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我有一个Java项目，编译它之后，我得到2个警告：的java：classname.java使用未经检查或不安全的操作
java: filepath\filename.java uses unchecked or unsafe operations.
java: Recompile with -Xlint:unchecked for details.
这里是类的代码：
public class GuiMain extends javax.swing.JFrame {
/**
* Don't use parameters because of windows 7.
*/
public static final boolean USE_PARAMETERS = false;
/**
* The refresh rate of the traffic screen capturing.
*/
private static int TRAFFIC_REFRESH_RATE = 0;
private static final long serialVersionUID = -2417685564943832874L;
private static final String CLIENT_NAME = "Traffic Analysis";
private static final String OUTPUT_FILE = "last_session_results.txt";
private JPanel pMainMenu = null;
private JPanel pInput = null;
private JButton btCreate = null;
private JTextField tfInput = null;
private JTextField tfCoordinates = null;
private JPanel pObserve = null;
private JScrollPane spObserve = null;
private JTable tblObserve = null;
private TrafficObserveModel modelObserve = null;
private JButton btAddObserver = null;
private JButton btDelObserver = null;
private JButton btObserving = null;
private JPanel pPaint = null;
private ImagePanel imagePanel = null;
private JButton btTrafficObserver = null;
private JComboBox cobSections = null;
private JButton btNewSection = null;
private JButton btDelSection = null;
private JButton btUndo = null;
private JButton btSave = null;
private JLabel lTimeInterval=null;//moe
private JTextField tfInputTinter=null;//moe
private JPanel pInputTime=null; //moe
private KeyListener keyListener ; //moe
private boolean observeTrafficView = false;
private boolean currentlyObserving = false;
private String curFileName = "";
private MapSection mapSection = null;
private ScreenCaptureController screenCapturing = null;
private Vector<Section> observeTraffic = new Vector<Section>();
private BufferedImage lineImage = null;
public GuiMain() {
super();
try {
// Create or delete content from the output file.
BufferedWriter bw = new BufferedWriter(new FileWriter("." + ToolKit.fileSeparator() + OUTPUT_FILE));
bw.close();
// Create the "maps" directory if it doesn't exist.
File mapsFile = new File("maps");
if(!mapsFile.exists()) {
if(!mapsFile.mkdir()) {
System.out.println("Couldn't create maps directory.");
}
}
} catch (IOException e) {
e.printStackTrace();
}
screenCapturing = new ScreenCaptureController(this);
screenCapturing.addScreenCaptureListener(new ScreenCaptureController.ScreenCaptureListener() {
public void capturedScreen() {
if(currentlyObserving) {
ImageAnalysis analysis = new ImageAnalysis();
int traffic[] = analysis.colorShare(screenCapturing.getMapTrafficOnly(), lineImage);
try {
// Write the results to the file.
