JAVA車票管理系統(簡單GUI)

一．    需求分析

1.設計題目：車票管理系統

用JAVA語言和數據結構知識設計設計車票管理系統。要求以下所述：

一車站天天有n個發車班次，每一個班次都有一個班次號（一、二、3…n），固定的發車時間，固定的路線（起始站、終點站），大體的行車時間，固定的額定載客量。如：

班次   發車時間   起點站   終點站   行車時間   額定載量    已定票人數

1      8:00       武漢      廣州     2           45            30

2      6:30       武漢      成都     3           40            40
3      7:00       武漢      成都     3           40            20

4      10:00      武漢      成都     3           40            2

…

根據以上狀況設計出相應的車票管理系統，具體功能以下：

1)   錄入功能

錄入班次信息，可不定時地增長班次數據

2)   瀏覽功能

瀏覽班次信息，可顯示出全部班次當前情況(若是當前系統時間超過了某班次的發車時間，則顯示「此班已發出」的提示信息)。

3)   查詢功能

查詢路線：可按班次號查詢，可按終點站查詢。

4)   售票功能

當查詢出已定票人數小於額定載量且當前系統時間小於發車時間時才能售票，自動更新已售票人數。

5)   退票功能

退票時，輸入退票的班次，當本班車未發出時才能退票，自動更新已售票人數。

6)   文件保存

可自行增長其餘符合業務邏輯的功能

2.設計要求

a.根據題目功能需求，本身定義合適的存儲結構、類、參數等；

b.提供友好的用戶界面，方便用戶操做。

3. 系統功能需求分析

a. 錄入班次信息，可不定時地增長班次數據。

b. 瀏覽班次信息，可顯示出全部班次當前情況(若是當前系統時間超過了某班次的發車時間，則顯示「此班已發出」的提示信息)。

c. 查詢路線：可按班次號查詢，可按終點站查詢。

d. 當查詢出已定票人數小於額定載量且當前系統時間小於發車時間時才能售票，自動更新已售票人數。

f. 退票時，輸入退票的班次，當本班車未發出時才能退票，自動更新已售票人數。

二．概要設計

1.系統整體設計框架。

 

2. 系統功能模塊圖。

 

三.詳細設計

 

四．主要源程序代碼

主界面：

public class TrainTicket extends JFrame implements ActionListener{

    JButton Add, ViewAll, Serach, SellTicket,ReturnTicket, Delete;
    TicketAdd Add_method;
    TicketAdd2 Add2_method;
    TicketViewAll ViewAll_method;
    TicketSerach Serach_method;
    TicketReturn Return_method;
    TicketSell Sell_method;
    TicketDelete Delete_method;

    public static final List<Train> TrainList = new ArrayList<Train>();

    public TrainTicket(){

        try {
            FileWriter out = new FileWriter("word.txt");
            out.close();
        } catch (IOException e) {
        }

        setBounds(400, 100, 700, 500);
        JPanel panel = new JPanel();
        setContentPane(panel);
        panel.setLayout(null);
        JLabel label = new JLabel("歡迎進入車票管理系統");
        label.setFont(new Font("BOLD", Font.BOLD, 28));
        panel.add(label);
        label.setBounds(200, 20, 400, 100);

        Add = new JButton("錄入");
        panel.add(Add);
        Add.setBounds(50,200,80,50);

        ViewAll = new JButton("瀏覽");
        panel.add(ViewAll);
        ViewAll.setBounds(150,200,80,50);

        Serach = new JButton("查詢");
        panel.add(Serach);
        Serach.setBounds(250,200,80,50);

        SellTicket = new JButton("售票");
        panel.add(SellTicket);
        SellTicket.setBounds(350,200,80,50);

        ReturnTicket = new JButton("退票");
        panel.add(ReturnTicket);
        ReturnTicket.setBounds(450,200,80,50);

        Delete = new JButton("刪除");
        panel.add(Delete);
        Delete.setBounds(550,200,80,50);

        Add.addActionListener(this);
        ViewAll.addActionListener(this);
        Serach.addActionListener(this);
        SellTicket.addActionListener(this);
        ReturnTicket.addActionListener(this);
        Delete.addActionListener(this);
        setVisible(true);

    }
    public static void main(String[] args){
        TrainTicket kk = new TrainTicket();

