大二上时用C语言写过一个关于航班信息查询与检索的课程设计，当时是自己抄代码，然后再让学长帮改的，前天晚上在“抄”代码时，突然想用java把那个课设题再写一次，于是昨天晚上就开始了，当然还是先在网上找了不少“成品”做参考，半借鉴，半修改，马马虎虎写了一个功能比较少的版本，以后再写更高版本的。
这个小程序的代码分为四个模块：主框架(MainWindow)，关于飞机航班号、起飞（目的）城市与起飞时间(Plane)，对航班信息的添加查询等操作(FlightInfoOperation)，以及对文件的处理(IOOperation)。
主窗口图：
添加窗口图：
查询窗口图：
（其中可以通过航班号、起飞城市任意一个查询或两者查询）
下面给出这个代码的部分代码：
FlightInfoOperation里的
public FlightInfoOperation() {mainFrame = new Frame("航班信息查询与检索");mainFrame.addWindowListener(new WindowAdapter() {public void windowClosing(WindowEvent e) {System.exit(0);}});mainFrame.setSize(WIDTH, HEIGHT);mainFrame.setVisible(true);Dimension frameSize = mainFrame.getSize();Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();mainFrame.setLocation((screenSize.width - frameSize.width) / 2,(screenSize.height - frameSize.height) / 2);buttonPanel = new Panel();mainFrame.add(buttonPanel, BorderLayout.NORTH);addButton = new Button("Add");addButton.addActionListener(this);searchButton = new Button("Search");searchButton.addActionListener(this);exitButton = new Button("Exit");exitButton.addActionListener(this);aboutButton = new Button("About");aboutButton.addActionListener(this);planeInfo = new TextArea();planeInfo.setFont(new Font("serif", Font.PLAIN, 18));buttonPanel.add(addButton);buttonPanel.add(searchButton);buttonPanel.add(exitButton);buttonPanel.add(aboutButton);mainFrame.add(planeInfo);/*** 添加飞机信息的窗口设置*/addFrame = new Frame();addFrame.addWindowListener(new WindowAdapter() {public void windowClosing(WindowEvent e) {addFrame.setVisible(false);}});inputLabPanel = new Panel(new GridLayout(4, 2));inputBtnPanel = new Panel();String[] inputLbName = { "airNum:", "StartCity:", "Destination:","FlightTime" };String[] inputBtnName = { "Save", "Delete", "Quit" };// Add窗口中各字段名称、按钮设置for (int i = 0; i < 4; i++) {inputLab[i] = new Label(inputLbName[i]);inputTf[i] = new TextField(15);inputLabPanel.add(inputLab[i]);inputLabPanel.add(inputTf[i]);}for (int i = 0; i < 3; i++) {inputBtn[i] = new Button(inputBtnName[i]);inputBtn[i].addActionListener(this);inputBtnPanel.add(inputBtn[i]);}inputBtn[2].setActionCommand("add");// 用来获取对象的标签或事先为这个对象设置的命令名addFrame.add(inputLabPanel, BorderLayout.CENTER);addFrame.add(inputBtnPanel, BorderLayout.SOUTH);addFrame.pack();addFrame.setLocationRelativeTo(mainFrame);/*** set searchFrame which is used to search plane information*/searchFrame = new Frame("Search plane");searchFrame.addWindowListener(new WindowAdapter() {public void windowClosing(WindowEvent e) {searchFrame.setVisible(false);}});schLabPanel = new Panel(new GridLayout(2, 2));schBtnPanel = new Panel();String schLabName[] = { "airNum :", "StartCity :" };String schBtnName[] = { "Ok", "Quit" };for (int i = 0; i < 2; i++) {schLab[i] = new Label(schLabName[i]);schTf[i] = new TextField(15);schLabPanel.add(schLab[i]);schLabPanel.add(schTf[i]);}for (int i = 0; i < 2; i++) {schBtn[i] = new Button(schBtnName[i]);schBtn[i].addActionListener(this);schBtnPanel.add(schBtn[i]);}schBtn[1].setActionCommand("search");searchFrame.add(schLabPanel, BorderLayout.CENTER);searchFrame.add(schBtnPanel, BorderLayout.SOUTH);searchFrame.pack();searchFrame.setLocationRelativeTo(mainFrame);/*** IO operation object*/ioo = new IOOperation();plane = ioo.getAllPlane();}
文件操作部分
public class IOOperation {private File file = new File("E:\\wenjianyuan\\info");public IOOperation() {try {if (!file.exists()) {file.createNewFile();}} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}/*** write to file*/public void write(Plane[] wPlane) {try {FileOutputStream fos = new FileOutputStream(file);ObjectOutputStream objOut = new ObjectOutputStream(fos);objOut.writeObject(wPlane);objOut.close();fos.close();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}/*** read all informations from the file*/public Plane[] getAllPlane() {Plane[] plane = new Plane[100];try {if (file.length() > 0) {FileInputStream fis = new FileInputStream(file);ObjectInputStream ois=new ObjectInputStream(fis);plane= (Plane[]) ois.readObject();ois.close();fis.close();}} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return plane;}}
感兴趣的朋友可以到：/detail/yanghai0321/4185470下载完整代码。