PrintWriter out = new PrintWriter(new BufferedWriter(
new FileWriter("." + ToolKit.fileSeparator() + OUTPUT_FILE, true)));
out.println(traffic[0] + " - " + traffic[1] + " - " + traffic[2] + " - " + traffic[3]);
out.close();
} catch (IOException e) {
e.printStackTrace();
}
} else {
showImage(screenCapturing.getMapTraffic());
}
}
});
initMainMenu();
initGUI();
}
private void initGUI() {
try {
BorderLayout thisLayout = new BorderLayout();
this.addWindowListener(new java.awt.event.WindowAdapter() {
public void windowClosing(WindowEvent e) {
shutDown(e);
}
});
getContentPane().setLayout(thisLayout);
{
pPaint = new JPanel();
//getContentPane().add(pPaint, BorderLayout.NORTH);
GridBagLayout pPaintLayout = new GridBagLayout();
pPaintLayout.columnWidths = new int[] {7, 7, 7, 7, 7};
pPaintLayout.rowHeights = new int[] {25};
pPaintLayout.columnWeights = new double[] {100.0, 0.1, 0.1, 0.1, 0.1};
pPaintLayout.rowWeights = new double[] {0.1};
pPaint.setLayout(pPaintLayout);
{
cobSections = new JComboBox();
cobSections.setRenderer(new MapSectionItemRenderer());
pPaint.add(cobSections, new GridBagConstraints(0, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL,
new Insets(0, 0, 0, 0), 0, 0));
cobSections.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
cobSectionsActionPerformed(evt);
}
});
}
{
btUndo = new JButton();
pPaint.add(btUndo, new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.CENTER, GridBagConstraints.NONE,
new Insets(0, 5, 0, 0), 0, 0));
btUndo.setText("Undo");
btUndo.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
btUndoActionPerformed(evt);
}
});
}
{
btSave = new JButton();
pPaint.add(btSave, new GridBagConstraints(2, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.CENTER, GridBagConstraints.NONE,
new Insets(0, 5, 0, 0), 0, 0));
btSave.setText("Save");
btSave.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
btSaveActionPerformed(evt);
}
});
}
{
btNewSection = new JButton();
pPaint.add(btNewSection, new GridBagConstraints(3, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.CENTER, GridBagConstraints.NONE,
new Insets(0, 10, 0, 0), 0, 0));
btNewSection.setText("+ Section");
btNewSection.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
btNewSectionActionPerformed(evt);
}
});
}
{
lTimeInterval = new JLabel("T_interval (ms)");
lTimeInterval.setVisible(false);
pPaint.add(lTimeInterval, new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.CENTER, GridBagConstraints.NONE,
new Insets(0, 5, 0, 0), 0, 0));
}
{
btDelSection = new JButton();
pPaint.add(btDelSection, new GridBagConstraints(4, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.CENTER, GridBagConstraints.NONE,
new Insets(0, 5, 0, 0), 0, 0));
btDelSection.setText("- Section");
btDelSection.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
btDelSectionActionPerformed(evt);
}
});
}
{
tfInputTinter = new JTextField(3);
tfInputTinter.setVisible(false);
pPaint.add(tfInputTinter, new GridBagConstraints(2, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.CENTER, GridBagConstraints.NONE,
new Insets(0, 5, 0, 0), 0, 0));
}
imagePanel = new ImagePanel(mapSection);
getContentPane().add(pMainMenu, BorderLayout.CENTER);
btTrafficObserver = new JButton("Traffic Observation");
btTrafficObserver.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
onTrafficObserverClicked(e);
}
});
//getContentPane().add(btTrafficObserver, BorderLayout.SOUTH);
pObserve = new JPanel();
BorderLayout pObserveLayout = new BorderLayout();
pObserve.setLayout(pObserveLayout);
{
JPanel pObserverButtons = new JPanel(new BorderLayout());
{
btAddObserver = new JButton("Add");
pObserverButtons.add(btAddObserver, BorderLayout.WEST);
btAddObserver.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
btAddObserverActionPerformed(evt);
}
});
}
{
btDelObserver = new JButton("Remove");
pObserverButtons.add(btDelObserver, BorderLayout.EAST);
btDelObserver.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
btDelObserverActionPerformed(evt);
}
});
}
pObserve.add(pObserverButtons, BorderLayout.NORTH);
spObserve = new JScrollPane();
spObserve.setPreferredSize(new Dimension(150, 100));
modelObserve = new TrafficObserveModel();
tblObserve = new JTable(modelObserve);
tblObserve.setDefaultRenderer(Section.class, new TrafficObserveRenderer());
tblObserve.getColumnModel().getColumn(0).setPreferredWidth(100);
tblObserve.setIntercellSpacing(new Dimension(0, 0));
tblObserve.setRowSelectionAllowed(true);
tblObserve.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION); // moe bese sigle- selection
spObserve.setViewportView(tblObserve);
pObserve.add(spObserve, BorderLayout.CENTER);
