// --------------------------------actionConnect------------------------------
private void actionConnect() {
if (oParty == null) {
JOptionPane.showMessageDialog(frame, "Make a party before trying to connect.");
return;
}
String[] oResults = (String[]) DialogManager.show(DialogManager.CONNECT, frame);
if (oResults[DialogManager.RETURN_IP].equals("cancel")) return;
lblStatus3.setText("Connecting...");
try {
oConn.connect(
oResults[DialogManager.RETURN_IP], Integer.parseInt(oResults[DialogManager.RETURN_PORT]));
} catch (UnknownHostException e) {
JOptionPane.showMessageDialog(
frame,
"The IP of the host cannot be determined.",
"Unknown Host Exception",
JOptionPane.ERROR_MESSAGE);
frame.repaint();
return;
} catch (IOException e) {
JOptionPane.showMessageDialog(
frame, e.getMessage(), "Input/Output Exception", JOptionPane.ERROR_MESSAGE);
frame.repaint();
return;
}
echo("Connected to opponent!");
tConn = new Thread(oConn, "conn");
tConn.start();
tMain = new Thread(this, "main");
tMain.start();
}
/**
* 向服务器发送命令行，给服务器端处理
*
* @param lines 命令行
*/
public static void clientSend(String[] lines) {
if (lines != null && lines.length <= 0) {
return;
}
Socket socket = null;
PrintWriter writer = null;
try {
socket = new Socket("localhost", port);
writer =
new PrintWriter(
new BufferedWriter(
new OutputStreamWriter(
socket.getOutputStream(), EncodeConstants.ENCODING_UTF_8)));
for (int i = 0; i < lines.length; i++) {
writer.println(lines[i]);
}
writer.flush();
} catch (Exception e) {
FRContext.getLogger().error(e.getMessage(), e);
} finally {
try {
writer.close();
socket.close();
} catch (IOException e) {
FRContext.getLogger().error(e.getMessage(), e);
}
}
}
void lookUpTaxonID(String taxonID) {
URI url;
try {
// We should look up the miITIS_TSN status, but since we don't
// have any options there ...
url =
new URI(
"http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value="
+ taxonID);
} catch (URISyntaxException e) {
throw new RuntimeException(e);
}
try {
Desktop desktop = Desktop.getDesktop();
desktop.browse(url);
} catch (IOException e) {
MessageBox.messageBox(
mainFrame,
"Could not open URL '" + url + "'",
"The following error occurred while looking up URL '" + url + "': " + e.getMessage(),
MessageBox.ERROR);
}
}
/**
* Repeats the capture with the current settings.
*
* @param aParent the parent window to use, can be <code>null</code>.
*/
public boolean repeatCaptureData(final Window aParent) {
final DeviceController devCtrl = getDeviceController();
if (devCtrl == null) {
return false;
}
try {
setStatus(
"Capture from {0} started at {1,date,medium} {1,time,medium} ...",
devCtrl.getName(), new Date());
devCtrl.captureData(this);
return true;
} catch (IOException exception) {
captureAborted("I/O problem: " + exception.getMessage());
exception.printStackTrace();
// Make sure to handle IO-interrupted exceptions properly!