    }
    @Override
    public void actionPerformed(ActionEvent e) {
        // TODO Auto-generated method stub
        if(e.getSource() == Add)
            Add2_method = new TicketAdd2();
        if(e.getSource() == ViewAll)
            ViewAll_method = new TicketViewAll();
        if(e.getSource() == Serach)
            Serach_method = new TicketSerach();
        if(e.getSource() == SellTicket)
            Sell_method = new TicketSell();
        if(e.getSource() == ReturnTicket)
            Return_method = new TicketReturn();
        if(e.getSource() == Delete)
            Delete_method = new TicketDelete();
    }
}

View Code

錄入班次信息：

public class TicketAdd extends JFrame implements ActionListener{

    JTextField NumText, TimeText, StartText, EndText, DuringText, MaxText, PersonText;

    File file = new File("word.txt");

    JButton b1, b2, b3;

    private String Num, Time, Start, End, During, Max, Have,Person;

    public TicketAdd() {
        Container c = this.getContentPane();
        c.setLayout(null);
        JLabel label = new JLabel("錄入班次信息");
        label.setFont(new Font("TRUE", Font.TRUETYPE_FONT, 20));
        label.setBounds(190, 15, 500, 100);
        c.add(label);
        NumText = new JTextField(15);
        NumText.setBounds(220, 115, 125, 15);
        TimeText = new JTextField(15);
        TimeText.setBounds(220, 140, 125, 15);
        StartText = new JTextField(15);
        StartText.setBounds(220, 165, 125, 15);
        EndText = new JTextField(15);
        EndText.setBounds(220, 190, 125, 15);
        DuringText = new JTextField(15);
        DuringText.setBounds(220, 215, 125, 15);
        MaxText = new JTextField(15);
        MaxText.setBounds(220, 240, 125, 15);
        PersonText = new JTextField(15);
        PersonText.setBounds(220, 265, 125, 15);

        c.add(NumText);
        c.add(TimeText);
        c.add(StartText);
        c.add(EndText);
        c.add(DuringText);
        c.add(MaxText);
        c.add(PersonText);

        JLabel label1 = new JLabel("班次");
        label1.setBounds(150, 72, 100, 100);
        JLabel label2 = new JLabel("發車時間");
        label2.setBounds(150, 97, 500, 100);
        JLabel label3 = new JLabel("起點站");
        label3.setBounds(150, 122, 500, 100);
        JLabel label4 = new JLabel("終點站");
        label4.setBounds(150, 147, 500, 100);
        JLabel label5 = new JLabel("行車時間");
        label5.setBounds(150, 172, 500, 100);
        JLabel label6 = new JLabel("載定額量");
        label6.setBounds(150, 197, 500, 100);
        JLabel label7 = new JLabel("已訂票人數");
        label7.setBounds(150, 222, 500, 100);

        c.add(label1);
        c.add(label2);
        c.add(label3);
        c.add(label4);
        c.add(label5);
        c.add(label6);
        c.add(label7);


        b1 = new JButton("錄入");
        b1.setBounds(100, 300, 100, 30);
        b2 = new JButton("清除");
        b2.setBounds(200, 300, 100, 30);
        b3 = new JButton("退出");
        b3.setBounds(300, 300, 100, 30);

        c.add(b1);
        c.add(b2);
        c.add(b3);

        b1.addActionListener(this);
        b2.addActionListener(this);
        b3.addActionListener(this);
        this.setBounds(400, 100, 500, 500);
        this.setVisible(true);
        this.setTitle("錄入班次信息");
    }

    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == b1) {
            addFI();
        }
        if (e.getSource() == b2) {
            clearForm();
        }
        if (e.getSource() == b3) {
            shutdown();
        }
    }

    private void addFI() {
        Num = NumText.getText();
        Time = TimeText.getText();
        Start = StartText.getText();
        End = EndText.getText();
        During = DuringText.getText();
        Max = MaxText.getText();
        Person = PersonText.getText();

        if (Num.length() == 0 || Time.length() == 0 || Start.length() == 0
                || End.length() == 0 || During.length() == 0 || Max.length() == 0
                || Person.length() == 0)
            JOptionPane.showMessageDialog(this, "請添加完整信息");
        else {
            
