge() + “”);
currentRow.addElement(student.getDepartment());
currentRow.addElement(student.getClazz());
currentRow.addElement(student.getTelephone());
// 将当前行添加到记录行集
rows.add(currentRow);
}

// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);

// 定义滚动面板
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// 将滚动面板添加到中心面板
pnlCenter.add(scroller, BorderLayout.CENTER);

// 重绘窗体
repaint();

// 判断是否有记录行
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, “没有符合条件的记录！”, “错误提示”, JOptionPane.WARNING_MESSAGE);
txtDepartment.setText("");
} else {
// 让滚动条移到最上方
scroller.getVerticalScrollBar().setValue(0);
}
}

/**

主方法
@param args
*/
public static void main(String[] args) {
new DeleteStudentsByDepartmentFrame("");
}
}
按学号查询学生窗口FindStudentById
package net.Caoxinru.student.gui;

import net.Caoxinru.student.bean.Student;
import net.Caoxinru.student.service.StudentService;
import net.Caoxinru.student.service.impl.StudentServiceImpl;

import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.*;
import java.awt.print.PrinterException;
import java.util.Vector;
import java.util.List;

/**

功能：按学号查询学生记录
作者：曹鑫如
日期：2019年6月25日
/
public class FindStudentByIdFrame extends JFrame {
/*
- 学号标签
  /
  private JLabel lblInputId;
  /*
- 学号文本框
  /
  private JTextField txtId;
  /*
- 面板
  /
  private JPanel panel;
  private JPanel pnlSouth;
  private JPanel pnlCenter;
  private JPanel pnlNorth;
  /*
- 按钮
  /
  private JButton btnQuery;
  private JButton btnBrowseAll;
  private JButton btnPrint;
  private JButton btnExit;
  /*
- 记录行集
  /
  private Vector rows;
  /*
- 表格列标题
  /
  private Vector colHead;
  /*
- 表格
  /
  private JTable table;
  /*
- 滚动面板
  /
  private JScrollPane scroller;
  /*
- 当前记录行号
  /
  private int currentRow;
  /*
- 学生列表
  /
  private List students;
  /*
- 创建学生服务对象
  */
  private StudentService studentService;
/**
- 构造方法
- @param title
  */
  public FindStudentByIdFrame(String title) {
  super(title);
  intiGUI();
  }
/**
- 初始化用户界面
  */
  private void intiGUI() {
  // 创建组件
  panel = (JPanel) getContentPane();
  pnlNorth = new JPanel();
  pnlCenter = new JPanel();
  pnlSouth = new JPanel();
  
  rows = new Vector();
  colHead = new Vector();
  
  lblInputId = new JLabel(“输入学号：”);
  txtId = new JTextField(10);
  txtId.setHorizontalAlignment(JTextField.CENTER);
  btnQuery = new JButton(“查询[Q]”);
  btnQuery.setMnemonic(KeyEvent.VK_Q);
  btnBrowseAll = new JButton(“显示全部记录[A]”);
  btnBrowseAll.setMnemonic(KeyEvent.VK_A);
  btnPrint = new JButton(“打印[P]”);
  btnPrint.setMnemonic(KeyEvent.VK_D);
  btnExit = new JButton(“退出[X]”);
  btnExit.setMnemonic(KeyEvent.VK_X);
  
  // 添加组件
  panel.add(pnlSouth, BorderLayout.SOUTH);
  panel.add(pnlCenter, BorderLayout.CENTER);
  panel.add(pnlNorth, BorderLayout.NORTH);
  
  pnlNorth.add(lblInputId);
  pnlNorth.add(txtId);
  pnlNorth.add(btnQuery);
  pnlNorth.add(btnBrowseAll);
  pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
  pnlSouth.add(btnPrint);
  pnlSouth.add(btnExit);
  pnlCenter.setLayout(new BorderLayout());
  
  // 创建标题边框对象
  TitledBorder tb = new TitledBorder(“查询结果”);
  pnlCenter.setBorder(tb);
  
  // 创建学生服务对象
  studentService = new StudentServiceImpl();
  // 获取全部学生列表
  students = studentService.findAllStudents();
  // 填充表格数据
  fillTableData();
  
  // 设置窗口大小
  setSize(600, 350);
  // 设置窗口不可调整大小
  setResizable(false);
  // 设置窗口屏幕居中
  setLocationRelativeTo(null);
  // 设置窗口标题
  setTitle(“按学号查询学生记录”);
  // 设置窗口可见
  setVisible(true);
  // 设置窗口默认关闭操作
  setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  
  // 【退出】按钮单击事件
  btnExit.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent event) {
  dispose();
  }
  });
  
  // 【打印】按钮单击事件
  btnPrint.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  try {
  table.print();
  } catch (PrinterException e1) {
  e1.printStackTrace();
  }
  }
  });
  
  // 【查询】按钮单击事件
  btnQuery.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent event) {
  doQuery();
  }
  });
  
  // 【显示全部记录】按钮单击事件
  btnBrowseAll.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent event) {
  // 获取全部学生记录
  students = studentService.findAllStudents();
  // 填充表格数据
  fillTableData();
  // 删除按钮不可用
  btnPrint.setEnabled(false);
  }
  });
  
  // 【学号】文本框按键事件
  txtId.addKeyListener(new KeyAdapter() {
  @Override
  public void keyPressed(KeyEvent e) {
  if (e.getKeyCode() == KeyEvent.VK_ENTER) {
  doQuery();
  }
  }
  });
  