HostUtils.handleInterruptedException(exception);
return false;
} finally {
updateActions();
}
}
public synchronized void run() {
byte[] buffer = new byte[BUFFER_SIZE];
for (; ; ) {
try {
this.wait(100);
} catch (InterruptedException ie) {
}
int len = 0;
try {
int noBytes = pin.available();
if (noBytes > 0) {
len = pin.read(buffer, 0, Math.min(noBytes, BUFFER_SIZE));
if (len > 0) {
jTextArea.append(new String(buffer, 0, len));
jTextArea.setCaretPosition(jTextArea.getText().length());
}
}
} catch (IOException ioe) {
throw new UIError("Unable to read from input stream! " + ioe.getMessage());
}
}
}
public void lire() {
int x = 0;
try {
File f = new File(_cheminInit);
FileReader fr = new FileReader(f);
BufferedReader br = new BufferedReader(fr);
try {
// initialisation
String line = br.readLine();
_poids = Double.parseDouble(line) * 9.81;
line = br.readLine();
_pasTemps = Double.parseDouble(line);
line = br.readLine();
while (line != null) {
_tabDonnee.add(Double.parseDouble(line));
++x;
line = br.readLine();
}
br.close();
fr.close();
} catch (IOException exception) {
System.out.println("Erreur : " + exception.getMessage());
}
} catch (FileNotFoundException exception) {
System.out.println("Erreur : Fichier non trouvé");
}
}
boolean doSaveNcml(String text, String filename) {
if (debugNcmlWrite) {
System.out.println("filename=" + filename);
System.out.println("text=" + text);
}
File out = new File(filename);
if (out.exists()) {
int val =
JOptionPane.showConfirmDialog(
null,
filename + " already exists. Do you want to overwrite?",
"WARNING",
JOptionPane.YES_NO_OPTION);
if (val != JOptionPane.YES_OPTION) return false;
}
try {
IO.writeToFile(text, out);
JOptionPane.showMessageDialog(this, "File successfully written");
return true;
} catch (IOException ioe) {
JOptionPane.showMessageDialog(this, "ERROR: " + ioe.getMessage());
ioe.printStackTrace();
return false;
}
// saveNcmlDialog.setVisible(false);
}
private boolean connectSPPMon() {
if (state == ConnectionEvent.CONNECTION_PENDING) {
ExpCoordinator.print(
new String("NCCPConnection(" + host + ", " + port + ").connect connection pending"), 0);
while (state == ConnectionEvent.CONNECTION_PENDING) {
try {
Thread.sleep(500);
} catch (java.lang.InterruptedException e) {
}
}
return (isConnected());
}
state = ConnectionEvent.CONNECTION_PENDING;
if (nonProxy != null) {
try {
nonProxy.connect();
} catch (UnknownHostException e) {
boolean rtn = informUserError("Don't know about host: " + host + ":" + e.getMessage());
return rtn;
} catch (SocketTimeoutException e) {
boolean rtn = informUserError("Socket time out for " + host + ":" + e.getMessage());
return rtn;
} catch (IOException e) {
boolean rtn = informUserError("Couldnt get I/O for " + host + ":" + e.getMessage());
return rtn;
}
}
return (isConnected());
}
void searchName(String nameToMatch) {
URI url;
try {
// We should look up the miITIS_TSN status, but since we don't
// have any options there ...
url = new URI("http", "www.google.com", "/search", "q=" + nameToMatch);
// I think the URI handles the URL encoding?
} catch (URISyntaxException e) {
throw new RuntimeException(e);
}
try {
Desktop desktop = Desktop.getDesktop();
desktop.browse(url);
} catch (IOException e) {
MessageBox.messageBox(
mainFrame,
"Could not open URL '" + url + "'",
"The following error occurred while looking up URL '" + url + "': " + e.getMessage(),
MessageBox.ERROR);
}
}
public static void writeArray(String s, int[] x) {
try {
RandomAccessFile output = new RandomAccessFile(s, "rw");
for (int i = 0; i < x.length; i++) output.writeInt(x[i]);
} catch (IOException e) {
System.out.println(e.getMessage());
}
}
public String getValue() {
Array value = att.getValues();
try {
return NCdumpW.printArray(value, null, null);
} catch (IOException e) {
return e.getMessage();
}
}
public synchronized void send(String msg) {
try {
streamOut.writeUTF(msg);
} catch (IOException ioe) {
System.err.println("Sending error: " + ioe.getMessage());
System.exit(0);
}
}
public void openLink(String link) {
if (WWUtil.isEmpty(link)) return;
try {
try {
// See if the link is a URL, and invoke the browser if it is
URL url = new URL(link.replace(" ", "%20"));
Desktop.getDesktop().browse(url.toURI());
return;
} catch (MalformedURLException ignored) { // just means that the link is not a URL
}
// It's not a URL, so see if it's a file and invoke the desktop to open it if it is.