btObserving = new JButton("Observe Traffic");
pObserve.add(btObserving, BorderLayout.SOUTH);
btObserving.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
btObservingActionPerformed(evt);
}
});
}
//getContentPane().add(pObserve, BorderLayout.EAST);
}
pack();
setSize(320, 130);
setTitle(CLIENT_NAME);
setLocationRelativeTo(null);
setVisible(false);
} catch (Exception e) {
//add your error handling code here
e.printStackTrace();
}
}
private void initMainMenu() {
try {
BorderLayout thisLayout = new BorderLayout();
pMainMenu = new JPanel();
pMainMenu.setLayout(thisLayout);
{
JPanel pButtons = new JPanel();
pMainMenu.add(pButtons, BorderLayout.NORTH);
GridBagLayout pButtonsLayout = new GridBagLayout();
pButtonsLayout.columnWidths = new int[] {7, 7, 7};
pButtonsLayout.rowHeights = new int[] {25};
pButtonsLayout.columnWeights = new double[] {0.1, 0.1, 0.1};
pButtonsLayout.rowWeights = new double[] {0.1};
pButtons.setLayout(pButtonsLayout);
{
JButton btLoad = new JButton();
pButtons.add(btLoad, new GridBagConstraints(0, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.CENTER, GridBagConstraints.NONE,
new Insets(0, 5, 0, 0), 0, 0));
btLoad.setText("Load");
btLoad.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
btLoadActionPerformed(evt);
}
});
}
{
JButton btView = new JButton();
pButtons.add(btView, new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.CENTER, GridBagConstraints.NONE,
new Insets(0, 5, 0, 0), 0, 0));
btView.setText("View");
btView.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
btViewActionPerformed(evt);
}
});
}
{
JButton btNew = new JButton();
pButtons.add(btNew, new GridBagConstraints(2, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.CENTER, GridBagConstraints.NONE,
new Insets(0, 5, 0, 0), 0, 0));
btNew.setText("New");
btNew.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
btNewActionPerformed(evt);
}
});
}
pInput = new JPanel();
pInput.setVisible(false);
pMainMenu.add(pInput, BorderLayout.CENTER);
GridBagLayout pInputLayout = new GridBagLayout();
pInputLayout.columnWidths = new int[] {7, 7};
pInputLayout.rowHeights = new int[] {25};
pInputLayout.columnWeights = new double[] {0.1, 100.0};
pInputLayout.rowWeights = new double[] {0.1, 100.0};
pInput.setLayout(pInputLayout);
{
JLabel lName = new JLabel("Name");
pInput.add(lName, new GridBagConstraints(0, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.EAST, GridBagConstraints.NONE,
new Insets(0, 5, 0, 0), 0, 0));
}
{
tfInput = new JTextField();
pInput.add(tfInput, new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL,
new Insets(0, 5, 0, 0), 0, 0));
}
{
JLabel lCoordinates = new JLabel("Coordinates");
pInput.add(lCoordinates, new GridBagConstraints(0, 1, 1, 1, 0.0, 0.0,
GridBagConstraints.EAST, GridBagConstraints.NONE,
new Insets(0, 5, 0, 0), 0, 0));
}
{
tfCoordinates = new JTextField();
pInput.add(tfCoordinates, new GridBagConstraints(1, 1, 1, 1, 0.0, 0.0,
GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL,
new Insets(0, 5, 0, 0), 0, 0));
}
btCreate = new JButton("Create");
btCreate.setVisible(false);
btCreate.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
btCreateActionPerformed(evt);
}
});
pMainMenu.add(btCreate, BorderLayout.SOUTH);
}
} catch (Exception e) {
//add your error handling code here
e.printStackTrace();
}
}
public void showImage(BufferedImage curImage) {
imagePanel.setImage(curImage, mapSection);
setSize(curImage.getWidth(), curImage.getHeight() + 80);
setLocationRelativeTo(null);
}
private void showTrafficMap() {
if(mapSection != null) {
screenCapturing.setMapSection(mapSection);
if(screenCapturing.captureBaseMap()) {
try {
getContentPane().remove(pMainMenu);
getContentPane().add(pPaint, BorderLayout.NORTH);
getContentPane().add(imagePanel, BorderLayout.CENTER);
getContentPane().add(btTrafficObserver, BorderLayout.SOUTH);
cobSections.setModel(new DefaultComboBoxModel(mapSection.getModel()));
if(mapSection.getModel().size() > 0) {
cobSections.setSelectedIndex(0);
}
validate();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
private void shutDown(WindowEvent e) {
if(mapSection != null && curFileName != "") {
XMLManager.writeFile(curFileName, mapSection);
}
System.exit(0);
}
private void btSaveActionPerformed(ActionEvent evt) {
if(mapSection != null && curFileName != "") {
XMLManager.writeFile(curFileName, mapSection);
}
}
private void btLoadActionPerformed(ActionEvent evt) {
JFileChooser chooser = new JFileChooser();
chooser.setCurrentDirectory(new java.io.File("maps"));
chooser.setDialogTitle("Select Map");
chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
// disable the "All files" option.