            if(Integer.valueOf(Person) > Integer.valueOf(Max))
                JOptionPane.showMessageDialog(this, "已訂票人數應不大於額定載量");
            else
            {
                File_Reader("word.txt",Num,Time,Start,End,During,Max,Person);
                Train kk = new Train(Num,Time,Start,End,During,Max,Person);
                boolean flag = true;
                for(Iterator<Train> iter = TrainTicket.TrainList.iterator(); iter.hasNext();)
                {
                    Train s = iter.next();

                    if(s.getNum().equals(Num) && s.getTime().equals(Time)
                            && s.getStart().equals(Start) && s.getEnd().equals(End)
                            && s.getDuring().equals(During) && s.getMax().equals(Max)
                            && s.getPerson().equals(Person))
                    {
                        flag = false;
                        JOptionPane.showMessageDialog(this, "錄入班次信息重複");
                    }
                }
                if(flag)
                {
                    TrainTicket.TrainList.add(kk);
                    JOptionPane.showMessageDialog(this, "錄入班次信息成功");
                }
            }
        }

    }

    private void clearForm() {
        NumText.setText("");
        TimeText.setText("");
        StartText.setText("");
        EndText.setText("");
        DuringText.setText("");
        MaxText.setText("");
        PersonText.setText("");
    }

    private void shutdown() {
        this.dispose();

    }
    public static void File_Reader(String fileName, String num, String Time,
            String Start,String End,String During,String Max,String Person) {   
        
        FileWriter writer = null;  
        
        try {     
            // 打開一個寫文件器，構造函數中的第二個參數true表示以追加形式寫文件     
            writer = new FileWriter(fileName, true);     
            writer.write(num+"  ");
            writer.write(Time+"  ");
            writer.write(Start+"  ");
            writer.write(End+"  ");
            writer.write(During+"  ");
            writer.write(Max+"  ");
            writer.write(Person+"\r\n");
        } catch (IOException e) {     
            e.printStackTrace();     
        } finally {     
            try {     
                if(writer != null){  
                    writer.close();     
                }  
            } catch (IOException e) {     
                e.printStackTrace();     
            }     
        }   
    }   
}

View Code

瀏覽班次信息：

public class TicketViewAll extends JFrame{
    
    public TicketViewAll(){
    Container c = this.getContentPane();
    c.setLayout(new GridLayout(2, 1));
    JPanel title = new JPanel(new GridLayout(1, 8));
    JLabel Num = new JLabel("班次",SwingConstants.CENTER);
    JLabel Time = new JLabel("發車時間",SwingConstants.CENTER);
    JLabel Start = new JLabel("起點站",SwingConstants.CENTER);
    JLabel End = new JLabel("終點站",SwingConstants.CENTER);
    JLabel During = new JLabel("行車時間",SwingConstants.CENTER);
    JLabel Max = new JLabel("額定載量",SwingConstants.CENTER);
    JLabel Person = new JLabel("已定票人數",SwingConstants.CENTER);
    JLabel Have = new JLabel("是否有票",SwingConstants.CENTER);
    
    title.add(Num);
    title.add(Time);
    title.add(Start);
    title.add(End);
    title.add(During);
    title.add(Max);
    title.add(Person);
    title.add(Have);
    

    JPanel content1 = new JPanel(new GridLayout(TrainTicket.TrainList.size(), 8));
    
    for(int i = 0; i < TrainTicket.TrainList.size(); i++)
    {
        JLabel Temp1 = new JLabel(TrainTicket.TrainList.get(i).getNum(),SwingConstants.CENTER);
        SimpleDateFormat df = new SimpleDateFormat("HH:mm:ss");//設置日期格式
        JLabel Temp2;
        if(df.format(new Date()).compareTo(TrainTicket.TrainList.get(i).getTime()) < 0)
        {
             Temp2 = new JLabel(TrainTicket.TrainList.get(i).getTime(),SwingConstants.CENTER);
        }
        else
             Temp2 = new JLabel("此班已發出",SwingConstants.CENTER);
        JLabel Temp3 = new JLabel(TrainTicket.TrainList.get(i).getStart(),SwingConstants.CENTER);
        JLabel Temp4 = new JLabel(TrainTicket.TrainList.get(i).getEnd(),SwingConstants.CENTER);
        JLabel Temp5 = new JLabel(TrainTicket.TrainList.get(i).getDuring(),SwingConstants.CENTER);
        JLabel Temp6 = new JLabel(TrainTicket.TrainList.get(i).getMax(),SwingConstants.CENTER);
        JLabel Temp7 = new JLabel(TrainTicket.TrainList.get(i).getPerson()+"",SwingConstants.CENTER);
        JLabel Temp8;
        if(df.format(new Date()).compareTo(TrainTicket.TrainList.get(i).getTime()) < 0
                && (Integer.valueOf(TrainTicket.TrainList.get(i).getMax()).intValue() > 
                Integer.valueOf(TrainTicket.TrainList.get(i).getPerson())))
         Temp8 = new JLabel("是",SwingConstants.CENTER);
        else
         Temp8 = new JLabel("否",SwingConstants.CENTER);
        
