＜Java＞ JVA303-門診掛號系統

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class JVA303 extends JFrame implements ItemListener
{
  //pnMain 包含了 pnMainA ,pnMainB
  JPanel      pnMain   = new JPanel();

  //pnMainA 包含了 pn1,pn2
  JPanel      pnMainA   = new JPanel();

  //pn1 包含了 name, chSex
  JPanel      pn1       = new JPanel();
  JTextField  name      = new JTextField(5); //姓名
  String sex[] = {"先生","小姐"};
  JComboBox   chSex     = new JComboBox(sex);//性別

  //pn2 包含了 chDep, chDr
  JPanel      pn2       = new JPanel();
  String Dep[] = {"內科","外科","婦產科"};
  JComboBox   chDep     = new JComboBox(Dep);   //科別
  String Dr[] = {"令狐沖","任盈盈"};
  JComboBox   chDr      = new JComboBox(Dr);   //醫師

  //pn3 包含了 chWeekDay
  JPanel      pn3       = new JPanel();
  String WeekDay[] = {"星期一早上","星期二晚上","星期三晚上","星期四下午","星期五晚上"};
  JComboBox   chWeekDay = new JComboBox(WeekDay);   //門診時段

  //pnMainB 包含了ta
  JPanel      pnMainB   = new JPanel();
  JTextArea   ta        = new JTextArea("尚未完成掛號", 4, 20);

  //pnButton 包含了b1, b2
  JPanel      pnButton  = new JPanel();
  JButton     b1        = new JButton("確定");
  JButton     b2        = new JButton("離開");

  public JVA303()
  {
    super("門診掛號系統");
    addWindowListener(new WinListener());
  }

  public static void main(String[] args)
  {
    JVA303 test = new JVA303();
    test.setup();
    test.setSize(250,270);
    test.setVisible(true);
  }

  //建立畫面
  void setup()
  {
    //將視覺元件放入 JPanel 中
    chDep.addItemListener(this);
    chDr.addItemListener(this);
    pn1.add(new JLabel("姓名:"));
    pn1.add(name);
    pn1.add(new JLabel("性別:"));
    pn1.add(chSex);
   pn2.add(new JLabel("科別:"));
    pn2.add(chDep);
    pn2.add(new JLabel("醫師:"));
    pn2.add(chDr);
    pn3.add(new JLabel("門診時段:"));
   pn3.add(chWeekDay);

    pnMainA.setLayout(new GridLayout(0,1));
    pnMainA.add(pn1);
    pnMainA.add(pn2);
    pnMainA.add(pn3);
    pnMainB.add(ta);
    pnMain.add(pnMainA);
    pnMain.add(pnMainB);

    b1.addActionListener(new act());
    b2.addActionListener(new act());
    pnButton.add(b1);
    pnButton.add(b2);
    Container contentPane = getContentPane();
    contentPane.add(pnMain);
    contentPane.add(pnButton,BorderLayout.SOUTH);
  }

  //依第一個下拉式選單的選項動態更改第二個下拉式選單的中的內容
  public void itemStateChanged(ItemEvent e)
  {

    /*
* 請同學將這一部份的程式碼撰寫出來
* (1)科別有更動時醫師的下拉式選單中的內容也要隨著動態更動。
* (2)醫師有更動時門診時段的下拉式選單中的內容也要隨著動態更動。
*/

    if(e.getSource() == chDep){
      String s = (String)e.getItem();
      chDr.removeAllItems();

      if(s.equals("內科")){
         chDr.addItem("令狐沖");
         chDr.addItem("任盈盈");
      }else if(s.equals("外科")){
         chDr.addItem("楊過");
         chDr.addItem("小龍女");
      }else if(s.equals("婦產科")){
         chDr.addItem("郭靖");
         chDr.addItem("黃蓉");
      }

    }
    else if(e.getSource() == chDr){
      String s = (String)e.getItem();
      chWeekDay.removeAllItems();
      if( s.equals("令狐沖")){
         String weekDay[]={"星期一早上","星期二晚上","星期三晚上","星期四下午","星期五晚上"};
         for(int i=0 ; i<weekDay.length ; i++ )       chWeekDay.addItem(weekDay[i]);
      }else if( s.equals("任盈盈")){
         String weekDay[]={"星期一下午","星期二早上","星期三下午","星期四早上","星期五下午"};
         for(int i=0 ; i<weekDay.length ; i++ )       chWeekDay.addItem(weekDay[i]);
      }else if( s.equals("楊過")){
         String weekDay[]={"星期一晚上","星期二晚上","星期三早上","星期四下午","星期五晚上"};
         for(int i=0 ; i<weekDay.length ; i++ )       chWeekDay.addItem(weekDay[i]);
      }else if( s.equals("小龍女")){
         String weekDay[]={"星期一下午","星期二早上","星期三晚上","星期四早上","星期五下午"};
         for(int i=0 ; i<weekDay.length ; i++ )       chWeekDay.addItem(weekDay[i]);
      }else if( s.equals("郭靖")){
         String weekDay[]={"星期一晚上","星期二下午","星期三晚上","星期四下午","星期五晚上"};
         for(int i=0 ; i<weekDay.length ; i++ )       chWeekDay.addItem(weekDay[i]);
      }else if( s.equals("黃蓉")){
         String weekDay[]={"星期一下午","星期二早上","星期三早上","星期四早上","星期五早上"};
         for(int i=0 ; i<weekDay.length ; i++ )       chWeekDay.addItem(weekDay[i]);
      }
   }
  }


  //建立一個 ActionListener 的 inner class
  class act implements ActionListener
  {
    public void actionPerformed(ActionEvent e)
    {
        if(e.getSource() == b2)
        {
           System.exit(0);
        }
        else if(e.getSource() == b1)
        {
           /*
* 請同學將這一部份的程式碼撰寫出來
* 讓程式可以顯示下列內容:
*
* ***先生您好
* 您掛的門診為：內科
* 門診時段為：星期一早上
* 為您看診的是：令狐沖醫師
*
*/
         ta.setText(   name.getText() + (String)chSex.getSelectedItem() + "您好\n" +
                  "您掛的門診為：" + (String)chDep.getSelectedItem() +"\n" +
                  "門診時段為：" + (String)chWeekDay.getSelectedItem() + "\n" +
                  "為您看診的是："+ (String)chDr.getSelectedItem() + "醫師\n"
                  );
         System.gc();
        }
    }
  }

  //讓視窗能夠正常關閉
  class WinListener extends WindowAdapter
  {
    public void windowClosing(WindowEvent e)
    {
      e.getWindow().dispose();
      System.exit(0);
    }
  }
}