chooser.setAcceptAllFileFilterUsed(false);
//
if(chooser.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
curFileName = chooser.getSelectedFile().toString();
mapSection = XMLManager.parseFile(curFileName);
showTrafficMap();
} else {
System.out.println("No Selection ");
}
}
private void btViewActionPerformed(ActionEvent evt) {
if(USE_PARAMETERS) {
String htmlFilePath = "html" + ToolKit.fileSeparator() + "trafficPrototype.html";
File htmlFile = new File(htmlFilePath);
String[] params = {"coord=(26.370628,-80.104281),11", "view=1"};
ToolKit.openBrowser(htmlFile.toURI(), params);
} else {
String htmlFilePath = "html" + ToolKit.fileSeparator() + "trafficPrototype2.html";
File htmlFile = new File(htmlFilePath);
HtmlController.writeParameterScript(26.370628, -80.104281, 11, 1);
ToolKit.openBrowser(htmlFile.toURI());
}
}
private void btNewActionPerformed(ActionEvent evt) {
pInput.setVisible(true);
btCreate.setVisible(true);
}
private void btCreateActionPerformed(ActionEvent evt) {
String fileName = tfInput.getText();
String coords = tfCoordinates.getText();
String coord = coords.replace("(", "").replace(")", "");
String[] params = coord.split(",");
boolean invalidCoord = false;
double lat = 0.0;
double lng = 0.0;
int zoom = 0;
try {
lat = Double.parseDouble(params[0].trim());
lng = Double.parseDouble(params[1].trim());
zoom = Integer.parseInt(params[2].trim());
} catch(Exception e) {
invalidCoord = true;
}
if(!invalidCoord) {
mapSection = new MapSection(fileName, lat, lng, zoom);
fileName = fileName.replace(" ", "_");
curFileName = "." + ToolKit.fileSeparator() + "maps" + ToolKit.fileSeparator() + fileName + ".xml";
XMLManager.writeFile(curFileName, mapSection);
showTrafficMap();
} else {
JOptionPane.showMessageDialog(this, "Invalid Coordinates!", "Coordinates", JOptionPane.ERROR_MESSAGE);
}
}
private void cobSectionsActionPerformed(ActionEvent evt) {
imagePanel.setCurrentSection((Section)cobSections.getSelectedItem());
imagePanel.repaint();
}
private void btUndoActionPerformed(ActionEvent evt) {
if(cobSections.getSelectedIndex() != -1) {
Section selectedSection = (Section)cobSections.getSelectedItem();
if(selectedSection.removeLastAddedItem()) {
imagePanel.repaint();
}
}
}
private void btNewSectionActionPerformed(ActionEvent evt) {
String newSectionName = "";
newSectionName = JOptionPane.showInputDialog(this, "Input your new section name.",
"New Section", JOptionPane.QUESTION_MESSAGE);
if(newSectionName != null && !newSectionName.equals("")) {
Section section = new Section(newSectionName);
if(mapSection.addSection(section)) {
cobSections.setSelectedIndex(cobSections.getItemCount() - 1);
} else {
JOptionPane.showMessageDialog(this, "Section " + newSectionName + " already exists!",
"New Section", JOptionPane.INFORMATION_MESSAGE);
}
}