        content1.add(Temp1);
        content1.add(Temp2);
        content1.add(Temp3);
        content1.add(Temp4);
        content1.add(Temp5);
        content1.add(Temp6);
        content1.add(Temp7);
        content1.add(Temp8);
    }
    
    JScrollPane content2 = new JScrollPane(content1);

    c.add(title);
    c.add(content2);
    this.setBounds(200, 200, 800, 400);
    this.setVisible(true);
    this.setTitle("瀏覽班次信息");
    }
    
    public TicketViewAll(String num){
        Container c = this.getContentPane();
        c.setLayout(new GridLayout(2, 1));
        JPanel title = new JPanel(new GridLayout(1, 8));
        JLabel Num = new JLabel("班次",SwingConstants.CENTER);
        JLabel Time = new JLabel("發車時間",SwingConstants.CENTER);
        JLabel Start = new JLabel("起點站",SwingConstants.CENTER);
        JLabel End = new JLabel("終點站",SwingConstants.CENTER);
        JLabel During = new JLabel("行車時間",SwingConstants.CENTER);
        JLabel Max = new JLabel("額定載量",SwingConstants.CENTER);
        JLabel Person = new JLabel("已定票人數",SwingConstants.CENTER);
        
        title.add(Num);
        title.add(Time);
        title.add(Start);
        title.add(End);
        title.add(During);
        title.add(Max);
        title.add(Person);
        
        int cnt = 0;
        
        for(int i = 0; i < TrainTicket.TrainList.size(); i++)
        {
            if(TrainTicket.TrainList.get(i).getNum().equals(num) || TrainTicket.TrainList.get(i).getEnd().equals(num))
                cnt++;
        }
        JPanel content1 = new JPanel(new GridLayout(cnt, 7));
        
        for(int i = 0; i < TrainTicket.TrainList.size(); i++)
        {
            if(TrainTicket.TrainList.get(i).getNum().equals(num) || TrainTicket.TrainList.get(i).getEnd().equals(num))
            {
                JLabel Temp1 = new JLabel(TrainTicket.TrainList.get(i).getNum(),SwingConstants.CENTER);
            SimpleDateFormat df = new SimpleDateFormat("HH:mm:ss");//設置日期格式
            JLabel Temp2;
            if(df.format(new Date()).compareTo(TrainTicket.TrainList.get(i).getTime()) < 0)
            {
                 Temp2 = new JLabel(TrainTicket.TrainList.get(i).getTime(),SwingConstants.CENTER);
            }
            else
                 Temp2 = new JLabel("此班已發出",SwingConstants.CENTER);
            JLabel Temp3 = new JLabel(TrainTicket.TrainList.get(i).getStart(),SwingConstants.CENTER);
            JLabel Temp4 = new JLabel(TrainTicket.TrainList.get(i).getEnd(),SwingConstants.CENTER);
            JLabel Temp5 = new JLabel(TrainTicket.TrainList.get(i).getDuring(),SwingConstants.CENTER);
            JLabel Temp6 = new JLabel(TrainTicket.TrainList.get(i).getMax(),SwingConstants.CENTER);
            JLabel Temp7 = new JLabel(TrainTicket.TrainList.get(i).getPerson()+"",SwingConstants.CENTER);
            JLabel Temp8;
            if(df.format(new Date()).compareTo(TrainTicket.TrainList.get(i).getTime()) < 0
                    && (Integer.valueOf(TrainTicket.TrainList.get(i).getMax()).intValue() > 
                    Integer.valueOf(TrainTicket.TrainList.get(i).getPerson())))
             Temp8 = new JLabel("是",SwingConstants.CENTER);
            else
             Temp8 = new JLabel("否",SwingConstants.CENTER);
            content1.add(Temp1);
            content1.add(Temp2);
            content1.add(Temp3);
            content1.add(Temp4);
            content1.add(Temp5);
            content1.add(Temp6);
            content1.add(Temp7);
            content1.add(Temp8);
            }
        }
        