  // 表格单击事件
  table.addMouseListener(new MouseAdapter() {
  public void mouseClicked(MouseEvent e) {
  // 获取当前行的行数
  int row = table.rowAtPoint(e.getPoint());
  // 选中鼠标单击的行
  table.setRowSelectionInterval(row, row);
  // 设置文本框内容
  txtId.setText(table.getValueAt(row, 0).toString());
  }
  });
  }
/**
- 查询方法
  */
  private void doQuery() {
  // 获取查询学号
  String id = txtId.getText().trim();
  if (!id.equals("")) {
  students.clear();
  Student student = studentService.findStudentById(id);
  if (student != null) {
  // 将查询到的学生添加到列表
  students.add(student);
  }
  // 填充表格
  fillTableData();
  } else {
  JOptionPane.showMessageDialog(this, “请输入待查学生学号！”, “警告”, JOptionPane.WARNING_MESSAGE);
  txtId.requestFocus();
  }
  }
/**
- 填充表格方法
  */
  private void fillTableData() {
  // 填充表头
  colHead.clear();
  colHead.add(“学号”);
  colHead.add(“姓名”);
  colHead.add(“性别”);
  colHead.add(“年龄”);
  colHead.add(“系部”);
  colHead.add(“班级”);
  colHead.add(“电话”);
  
  // 填充表记录
  rows.clear();
  for (Student student : students) {
  Vector currentRow = new Vector();
  currentRow.addElement(student.getId());
  currentRow.addElement(student.getName());
  currentRow.addElement(student.getSex());
  currentRow.addElement(student.getAge() + “”);
  currentRow.addElement(student.getDepartment());
  currentRow.addElement(student.getClazz());
  currentRow.addElement(student.getTelephone());
  // 将当前行添加到记录行集
  rows.add(currentRow);
  }
  
  // 创建表格（参数1：记录集；参数2：表头）
  table = new JTable(rows, colHead);
  
  // 定义滚动面板
  scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
  JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
  // 将滚动面板添加到中心面板
  pnlCenter.add(scroller, BorderLayout.CENTER);
  
  // 重绘窗体
  repaint();
  
  // 判断是否有记录行
  if (rows.isEmpty()) {
  JOptionPane.showMessageDialog(this, “没有符合条件的记录！”, “错误提示”, JOptionPane.WARNING_MESSAGE);
  txtId.setText("");
  } else {
  // 让滚动条移到最上方
  scroller.getVerticalScrollBar().setValue(0);
  }
  }
/**
- 主方法
- @param args
  */
  public static void main(String[] args) {
  new FindStudentByIdFrame("");
  }
  }
  按姓名查询学生窗口FindStudentsByName
  package net.Caoxinru.student.gui;

import net.Caoxinru.student.bean.Student;
import net.Caoxinru.student.service.StudentService;
import net.Caoxinru.student.service.impl.StudentServiceImpl;

import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.*;
import java.awt.print.PrinterException;
import java.util.Vector;
import java.util.List;

/**

功能：按照名字查找学生信息
作者：曹鑫如
日期：2019年6月25日
/
public class FindStudentsByNameFrame extends JFrame {
/*
- 姓名标签
  /
  private JLabel lblInputName;
  /*
- 姓名文本框
  */
  private JTextField txtName;
/**
- 面板
  */
  private JPanel panel;
  private JPanel pnlSouth;
  private JPanel pnlCenter;
  private JPanel pnlNorth;
/**
- 按钮
  */
  private JButton btnQuery;
  private JButton btnBrowseAll;
  private JButton btnPrint;
  private JButton btnExit;
/**
- 记录行集
  /
  private Vector rows;
  /*
- 表格列标题
  /
  private Vector colHead;
  /*
- 表格
  /
  private JTable table;
  /*
- 滚动面板
  */
  private JScrollPane scroller;
/**
- 当前记录行号
  /
  private int currentRow;
  /*
- 学生列表
  /
  private List students;
  /*
- 创建学生服务对象
  */
  private StudentService studentService;
/**
- 构造方法
- @param title
  */
  public FindStudentsByNameFrame(String title) {
  super(title);
  intiGUI();
  }
/**
- 初始化用户界面
  */
  private void intiGUI() {
  // 创建对象
  panel = (JPanel) getContentPane();
  pnlNorth = new JPanel();
  pnlCenter = new JPanel();
  pnlSouth = new JPanel();
  
  rows = new Vector();
  colHead = new Vector();
  
  lblInputName = new JLabel(“输入姓名：”);
  txtName = new JTextField(10);
  txtName.setHorizontalAlignment(JTextField.CENTER);
  btnQuery = new JButton(“查询[Q]”);
  btnQuery.setMnemonic(KeyEvent.VK_Q);
  btnBrowseAll = new JButton(“显示全部记录[A]”);
  btnBrowseAll.setMnemonic(KeyEvent.VK_A);
  btnPrint = new JButton(“打印[P]”);
  btnPrint.setMnemonic(KeyEvent.VK_D);
  btnExit = new JButton(“退出[X]”);
  btnExit.setMnemonic(KeyEvent.VK_X);
  
  // 添加组件
  panel.add(pnlSouth, BorderLayout.SOUTH);
  panel.add(pnlCenter, BorderLayout.CENTER);
  panel.add(pnlNorth, BorderLayout.NORTH);
  
  pnlNorth.add(lblInputName);
  pnlNorth.add(txtName);
  pnlNorth.add(btnQuery);
  pnlNorth.add(btnBrowseAll);
  pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
  pnlSouth.add(btnPrint);
  pnlSouth.add(btnExit);
  pnlCenter.setLayout(new BorderLayout());
  
  // 创建标题边框对象
  TitledBorder tb = new TitledBorder(“查询结果”);
  pnlCenter.setBorder(tb);
  
  // 创建学生服务对象
  studentService = new StudentServiceImpl();
  // 获取全部学生列表
  students = studentService.findAllStudents();
  // 填充表格数据
  fillTableData();
  