File file = new File(link);
if (file.exists()) {
Desktop.getDesktop().open(new File(link));
return;
}
String message = "Cannot open resource. It's not a valid file or URL.";
Util.getLogger().log(Level.SEVERE, message);
this.showErrorDialog(null, "No Reconocido V\u00ednculo", message);
} catch (UnsupportedOperationException e) {
String message =
"Unable to open resource.\n"
+ link
+ (e.getMessage() != null ? "\n" + e.getMessage() : "");
Util.getLogger().log(Level.SEVERE, message, e);
this.showErrorDialog(e, "Error Opening Resource", message);
} catch (IOException e) {
String message =
"I/O error while opening resource.\n"
+ link
+ (e.getMessage() != null ? ".\n" + e.getMessage() : "");
Util.getLogger().log(Level.SEVERE, message, e);
this.showErrorDialog(e, "I/O Error", message);
} catch (Exception e) {
String message =
"Error attempting to open resource.\n"
+ link
+ (e.getMessage() != null ? "\n" + e.getMessage() : "");
Util.getLogger().log(Level.SEVERE, message);
this.showMessageDialog(message, "Error Opening Resource", JOptionPane.ERROR_MESSAGE);
}
}
// read text from textArea through NcMLReader
// then write it back out via resulting dataset
private void checkNcml(Formatter f) {
if (ncmlLocation == null) return;
try {
NetcdfDataset ncd = NetcdfDataset.openDataset(ncmlLocation);
ncd.check(f);
} catch (IOException ioe) {
JOptionPane.showMessageDialog(this, "ERROR: " + ioe.getMessage());
ioe.printStackTrace();
}
}
private NetcdfDataset openDataset(String location, boolean addCoords, CancelTask task) {
try {
return NetcdfDataset.openDataset(location, addCoords, task);
// if (setUseRecordStructure)
// ncd.sendIospMessage(NetcdfFile.IOSP_MESSAGE_ADD_RECORD_STRUCTURE);
} catch (IOException ioe) {
JOptionPane.showMessageDialog(null, "NetcdfDataset.open cant open " + ioe.getMessage());
if (!(ioe instanceof java.io.FileNotFoundException)) ioe.printStackTrace();
return null;
}
}
@Override
@SuppressWarnings("SleepWhileHoldingLock")
public void run() {
try {
// initialize the statusbar
status.removeAll();
JProgressBar progress = new JProgressBar();
progress.setMinimum(0);
progress.setMaximum(doc.getLength());
status.add(progress);
status.revalidate();
// start writing
Writer out = new FileWriter(f);
Segment text = new Segment();
text.setPartialReturn(true);
int charsLeft = doc.getLength();
int offset = 0;
while (charsLeft > 0) {
doc.getText(offset, Math.min(4096, charsLeft), text);
out.write(text.array, text.offset, text.count);
charsLeft -= text.count;
offset += text.count;
progress.setValue(offset);
try {
Thread.sleep(10);
} catch (InterruptedException e) {
Logger.getLogger(FileSaver.class.getName()).log(Level.SEVERE, null, e);
}
}
out.flush();
out.close();
} catch (IOException e) {
final String msg = e.getMessage();
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
JOptionPane.showMessageDialog(
getFrame(),
"Could not save file: " + msg,
"Error saving file",
JOptionPane.ERROR_MESSAGE);
}
});
} catch (BadLocationException e) {
System.err.println(e.getMessage());
}
// we are done... get rid of progressbar
status.removeAll();
status.revalidate();
}
@Override
public void run() {
try {
// initialize the statusbar
status.removeAll();
JProgressBar progress = new JProgressBar();
progress.setMinimum(0);
progress.setMaximum((int) f.length());
status.add(progress);
status.revalidate();
// try to start reading
Reader in = new FileReader(f);
char[] buff = new char[4096];
int nch;
while ((nch = in.read(buff, 0, buff.length)) != -1) {
doc.insertString(doc.getLength(), new String(buff, 0, nch), null);
progress.setValue(progress.getValue() + nch);
}
} catch (IOException e) {
final String msg = e.getMessage();
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
JOptionPane.showMessageDialog(
getFrame(),
"Could not open file: " + msg,
"Error opening file",
JOptionPane.ERROR_MESSAGE);
}
});
} catch (BadLocationException e) {