}
private void btDelSectionActionPerformed(ActionEvent evt) {
if(cobSections.getSelectedIndex() != -1) {
int selectedOption = JOptionPane.showConfirmDialog(this, "Delete " +
((Section)cobSections.getSelectedItem()).getId() + " section?",
"Delete Section", JOptionPane.YES_NO_CANCEL_OPTION);
if(selectedOption == JOptionPane.YES_OPTION) {
mapSection.getSections().remove(cobSections.getSelectedIndex());
cobSections.setSelectedIndex(0);
}
}
}
private void btAddObserverActionPerformed(ActionEvent evt) {
if(cobSections.getSelectedIndex() != -1) {
Section sectionToAdd = (Section)cobSections.getSelectedItem();
boolean duplicate = false;
for(Section section : observeTraffic) {
if(section.getId().equals(sectionToAdd.getId())) {
duplicate = true;
}
}
if(!duplicate) {
observeTraffic.add(sectionToAdd);
modelObserve.setData(observeTraffic);
imagePanel.repaint();
}
}
}
private void btDelObserverActionPerformed(ActionEvent evt) {
if(tblObserve.getSelectedRow() != -1) {
observeTraffic.remove(tblObserve.getSelectedRow());
modelObserve.setData(observeTraffic);
imagePanel.repaint();
}
}
private void btObservingActionPerformed(ActionEvent evt) {
String timeInterval = tfInputTinter.getText();//moe
if(modelObserve.getRowCount() > 0) {
if(currentlyObserving) {
currentlyObserving = false;
btObserving.setText("Observe Traffic");
screenCapturing.stopCapturing();
} else {
currentlyObserving = true;
btObserving.setText("Stop Observing");
lineImage = imagePanel.getLineImage();
if(!timeInterval.trim().isEmpty()) //moe
{
tfInputTinter.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
//btObserving.setText("Stop Observing");
}
});
TRAFFIC_REFRESH_RATE=Integer.parseInt(timeInterval);//moe
screenCapturing.captureAutomatically(TRAFFIC_REFRESH_RATE);
}
}
} else {
JOptionPane.showMessageDialog(this, "There are no sections selected.",
"Observe Traffic", JOptionPane.INFORMATION_MESSAGE);
}
}
private void onTrafficObserverClicked(ActionEvent e) {
if(observeTrafficView) {
observeTrafficView = false;
btTrafficObserver.setText("Traffic Observation");
btUndo.setVisible(true);
btSave.setVisible(true);
btNewSection.setVisible(true);
btDelSection.setVisible(true);
lTimeInterval.setVisible(false);
tfInputTinter.setVisible(false);
getContentPane().remove(pObserve);
} else {
observeTrafficView = true;
btTrafficObserver.setText("Traffic Manipulation");
btUndo.setVisible(false);
btSave.setVisible(false);
btNewSection.setVisible(false);
btDelSection.setVisible(false);
lTimeInterval.setVisible(true);
tfInputTinter.setVisible(true);
getContentPane().add(pObserve, BorderLayout.EAST);
}
imagePanel.setObserveTraffic(observeTraffic, observeTrafficView);
validate();
}
}
任何人都可以帮我解决这个问题吗？我想创建一个新的jar文件，但是我想我应该先重建没有警告的项目。
在此先感谢。
您是否按照编译器的建议进行操作：“使用-Xlint重新编译：取消选中详细信息”？你看到了什么额外的信息？ – rgettman