  // 设置窗口大小
  setSize(600, 350);
  // 设置窗口不可调整大小
  setResizable(false);
  // 设置窗口屏幕居中
  setLocationRelativeTo(null);
  // 设置窗口标题
  setTitle(“按姓名查询学生记录”);
  // 设置窗口可见
  setVisible(true);
  // 设置窗口默认关闭操作
  setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  
  // 【退出】按钮单击事件
  btnExit.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent event) {
  dispose();
  }
  });
  
  // 【打印】按钮单击事件
  btnPrint.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  try {
  table.print();
  } catch (PrinterException e1) {
  e1.printStackTrace();
  }
  }
  });
  
  // 【查询】按钮单击事件
  btnQuery.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent event) {
  doQuery();
  }
  });
  
  // 【显示全部记录】按钮单击事件
  btnBrowseAll.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent event) {
  // 获取全部学生记录
  students = studentService.findAllStudents();
  // 填充表格数据
  fillTableData();
  }
  });
  
  // 【姓名】文本框按键事件
  txtName.addKeyListener(new KeyAdapter() {
  @Override
  public void keyPressed(KeyEvent e) {
  if (e.getKeyCode() == KeyEvent.VK_ENTER) {
  doQuery();
  }
  }
  });
  
  // 表格单击事件
  table.addMouseListener(new MouseAdapter() {
  public void mouseClicked(MouseEvent e) {
  // 获取当前行的行数
  int row = table.rowAtPoint(e.getPoint());
  // 选中鼠标单击的行
  table.setRowSelectionInterval(row, row);
  // 设置文本框内容
  txtName.setText(table.getValueAt(row, 1).toString());
  }
  });
  }
/**
- 查询方法
  */
  private void doQuery() {
  // 获取查询姓名
  String name = txtName.getText().trim();
  if (!name.equals("")) {
  // 按姓名查询获取学生列表
  students = studentService.findStudentsByName(name);
  // 填充表格
  fillTableData();
  } else {
  JOptionPane.showMessageDialog(this, “请输入待查学生姓名！”, “警告”, JOptionPane.WARNING_MESSAGE);
  txtName.requestFocus();
  }
  }
/**
- 填充表格方法
  */
  private void fillTableData() {
  // 填充表头
  colHead.clear();
  colHead.add(“姓名”);
  colHead.add(“姓名”);
  colHead.add(“性别”);
  colHead.add(“年龄”);
  colHead.add(“系部”);
  colHead.add(“班级”);
  colHead.add(“电话”);
  
  // 填充表记录
  rows.clear();
  for (Student student : students) {
  Vector currentRow = new Vector();
  currentRow.addElement(student.getId());
  currentRow.addElement(student.getName());
  currentRow.addElement(student.getSex());
  currentRow.addElement(student.getAge() + “”);
  currentRow.addElement(student.getDepartment());
  currentRow.addElement(student.getClazz());
  currentRow.addElement(student.getTelephone());
  // 将当前行添加到记录行集
  rows.add(currentRow);
  }
  
  // 创建表格（参数1：记录集；参数2：表头）
  table = new JTable(rows, colHead);
  
  // 定义滚动面板
  scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
  JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
  // 将滚动面板添加到中心面板
  pnlCenter.add(scroller, BorderLayout.CENTER);
  
  // 重绘窗体
  repaint();
  
  // 判断是否有记录行
  if (rows.isEmpty()) {
  JOptionPane.showMessageDialog(this, “没有符合条件的记录！”, “错误提示”, JOptionPane.WARNING_MESSAGE);
  txtName.setText("");
  } else {
  // 让滚动条移到最上方
  scroller.getVerticalScrollBar().setValue(0);
  }
  }
/**
- 主方法
- @param args
  */
  public static void main(String[] args) {
  new FindStudentsByNameFrame("");
  }
  }
  按班级查询学生窗口FindStudentsByClass
  package net.Caoxinru.student.gui;

import net.Caoxinru.student.bean.Student;
import net.Caoxinru.student.service.StudentService;
import net.Caoxinru.student.service.impl.StudentServiceImpl;

import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.*;
import java.awt.print.PrinterException;
import java.util.Vector;
import java.util.List;

/**

功能：按班级查询学生记录
作者：曹鑫如
日期：2019年6月25日
/
public class FindStudentByClassFrame extends JFrame {
/*
- 班级标签
  /
  private JLabel lblInputClass;
  /*
- 班级文本框
  /
  private JTextField txtClass;
  /*
- 面板
  /
  private JPanel panel;
  private JPanel pnlSouth;
  private JPanel pnlCenter;
  private JPanel pnlNorth;
  /*
- 按钮
  /
  private JButton btnQuery;
  private JButton btnBrowseAll;
  private JButton btnPrint;
  private JButton btnExit;
  /*
- 记录行集
  /
  private Vector rows;
  /*
- 表格列标题
  /
  private Vector colHead;
  /*
- 表格
  /
  private JTable table;
  /*
- 滚动面板
  */
  private JScrollPane scroller;
/**
- 当前记录行号
  /
  private int currentRow;
  /*
- 学生列表
  /
  private List students;
  /*
- 创建学生服务对象
  */
  private StudentService studentService;
/**
- 构造方法
- @param title
  */
  public FindStudentByClassFrame(String title) {
  super(title);
  intiGUI();
  }
/**
- 初始化用户界面
  */
  private void intiGUI() {
  // 创建组件
  panel = (JPanel) getContentPane();
  pnlNorth = new JPanel();
  pnlCenter = new JPanel();
  pnlSouth = new JPanel();
  
  rows = new Vector();
  colHead = new Vector();
  
  lblInputClass = new JLabel(“输入班级：”);
  txtClass = new JTextField(10);
  txtClass.setHorizontalAlignment(JTextField.CENTER);
  btnQuery = new JButton(“查询[Q]”);
  btnQuery.setMnemonic(KeyEvent.VK_Q);
  btnBrowseAll = new JButton(“显示全部记录[A]”);
  btnBrowseAll.setMnemonic(KeyEvent.VK_A);
  btnPrint = new JButton(“打印[P]”);
  btnPrint.setMnemonic(KeyEvent.VK_D);
  btnExit = new JButton(“退出[X]”);
  btnExit.setMnemonic(KeyEvent.VK_X);
  