System.err.println(e.getMessage());
}
doc.addUndoableEditListener(undoHandler);
// we are done... get rid of progressbar
status.removeAll();
status.revalidate();
resetUndoManager();
if (elementTreePanel != null) {
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
elementTreePanel.setEditor(getEditor());
}
});
}
}
public File getCurrentFile(boolean shouldSave) {
if (shouldSave && _editingFile == null && isDirty()) {
try {
saveAsFile(Settings.isMac());
} catch (IOException e) {
Debug.error(
me + "getCurrentFile: Problem while trying to save %s\n%s",
_editingFile.getAbsolutePath(),
e.getMessage());
}
}
return _editingFile;
}
public String getData() {
ByteArrayOutputStream out = new ByteArrayOutputStream();
try {
getDrawing().getOutputFormats().get(0).write(out, getDrawing());
return out.toString("UTF8");
} catch (IOException e) {
SVGTextFigure tf = new SVGTextFigure();
tf.setText(e.getMessage());
tf.setBounds(new Point2D.Double(10, 10), new Point2D.Double(100, 100));
getDrawing().add(tf);
e.printStackTrace();
return "";
}
}
@Override
public void actionPerformed(ActionEvent ev) {
if (ev.getSource() == btn) {
File file;
String string = "";
try {
if (radioRead.isSelected()) {
file = new File(txt.getText());
DataInputStream input = new DataInputStream(new FileInputStream(file));
int inByte;
while ((inByte = input.read()) != -1) {
string += (char) inByte;
}
input.close();
} else if (radioEncrypt.isSelected()) {
string = fileContent.getOut();
String strEncrypt = new String();
for (int i = 0; i < string.length(); i++) {
char ch = string.charAt(i);
if (ch >= 'A' && ch <= 'Z') {
ch += 13;
if (ch > 'Z') {
ch -= 26;
}
} else if (ch >= 'a' && ch <= 'z') {
ch += 13;
if (ch > 'z') {
ch -= 26;
}
}
strEncrypt += ch;
}
string = strEncrypt;
}
if (fileContent == null) {
fileContent = new FileContent(string);
} else {
fileContent.setVisible(true);
fileContent.setOut(string);
}
} catch (FileNotFoundException e) {
JOptionPane.showMessageDialog(this, "Can't find the file.");
} catch (IOException e) {
JOptionPane.showMessageDialog(this, "IO Exception " + e.getMessage());
}
}
}
private static void doImport(
@NotNull File newConfigDir,
@NotNull File oldConfigDir,
ConfigImportSettings settings,
File installationHome) {
try {
copy(oldConfigDir, newConfigDir, settings, installationHome);
} catch (IOException e) {
JOptionPane.showMessageDialog(
JOptionPane.getRootFrame(),
ApplicationBundle.message("error.unable.to.import.settings", e.getMessage()),
ApplicationBundle.message("title.settings.import.failed"),
JOptionPane.WARNING_MESSAGE);
}
}
public File copyFileToBundle(String filename) {
File f = new File(filename);
String bundlePath = getSrcBundle();
if (f.exists()) {
try {
File newFile = FileManager.smartCopy(filename, bundlePath);
return newFile;
} catch (IOException e) {
Debug.error(
me + "copyFileToBundle: Problem while trying to save %s\n%s", filename, e.getMessage());
return f;
}
}
return null;
}
// read text from textArea through NcMLReader
// then write it back out via resulting dataset
void doTransform(String text) {
try {
StringReader reader = new StringReader(text);
NetcdfDataset ncd = NcMLReader.readNcML(reader, null);
StringWriter sw = new StringWriter(10000);
ncd.writeNcML(sw, null);
editor.setText(sw.toString());
editor.setCaretPosition(0);
JOptionPane.showMessageDialog(this, "File successfully transformed");
} catch (IOException ioe) {
JOptionPane.showMessageDialog(this, "ERROR: " + ioe.getMessage());
ioe.printStackTrace();
}
}
public static void lookingCode() {
int procura = 0;
boolean entrou = false;
do {
procura = Entrada.leiaInt("Digite o código da carta: ");
} while (procura < 0 || procura > 32);
try {
FileReader arq = new FileReader(FileManenger.fileName);
BufferedReader lerArq = new BufferedReader(arq);
String linha = lerArq.readLine();
while (linha != null) {
// procura na string '.'