        JScrollPane content2 = new JScrollPane(content1);
        c.add(title);
        c.add(content2);
        
        this.setBounds(200, 200, 800, 400);
        this.setVisible(true);
        this.setTitle("瀏覽班次信息");
        }



}

View Code

查詢：

public class TicketSerach extends JFrame implements ActionListener{
    
    private String Num, End;
    
    JButton SearchNum, SearchEnd;
    JTextField NumSearch,EndSearch;
    
    TicketViewAll ff;
    public TicketSerach(){
    Container c = this.getContentPane();
    c.setLayout(null);
    
    
    SearchNum = new JButton("按班次查詢");
    SearchNum.setBounds(165, 100, 120, 30);
    SearchEnd = new JButton("按終點站查詢");
    SearchEnd.setBounds(165, 150, 120, 30);
    
    
    NumSearch = new JTextField(15);
    NumSearch.setBounds(295, 100, 120, 30);
    EndSearch = new JTextField(15);
    EndSearch.setBounds(295, 150, 120, 30);
    c.add(SearchNum);
    c.add(NumSearch);
    c.add(SearchEnd);
    c.add(EndSearch);
    
    this.setBounds(200, 200, 600, 400);
    this.setVisible(true);
    this.setTitle("錄入班次信息");
    
    SearchNum.addActionListener(this);
    SearchEnd.addActionListener(this);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        // TODO Auto-generated method stub
        if(e.getSource() == SearchNum)
            ff = new TicketViewAll(NumSearch.getText());
        if(e.getSource() == SearchEnd)
            ff = new TicketViewAll(EndSearch.getText());
        
    }

}

View Code

售票：

public class TicketSell extends JFrame implements ActionListener{

    JLabel SearchNum, BuyNum;
    JTextField NumSearch, NumBuy;
    JButton Sell;
    
    private String num, buyNum;
    private int Buynum;

    public TicketSell(){
        Container c = this.getContentPane();
        c.setLayout(null);


        SearchNum = new JLabel("請輸入班次");
        SearchNum.setBounds(165, 100, 120, 30);
        NumSearch = new JTextField(15);
        NumSearch.setBounds(295, 100, 120, 30);

        BuyNum = new JLabel("請輸入購票數量");
        BuyNum.setBounds(165, 150, 120, 30);
        NumBuy = new JTextField(15);
        NumBuy.setBounds(295, 150, 120, 30);
        
        Sell = new JButton("購票");
        Sell.setBounds(239, 200, 120, 30);
        
        c.add(SearchNum);
        c.add(NumSearch);
        c.add(BuyNum);
        c.add(NumBuy);
        c.add(Sell);

        Sell.addActionListener(this);

        this.setBounds(400, 100, 600, 400);
        this.setVisible(true);
        this.setTitle("售票");
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        // TODO Auto-generated method stub

        if(e.getSource() == Sell)
        {
            num = NumSearch.getText();
            buyNum = NumBuy.getText();
            
            if (num.length() == 0 || buyNum.length() == 0)
                JOptionPane.showMessageDialog(this, "請添加完整信息");
            else
            {
                
            Buynum = Integer.valueOf(buyNum);
            boolean flag = true;
            SimpleDateFormat df = new SimpleDateFormat("HH:mm");
            
            int res = 0;
            for(int i = 0; i < TrainTicket.TrainList.size(); i++)
            {
                if(df.format(new Date()).compareTo(TrainTicket.TrainList.get(i).getTime()) < 0 
                        && TrainTicket.TrainList.get(i).getNum().equals(num))
                {
                    flag = false;
                    int temp = Integer.valueOf(TrainTicket.TrainList.get(i).Person);
                    res  = Integer.valueOf(TrainTicket.TrainList.get(i).getMax()) - temp;
                    temp = temp+Buynum;
                    if(temp > Integer.valueOf(TrainTicket.TrainList.get(i).getMax()))
                        {
                        TrainTicket.TrainList.get(i).Person = Integer.valueOf(TrainTicket.TrainList.get(i).getMax()) + "";
                        flag = true;
                        break;
                        }
                    else
                        TrainTicket.TrainList.get(i).Person = temp + "";
                    JOptionPane.showMessageDialog(this, "售票成功");
                    break;
                }
            }
            if(flag)
            {
                String Res = res + "";
                JOptionPane.showMessageDialog(this, "售票失敗,剩餘票數"+Res);
            }
            else
                JOptionPane.showMessageDialog(this, "售票失敗,該班次已發出或不存在該班次");
            