  // 添加组件
  panel.add(pnlSouth, BorderLayout.SOUTH);
  panel.add(pnlCenter, BorderLayout.CENTER);
  panel.add(pnlNorth, BorderLayout.NORTH);
  
  pnlNorth.add(lblInputClass);
  pnlNorth.add(txtClass);
  pnlNorth.add(btnQuery);
  pnlNorth.add(btnBrowseAll);
  pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
  pnlSouth.add(btnPrint);
  pnlSouth.add(btnExit);
  pnlCenter.setLayout(new BorderLayout());
  
  // 创建标题边框对象
  TitledBorder tb = new TitledBorder(“查询结果”);
  pnlCenter.setBorder(tb);
  
  // 创建学生服务对象
  studentService = new StudentServiceImpl();
  // 获取全部学生列表
  students = studentService.findAllStudents();
  // 填充表格数据
  fillTableData();
  
  // 设置窗口大小
  setSize(600, 350);
  // 设置窗口不可调整大小
  setResizable(false);
  // 设置窗口屏幕居中
  setLocationRelativeTo(null);
  // 设置窗口标题
  setTitle(“按姓名查询学生记录”);
  // 设置窗口可见
  setVisible(true);
  // 设置窗口默认关闭操作
  setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  
  // 【退出】按钮单击事件
  btnExit.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent event) {
  dispose();
  }
  });
  
  // 【打印】按钮单击事件
  btnPrint.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  try {
  table.print();
  } catch (PrinterException e1) {
  e1.printStackTrace();
  }
  }
  });
  
  // 【查询】按钮单击事件
  btnQuery.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent event) {
  doQuery();
  }
  });
  
  // 【显示全部记录】按钮单击事件
  btnBrowseAll.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent event) {
  // 获取全部学生记录
  students = studentService.findAllStudents();
  // 填充表格数据
  fillTableData();
  }
  });
  
  // 【班级】文本框按键事件
  txtClass.addKeyListener(new KeyAdapter() {
  @Override
  public void keyPressed(KeyEvent e) {
  if (e.getKeyCode() == KeyEvent.VK_ENTER) {
  doQuery();
  }
  }
  });
  
  // 表格单击事件
  table.addMouseListener(new MouseAdapter() {
  public void mouseClicked(MouseEvent e) {
  // 获取当前行的行数
  int row = table.rowAtPoint(e.getPoint());
  // 选中鼠标单击的行
  table.setRowSelectionInterval(row, row);
  // 设置文本框内容
  txtClass.setText(table.getValueAt(row, 5).toString());
  }
  });
  }
/**
- 查询方法
  */
  private void doQuery() {
  // 获取查询班级
  String clazz = txtClass.getText().trim();
  if (!clazz.equals("")) {
  // 按班级查询获取学生列表
  students = studentService.findStudentsByClass(clazz);
  // 填充表格
  fillTableData();
  } else {
  JOptionPane.showMessageDialog(this, “请输入待查班级！”, “警告”, JOptionPane.WARNING_MESSAGE);
  txtClass.requestFocus();
  }
  }
/**
- 填充表格方法
  */
  private void fillTableData() {
  // 填充表头
  colHead.clear();
  colHead.add(“班级”);
  colHead.add(“班级”);
  colHead.add(“性别”);
  colHead.add(“年龄”);
  colHead.add(“系部”);
  colHead.add(“班级”);
  colHead.add(“电话”);
  
  // 填充表记录
  rows.clear();
  for (Student student : students) {
  Vector currentRow = new Vector();
  currentRow.addElement(student.getId());
  currentRow.addElement(student.getName());
  currentRow.addElement(student.getSex());
  currentRow.addElement(student.getAge() + “”);
  currentRow.addElement(student.getDepartment());
  currentRow.addElement(student.getClazz());
  currentRow.addElement(student.getTelephone());
  // 将当前行添加到记录行集
  rows.add(currentRow);
  }
  
  // 创建表格（参数1：记录集；参数2：表头）
  table = new JTable(rows, colHead);
  
  // 定义滚动面板
  scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
  JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
  // 将滚动面板添加到中心面板
  pnlCenter.add(scroller, BorderLayout.CENTER);
  
  // 重绘窗体
  repaint();
  
  // 判断是否有记录行
  if (rows.isEmpty()) {
  JOptionPane.showMessageDialog(this, “没有符合条件的记录！”, “错误提示”, JOptionPane.WARNING_MESSAGE);
  txtClass.setText("");
  } else {
  // 让滚动条移到最上方
  scroller.getVerticalScrollBar().setValue(0);
  }
  }
/**
- 主方法
- @param args
  */
  public static void main(String[] args) {
  new FindStudentByClassFrame("");
  }
  }
  
  按系部查询学生窗口FindStudentsByDepartment

package net.Caoxinru.student.gui;

import net.Caoxinru.student.bean.Student;
import net.Caoxinru.student.service.StudentService;
import net.Caoxinru.student.service.impl.StudentServiceImpl;

import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.*;
import java.awt.print.PrinterException;
import java.util.Vector;
import java.util.List;