if (linha.toLowerCase().contains(".".toLowerCase())) {
// separ em um array a linha que tem o nome do personagem ex: 1.CARLOS
String columnArray[] = linha.split(Pattern.quote("."));
// testa se o codigo é o que ele procura
if (procura == Integer.parseInt(columnArray[0])) {
// achou o codigo que ele procura
entrou = true;
}
}
// testa se a linha é igual a * se for ele já não é mais o personagem que procuramos
if (linha.equals("*")) {
entrou = false;
}
// mostra as inforamações do personagem
if (entrou) {
System.out.println(linha);
}
linha = lerArq.readLine();
}
arq.close();
} catch (IOException e) {
System.err.printf("Erro na abertura do arquivo: %s.\n", e.getMessage());
}
}
public static void main(String[] args) {
MyCustomizableGUI custGUI = new MyCustomizableGUI();
UserPreferences savedPrefs;
try (FileInputStream fileIn = new FileInputStream("preferences.ser");
ObjectInputStream objectIn = new ObjectInputStream(fileIn); ) {
savedPrefs = (UserPreferences) objectIn.readObject();
if (savedPrefs.getColor().contains("Red")) {
custGUI.textField.setForeground(Color.red);
custGUI.color.setSelectedItem("Red");
} else if (savedPrefs.getColor().contains("Green")) {
custGUI.textField.setForeground(Color.green);
custGUI.color.setSelectedItem("Green");
} else if (savedPrefs.getColor().contains("Blue")) {
custGUI.textField.setForeground(Color.blue);
custGUI.color.setSelectedItem("Blue");
} else if (savedPrefs.getColor().contains("Cyan")) {
custGUI.textField.setForeground(Color.cyan);
custGUI.color.setSelectedItem("Cyan");
} else if (savedPrefs.getColor().contains("Magenta")) {
custGUI.textField.setForeground(Color.magenta);
custGUI.color.setSelectedItem("Magenta");
} else if (savedPrefs.getColor().contains("Yellow")) {
custGUI.textField.setForeground(Color.yellow);
custGUI.color.setSelectedItem("Yellow");
} else if (savedPrefs.getColor().contains("Black")) {
custGUI.textField.setForeground(Color.black);
custGUI.color.setSelectedItem("Black");
}
custGUI.setFont(savedPrefs.getFont(), savedPrefs.getFontSize());
custGUI.font.setSelectedItem(savedPrefs.getFont());
custGUI.fontSize.setSelectedItem("" + savedPrefs.getFontSize());
} catch (FileNotFoundException noFile) {
// load default font and color
custGUI.setFont("Arial", 25);
custGUI.textField.setForeground(Color.black);
} catch (ClassNotFoundException noPrefs) {
noPrefs.printStackTrace();
} catch (IOException e) {
System.out.println("I/O Error: " + e.getMessage());
}
}
private void openBin() {
fileChooser.resetChoosableFileFilters();
fileChooser.addChoosableFileFilter(binFilter);
fileChooser.setFileFilter(binFilter);
if (fileChooser.showOpenDialog(frame) == JFileChooser.APPROVE_OPTION) {
try {
FileInputStream inbinf = new FileInputStream(fileChooser.getSelectedFile());
int len = inbinf.available();
if (len % 2 == 1) throw new IOException(String.format("Odd file size (0x%x)\n", len));
len /= 2;
if (len > 0x10000) throw new IOException(String.format("Too large file (0x%x)\n", len));