            }
        }
    }
}

View Code

退票：

public class TicketReturn extends JFrame implements ActionListener{

    JLabel SearchNum, ReturnNum;
    JTextField NumSearch, NumReturn;
    JButton Return;

    private String num, returnNum;
    private int Returnnum;

    public TicketReturn(){
        Container c = this.getContentPane();
        c.setLayout(null);


        SearchNum = new JLabel("請輸入班次");
        SearchNum.setBounds(165, 100, 120, 30);
        NumSearch = new JTextField(15);
        NumSearch.setBounds(295, 100, 120, 30);

        ReturnNum = new JLabel("請輸入退票數量");
        ReturnNum.setBounds(165, 150, 120, 30);
        NumReturn = new JTextField(15);
        NumReturn.setBounds(295, 150, 120, 30);

        Return = new JButton("退票");
        Return.setBounds(239, 200, 120, 30);

        c.add(SearchNum);
        c.add(NumSearch);
        c.add(ReturnNum);
        c.add(NumReturn);
        c.add(Return);

        Return.addActionListener(this);

        this.setBounds(200, 200, 600, 400);
        this.setVisible(true);
        this.setTitle("退票");
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        // TODO Auto-generated method stub

        if(e.getSource() == Return)
        {
            num = NumSearch.getText();
            returnNum = NumReturn.getText();

            if (num.length() == 0 || returnNum.length() == 0)
                JOptionPane.showMessageDialog(this, "請添加完整信息");
            else
            {
                Returnnum = Integer.valueOf(returnNum);
                boolean flag = true;
                int res = 0;

                SimpleDateFormat df = new SimpleDateFormat("HH:mm");

                for(int i = 0; i < TrainTicket.TrainList.size(); i++)
                {
                    if(df.format(new Date()).compareTo(TrainTicket.TrainList.get(i).getTime()) < 0 
                            && TrainTicket.TrainList.get(i).getNum().equals(num))
                    {
                        flag = false;
                        int temp = Integer.valueOf(TrainTicket.TrainList.get(i).Person);
                        temp = temp-Returnnum;
                        if(temp < 0)
                        {
                            TrainTicket.TrainList.get(i).Person = 0 + "";
                            flag = true;
                            break;
                        }
                        else
                            TrainTicket.TrainList.get(i).Person = temp + "";
                        JOptionPane.showMessageDialog(this, "退票成功");
                        break;
                    }
                }
                if(flag)
                    JOptionPane.showMessageDialog(this, "退票失敗");
            }
        }
    }
}

View Code

 

刪除：

public class TicketDelete extends JFrame implements ActionListener{

    JButton DeleteNum;
    JTextField NumDelete;
    JLabel Num;
    private String num;

    public TicketDelete(){
        Container c = this.getContentPane();
        c.setLayout(null);


        DeleteNum = new JButton("按班次刪除");
        DeleteNum.setBounds(165, 100, 120, 30);
        NumDelete = new JTextField(15);
        NumDelete.setBounds(295, 100, 120, 30);

        c.add(DeleteNum);
        c.add(NumDelete);

        DeleteNum.addActionListener(this);

        this.setBounds(200, 200, 600, 400);
        this.setVisible(true);
        this.setTitle("刪除班次信息");
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        // TODO Auto-generated method stub
        
        if(e.getSource() == DeleteNum)
        {
            num = NumDelete.getText();
            boolean flag = true;
            for(Iterator<Train> iter = TrainTicket.TrainList.iterator(); iter.hasNext();)
            {
                Train s = iter.next();

                if(s.getNum().equals(num))
                {
                    TrainTicket.TrainList.remove(s);
                    JOptionPane.showMessageDialog(this, "刪除班次信息成功");
                    flag = false;
                    break;
                }
            }
            if(flag)
                JOptionPane.showMessageDialog(this, "班次信息不存在");

        }
    }
}

View Code