/**

功能：按系部查询学生记录
作者：曹鑫如
日期：2019年6月25日
/
public class FindStudentsByDepartmentFrame extends JFrame {
/*
- 系部标签
  /
  private JLabel lblInputDepartment;
  /*
- 系部文本框
  /
  private JTextField txtDepartment;
  /*
- 面板
  /
  private JPanel panel;
  private JPanel pnlSouth;
  private JPanel pnlCenter;
  private JPanel pnlNorth;
  /*
- 按钮
  /
  private JButton btnQuery;
  private JButton btnBrowseAll;
  private JButton btnPrint;
  private JButton btnExit;
  /*
- 记录行集
  /
  private Vector rows;
  /*
- 表格列标题
  /
  private Vector colHead;
  /*
- 表格
  /
  private JTable table;
  /*
- 滚动面板
  */
  private JScrollPane scroller;
/**
- 当前记录行号
  /
  private int currentRow;
  /*
- 学生列表
  /
  private List students;
  /*
- 创建学生服务对象
  */
  private StudentService studentService;
/**
- 构造方法
- @param title
  */
  public FindStudentsByDepartmentFrame(String title) {
  super(title);
  intiGUI();
  }
/**
- 初始化用户界面
  */
  private void intiGUI() {
  // 创建组件
  panel = (JPanel) getContentPane();
  pnlNorth = new JPanel();
  pnlCenter = new JPanel();
  pnlSouth = new JPanel();
  
  rows = new Vector();
  colHead = new Vector();
  
  lblInputDepartment = new JLabel(“输入系部：”);
  txtDepartment = new JTextField(10);
  txtDepartment.setHorizontalAlignment(JTextField.CENTER);
  btnQuery = new JButton(“查询[Q]”);
  btnQuery.setMnemonic(KeyEvent.VK_Q);
  btnBrowseAll = new JButton(“显示全部记录[A]”);
  btnBrowseAll.setMnemonic(KeyEvent.VK_A);
  btnPrint = new JButton(“打印[P]”);
  btnPrint.setMnemonic(KeyEvent.VK_D);
  btnExit = new JButton(“退出[X]”);
  btnExit.setMnemonic(KeyEvent.VK_X);
  
  // 添加组件
  panel.add(pnlSouth, BorderLayout.SOUTH);
  panel.add(pnlCenter, BorderLayout.CENTER);
  panel.add(pnlNorth, BorderLayout.NORTH);
  
  pnlNorth.add(lblInputDepartment);
  pnlNorth.add(txtDepartment);
  pnlNorth.add(btnQuery);
  pnlNorth.add(btnBrowseAll);
  pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
  pnlSouth.add(btnPrint);
  pnlSouth.add(btnExit);
  pnlCenter.setLayout(new BorderLayout());
  
  // 创建标题边框对象
  TitledBorder tb = new TitledBorder(“查询结果”);
  pnlCenter.setBorder(tb);
  
  // 创建学生服务对象
  studentService = new StudentServiceImpl();
  // 获取全部学生列表
  students = studentService.findAllStudents();
  // 填充表格数据
  fillTableData();
  
  // 设置窗口大小
  setSize(600, 350);
  // 设置窗口不可调整大小
  setResizable(false);
  // 设置窗口屏幕居中
  setLocationRelativeTo(null);
  // 设置窗口标题
  setTitle(“按系部查询学生记录”);
  // 设置窗口可见
  setVisible(true);
  // 设置窗口默认关闭操作
  setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  
  // 【退出】按钮单击事件
  btnExit.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent event) {
  dispose();
  }
  });
  
  // 【打印】按钮单击事件
  btnPrint.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  try {
  table.print();
  } catch (PrinterException e1) {
  e1.printStackTrace();
  }
  }
  });
  
  // 【查询】按钮单击事件
  btnQuery.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent event) {
  doQuery();
  }
  });
  
  // 【显示全部记录】按钮单击事件
  btnBrowseAll.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent event) {
  // 获取全部学生记录
  students = studentService.findAllStudents();
  // 填充表格数据
  fillTableData();
  }
  });
  
  // 【系部】文本框按键事件
  txtDepartment.addKeyListener(new KeyAdapter() {
  @Override
  public void keyPressed(KeyEvent e) {
  if (e.getKeyCode() == KeyEvent.VK_ENTER) {
  doQuery();
  }
  }
  });
  
  // 表格单击事件
  table.addMouseListener(new MouseAdapter() {
  public void mouseClicked(MouseEvent e) {
  // 获取当前行的行数
  int row = table.rowAtPoint(e.getPoint());
  // 选中鼠标单击的行
  table.setRowSelectionInterval(row, row);
  // 设置文本框内容
  txtDepartment.setText(table.getValueAt(row, 5).toString());
  }
  });
  }
/**
- 查询方法
  */
  private void doQuery() {
  // 获取查询系部
  String department = txtDepartment.getText().trim();
  if (!department.equals("")) {
  // 按系部查询获取学生列表
  students = studentService.findStudentsByDepartment(department);
  // 填充表格
  fillTableData();
  } else {
  JOptionPane.showMessageDialog(this, “请输入待查系部！”, “警告”, JOptionPane.WARNING_MESSAGE);
  txtDepartment.requestFocus();
  }
  }
/**
- 填充表格方法
  */
  private void fillTableData() {
  // 填充表头
  colHead.clear();
  colHead.add(“系部”);
  colHead.add(“系部”);
  colHead.add(“性别”);
  colHead.add(“年龄”);
  colHead.add(“系部”);
  colHead.add(“系部”);
  colHead.add(“电话”);
  
  // 填充表记录
  rows.clear();
  for (Student student : students) {
  Vector currentRow = new Vector();
  currentRow.addElement(student.getId());
  currentRow.addElement(student.getName());
  currentRow.addElement(student.getSex());
  currentRow.addElement(student.getAge() + “”);
  currentRow.addElement(student.getDepartment());
  currentRow.addElement(student.getClazz());
  currentRow.addElement(student.getTelephone());
  // 将当前行添加到记录行集
  rows.add(currentRow);
  }
  
  // 创建表格（参数1：记录集；参数2：表头）
  table = new JTable(rows, colHead);
  
  // 定义滚动面板
  scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
  JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
  // 将滚动面板添加到中心面板
  pnlCenter.add(scroller, BorderLayout.CENTER);
  
  // 重绘窗体
  repaint();
  
  // 判断是否有记录行
  if (rows.isEmpty()) {
  JOptionPane.showMessageDialog(this, “没有符合条件的记录！”, “错误提示”, JOptionPane.WARNING_MESSAGE);
  txtDepartment.setText("");
  } else {
  // 让滚动条移到最上方
  scroller.getVerticalScrollBar().setValue(0);
  }
  }
/**
- 主方法
- @param args
  */
  public static void main(String[] args) {
  new FindStudentsByDepartmentFrame("");
  }

} 在这里插入图片描述
修改系统主窗口MainFrame
package net.Caoxinru.student.gui;

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

import javax.swing.;
import java.awt.;
import java.awt.event.*;
import java.io.IOException;

/**

功能：主界面窗口
```
 通过菜单系统
```
```
 调用各个功能模块
```
作者：曹鑫如
日期：2019年6月20日
/
public class MainFrame extends JFrame {
/*
- 菜单部分
  /
  private JMenuBar mnbMain;
  /*
- 设置菜单
  /
  private JMenu mnuSet;
  private JMenuItem mniSetCollegeInfo;
  private JMenuItem mniSetStatusBar;
  private JMenuItem mniChangePassword;
  private JMenuItem mniExit;
  /*
- 操作菜单
  /
  private JMenu mnuOperate;
  private JMenuItem mniAddStudent;
  private JMenuItem mniBrowseStudent;
  private JMenuItem mniEditStudent;
  /*
- 删除菜单
  /
  private JMenu mnuDelStu;
  private JMenuItem mniDelStudentById;
  private JMenuItem mniDelStudentsByClass;
  private JMenuItem mniDelStudentsByDepartment;
  /*
- 查询菜单
  /
  private JMenu mnuFind;
  private JMenuItem mniFindStudentById;
  private JMenuItem mniFindStudentsByName;
  private JMenuItem mniFindStudentsByClass;
  private JMenuItem mniFindStudentsByDepartment;
  /*
- 统计菜单
  /
  private JMenu mnuCount;
  private JMenuItem mniCountStudentsBySex;
  private JMenuItem mniCountStudentsByClass;
  private JMenuItem mniCountStudentsByDepartment;
  /*
- 帮助菜单
  /
  private JMenu mnuHelp;
  private JMenuItem mniHelp;
  private JMenuItem mniAbout;
  /*
- 面板
  /
  private JPanel panel;
  private JPanel pnlCenter;
  private JPanel pnlSouth;
  /*
- 状态栏标签
  /
  private JLabel lblStatusBar;
  /*
- 背景标签
  */
  private JLabel lblBackground;
/**
- 图标对象
  /
  private ImageIcon imgCollege;
  private ImageIcon imgExit;
  private ImageIcon imgPassword;
  private ImageIcon imgQuery;
  private ImageIcon imgBrowse;
  private ImageIcon imgCount;
  private ImageIcon imgBackground;
  /*
- 工具栏
  /
  private JToolBar toolbar;
  /*
- 按钮
  /
  private JButton btnSetCollege;
  private JButton btnChangePassword;
  private JButton btnFindStudentById;
  private JButton btnExit;
  private JButton btnBrowseStudent;
  private JButton btnCountByDepartment;
  /*
- 状态对象
  /
  private Status status;
  /*
- 状态服务对象
  */
  private StatusService statusService;
/**
- 构造方法
- @param title
  */
  public MainFrame(String title) {
  super(title);
  initGUI();
  }
/**
- 初始化图形用户界面
  */
  private void initGUI() {
  // 创建主菜单
  mnbMain = new JMenuBar();
  
  // 创建【设置】菜单及其菜单项
  mnuSet = new JMenu(“系统设置[S]”);
  mnuSet.setMnemonic(KeyEvent.VK_S);
  mniSetCollegeInfo = new JMenuItem(“学校信息”);
  mniSetStatusBar = new JMenuItem(“状态栏信息”);
  mniChangePassword = new JMenuItem(“修改密码”);
  mniExit = new JMenuItem(“退出系统”);
  
  // 创建【操作】菜单及其菜单项
  mnuOperate = new JMenu(“数据操作[O]”);
  mnuOperate.setMnemonic(KeyEvent.VK_O);
  mniAddStudent = new JMenuItem(“增加学生表记录”);
  mnuDelStu = new JMenu(“删除学生表记录”);
  mniEditStudent = new JMenuItem(“编辑学生表记录”);
  mniBrowseStudent = new JMenuItem(“浏览学生表记录”);
  
  // 创建【删除学生表记录】的子菜单
  mniDelStudentById = new JMenuItem(“按学号删除”);
  mniDelStudentsByClass = new JMenuItem(“按班级删除”);
  mniDelStudentsByDepartment = new JMenuItem(“按系部删除”);
  
  // 创建【查询】菜单及其菜单项
  mnuFind = new JMenu(“查询学生[Q]”);
  mnuFind.setMnemonic(KeyEvent.VK_Q);
  mniFindStudentById = new JMenuItem(“按学号查询”);
  mniFindStudentsByName = new JMenuItem(“按姓名查询”);
  mniFindStudentsByClass = new JMenuItem(“按班级查询”);
  mniFindStudentsByDepartment = new JMenuItem(“按系部查询”);
  
  // 创建【统计】菜单及其菜单项
  mnuCount = new JMenu(“人数统计[C]”);
  mnuCount.setMnemonic(KeyEvent.VK_C);
  mniCountStudentsBySex = new JMenuItem(“按性别统计”);
  mniCountStudentsByClass = new JMenuItem(“按班级统计”);
  mniCountStudentsByDepartment = new JMenuItem(“按系部统计”);
  
  // 创建【帮助】菜单及其菜单项
  mnuHelp = new JMenu(“帮助[H]”);
  mnuHelp.setMnemonic(KeyEvent.VK_H);
  mniHelp = new JMenuItem(“帮助”);
  mniAbout = new JMenuItem(“关于”);
  
  // 创建图标对象
  imgCollege = new ImageIcon(“images/college.png”);
  imgPassword = new ImageIcon(“images/password.png”);
  imgQuery = new ImageIcon(“images/query.png”);
  imgBrowse = new ImageIcon(“images/browse.png”);
  imgCount = new ImageIcon(“images/count.png”);
  imgExit = new ImageIcon(“images/exit.png”);
  
  // 创建工具栏
  toolbar = new JToolBar();
  btnSetCollege = new JButton(“设置学校”, imgCollege);
  btnSetCollege.setToolTipText(“设置学校信息”);
  btnSetCollege.setVerticalTextPosition(AbstractButton.BOTTOM);
  btnSetCollege.setHorizontalTextPosition(AbstractButton.CENTER);
  btnChangePassword = new JButton(“修改密码”, imgPassword);
  btnChangePassword.setToolTipText(“修改用户密码”);
  btnChangePassword.setVerticalTextPosition(AbstractButton.BOTTOM);
  btnChangePassword.setHorizontalTextPosition(AbstractButton.CENTER);
  btnBrowseStudent = new JButton(“浏览学生”, imgBrowse);
  btnBrowseStudent.setToolTipText(“浏览学生记录”);
  btnBrowseStudent.setVerticalTextPosition(AbstractButton.BOTTOM);
  btnBrowseStudent.setHorizontalTextPosition(AbstractButton.CENTER);
  btnFindStudentById = new JButton(“查询学生”, imgQuery);
  btnFindStudentById.setToolTipText(“按学号查询学生记录”);
  btnFindStudentById.setVerticalTextPosition(AbstractButton.BOTTOM);
  btnFindStudentById.setHorizontalTextPosition(AbstractButton.CENTER);
  btnCountByDepartment = new JButton(“统计人数”, imgCount);
  btnCountByDepartment.setToolTipText(“按系部统计学生人数”);
  btnCountByDepartment.setVerticalTextPosition(AbstractButton.BOTTOM);
  btnCountByDepartment.setHorizontalTextPosition(AbstractButton.CENTER);
  btnExit = new JButton(“退出系统”, imgExit);
  btnExit.setToolTipText(“退出系统”);
  btnExit.setVerticalTextPosition(AbstractButton.BOTTOM);
  btnExit.setHorizontalTextPosition(AbstractButton.CENTER);
  toolbar.add(btnSetCollege);
  toolbar.add(btnChangePassword);
  toolbar.add(btnBrowseStudent);
  toolbar.add(btnFindStudentById);
  toolbar.add(btnCountByDepartment);
  toolbar.add(btnExit);
  
  // 创建面板
  panel = (JPanel) getContentPane();
  pnlCenter = new JPanel();
  pnlSouth = new JPanel();
  pnlSouth.setLayout(new FlowLayout(FlowLayout.LEFT));
  
  // 创建背景图片
  imgBackground = new ImageIcon(“images/background.jpg”);
  // 创建背景标签
  lblBackground = new JLabel(imgBackground);
  // 创建状态栏标签
  lblStatusBar = new JLabel();
  
  // 设置菜单栏
  setJMenuBar(mnbMain);
  // 添加【设置】菜单
  mnbMain.add(mnuSet);
  mnuSet.add(mniSetCollegeInfo);
  mnuSet.add(mniSetStatusBar);
  mnuSet.add(mniChangePassword);
  mnuSet.addSeparator();
  mnuSet.add(mniExit);
  
  // 添加【删除学生表记录】菜单
  mnuDelStu.add(mniDelStudentById);
  mnuDelStu.add(mniDelStudentsByClass);
  mnuDelStu.add(mniDelStudentsByDepartment);
  
  // 添加【操作】菜单
  mnbMain.add(mnuOperate);
  mnuOperate.add(mniAddStudent);
  mnuOperate.add(mniEditStudent);
  mnuOperate.add(mnuDelStu);
  mnuOperate.add(mniBrowseStudent);
  
  // 添加【查询】菜单
  mnbMain.add(mnuFind);
  mnuFind.add(mniFindStudentById);
  mnuFind.add(mniFindStudentsByName);
  mnuFind.add(mniFindStudentsByClass);
  mnuFind.add(mniFindStudentsByDepartment);
  
  // 添加【统计】菜单
  mnbMain.add(mnuCount);
  mnuCount.add(mniCountStudentsBySex);
  mnuCount.add(mniCountStudentsByClass);
  mnuCount.add(mniCountStudentsByDepartment);
  
  // 添加【帮助】菜单
  mnbMain.add(mnuHelp);
  mnuHelp.add(mniHelp);
  mnuHelp.add(mniAbout);
  
  // 添加面板
  panel.setLayout(new BorderLayout());
  panel.add(toolbar, “North”);
  panel.add(pnlCenter, “Center”);
  panel.add(pnlSouth, “South”);
  pnlCenter.add(lblBackground);
  pnlSouth.add(lblStatusBar);
  
  // 非管理员不能设置状态栏
  if (!Application.username.equals(“admin”)) {
  mniSetStatusBar.setEnabled(false);
  mniAddStudent.setEnabled(false);
  mnuDelStu.setEnabled(false);
  mniEditStudent.setEnabled(false);
  }
  
  // 设置状态栏信息
  setStatusBar();
  
  // 创建状态服务对象
  statusService = new StatusServiceImpl();
  // 获取状态对象
  status = statusService.findStatusByID(1);
  
  // 设置窗口尺寸
  setSize(800, 640);
  // 设置窗口可见
  setVisible(true);
  // 设置窗口屏幕居中
  setLocationRelativeTo(null);
  // 设置窗口标题
  setTitle(“学生信息管理系统” + status.getVersion());
  
  // 注册窗口监听器，继承窗口适配器，编写事件处理方法
  addWindowListener(new WindowAdapter() {
  @Override
  public void windowClosing(WindowEvent e) {
  exitSystem();
  }
  });
  
  // 设置菜单
  // 【设置学校信息】菜单项单击事件
  mniSetCollegeInfo.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new SetCollegeInfoFrame("");
  }
  });
  
  // 【设置状态栏信息】菜单项单击事件
  mniSetStatusBar.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new SetStatusBarFrame("");
  }
  });
  
  // 【修改密码】菜单项单击事件
  mniChangePassword.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new ChangePasswordFrame("");
  }
  });
  
  // 【退出系统】菜单项单击事件
  mniExit.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
  exitSystem();
  }
  });
  
  // 查询菜单
  // 【按学号查询】菜单项单击事件
  mniFindStudentById.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new FindStudentByIdFrame("");
  }
  });
  
  // 【按姓名查询】菜单项单击事件
  mniFindStudentsByName.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new FindStudentsByNameFrame("");
  }
  });
  
  // 【按班级查询】菜单项单击事件
  mniFindStudentsByClass.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new FindStudentByClassFrame("");
  }
  });
  
  // 【按系部查询】菜单项单击事件
  mniFindStudentsByDepartment.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new FindStudentsByDepartmentFrame("");
  }
  });
  
  // 统计菜单
  // 【按性别统计人数】菜单项单击事件
  mniCountStudentsBySex.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new CountStudentsBySexFrame("");
  }
  });
  
  // 【按班级统计人数】菜单项单击事件
  mniCountStudentsByClass.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new CountStudentsByClassFrame("");
  }
  });
  
  // 【按系部统计人数】菜单项单击事件
  mniCountStudentsByDepartment.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new CountStudentsByDepartmentFrame("");
  }
  });
  
  // 【增加学生记录】菜单项单击事件
  mniAddStudent.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
  new AddStudentFrame("");
  }
  });
  
  // 【按学号删除学生记录】菜单项单击事件
  mniDelStudentById.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new DeleteStudentByIdFrame("");
  }
  });
  
  // 【按班级删除学生记录】菜单项单击事件
  mniDelStudentsByClass.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new DeleteStudentsByClassFrame("");
  }
  });
  
  // 【按系部删除学生记录】菜单项单击事件
  mniDelStudentsByDepartment.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new DeleteStudentsByDepartmentFrame("");
  }
  });
  
  // 【编辑学生记录】菜单项单击事件
  mniEditStudent.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
  new EditStudentFrame("");
  }
  });
  
  // 【浏览学生记录】菜单项单击事件
  mniBrowseStudent.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
  new BrowseStudentsFrame("");
  }
  });
  
  // 【帮助】菜单单击事件
  mniHelp.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
  try {
  Runtime.getRuntime().exec(“cmd /c start help/帮助文档.chm”);
  } catch (IOException e1) {
  JOptionPane.showMessageDialog(null, e1.getMessage(), “学生信息管理系统”, JOptionPane.ERROR_MESSAGE);
  }
  }
  });
  
  // 【关于】菜单单击事件
  mniAbout.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
  JOptionPane.showMessageDialog(null,
  “开发人员：” + status.getCollege() + “_” + status.getAuthor() + “\n联系电话：” + status.getTelephone()
  + “\n电子邮箱：” + status.getEmail(),
  “学生信息管理系统” + status.getVersion(), JOptionPane.INFORMATION_MESSAGE);
  }
  });
  
  // 工具栏按钮单击事件
  // 【设置学校信息】按钮
  btnSetCollege.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new SetCollegeInfoFrame("");
  }
  });
  
  // 【修改密码】按钮
  btnChangePassword.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new ChangePasswordFrame("");
  }
  });
  
  // 【浏览】按钮
  btnBrowseStudent.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new BrowseStudentsFrame("");
  }
  });
  
  // 【查询】按钮
  btnFindStudentById.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new FindStudentByIdFrame("");
  }
  });
  
  // 【统计】按钮
  btnCountByDepartment.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  new CountStudentsByDepartmentFrame("");
  }
  });
  
  // 【退出】按钮
  btnExit.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
  exitSystem();
  }
  });
  }
/**
- 退出系统（询问用户是否要退出）
  */
  private void exitSystem() {
  int choice = JOptionPane.showConfirmDialog(this,
  “您是否要退出系统？”, “学生信息管理系统”, JOptionPane.YES_NO_OPTION);
  if (choice == JOptionPane.YES_OPTION) {
  System.exit(0);
  } else {
  // 卸载当前窗口
  dispose();
  // 重新显示主窗口
  Application.mainFrame = new MainFrame(“学生信息管理系统” + status.getVersion());
  }
  }
/**
- 设置状态栏信息
  */
  public void setStatusBar() {
  // 创建状态服务对象
  statusService = new StatusServiceImpl();
  // 获取状态栏对象
  status = statusService.findStatusByID(1);
  // 设置状态栏标签
  lblStatusBar.setText(
  status.getCollege() + “学生信息管理系统” + status.getVersion() + " 作者：" + status.getAuthor() + " 地址："
  + status.getAddress() + " 电话：" + status.getTelephone() + " 邮箱：" + status.getEmail());
  }
/**
- 主方法
- @param args
  */
  public static void main(String[] args) {
  Application.mainFrame = new MainFrame("");
  }
  }
  启动登录窗口，成功登录后，可以在主界面里通过菜单系统调用各个功能模块。

标签：25,Java,2019.6,private,public,add,student,new,void
来源： https://blog.csdn.net/Ccaoxinru/article/details/93617491