binary = new char[len];
for (int i = 0; i < len; i++) {
int lo = inbinf.read();
int hi = inbinf.read();
if (lo == -1 || hi == -1) throw new IOException("Unable to read\n");
binary[i] = (char) ((hi << 8) | lo);
}
asmMap = new AsmMap();
Disassembler dasm = new Disassembler();
dasm.init(binary);
// TODO attach asmmap
StringBuilder sb = new StringBuilder();
while (dasm.getAddress() < binary.length) {
int addr = dasm.getAddress();
sb.append(String.format("%-26s ; [%04x] =", dasm.next(true), addr));
int addr2 = dasm.getAddress();
while (addr < addr2) {
char i = binary[addr++];
sb.append(
String.format(" %04x '%s'", (int) i, (i >= 0x20 && i < 0x7f) ? (char) i : '.'));
}
sb.append("\n");
}
srcBreakpoints.clear();
sourceRowHeader.breakpointsChanged();
sourceTextarea.setText(sb.toString());
} catch (IOException e1) {
JOptionPane.showMessageDialog(
frame, "Unable to open file: %s" + e1.getMessage(), "Error", JOptionPane.ERROR_MESSAGE);
e1.printStackTrace();
}
}
}
private void SignInButtonActionPerformed(
java.awt.event.ActionEvent evt) { // GEN-FIRST:event_SignInButtonActionPerformed
/* username i password spojit u jedan string s delimiterom " ",
prije toga nadodat kljucnu rijec "log"
taj string se parsira na strani servera i server provjerava jel zadovoljava username i password
(odgovor od servera slusa LoginThread koji salje odgovor Login-u preko handle metode)
*/
String username = UsernameLogin.getText();
String password = PasswordLogin.getText();
String user_pass = "******" + " " + username + " " + password;
try {
streamOut.writeUTF(user_pass);
} catch (IOException ioe) {
System.err.println("Sending error: " + ioe.getMessage());
System.exit(0);
}
} // GEN-LAST:event_SignInButtonActionPerformed
private void writeAll() {
List<MessageBean> beans = messageTable.getBeans();
HashMap<Integer, Message> map = new HashMap<Integer, Message>(2 * beans.size());
for (MessageBean mb : beans) {
map.put(mb.m.hashCode(), mb.m);
}
if (fileChooser == null)
fileChooser = new FileManager(null, null, null, (PreferencesExt) prefs.node("FileManager"));
String defloc = (raf.getLocation() == null) ? "." : raf.getLocation();
String dirName = fileChooser.chooseDirectory(defloc);
if (dirName == null) return;
try {
int count = 0;
for (Message m : map.values()) {
String header = m.getHeader();
if (header != null) {
header = header.split(" ")[0];
} else {
header = Integer.toString(Math.abs(m.hashCode()));
}
File file = new File(dirName + "/" + header + ".bufr");
FileOutputStream fos = new FileOutputStream(file);
WritableByteChannel wbc = fos.getChannel();
wbc.write(ByteBuffer.wrap(m.getHeader().getBytes()));
byte[] raw = scan.getMessageBytes(m);
wbc.write(ByteBuffer.wrap(raw));
wbc.close();
count++;
}
JOptionPane.showMessageDialog(
BufrMessageViewer.this, count + " successfully written to " + dirName);
} catch (IOException e1) {
JOptionPane.showMessageDialog(BufrMessageViewer.this, e1.getMessage());
e1.printStackTrace();
}
}
private void jMenuItemLoadProjectActionPerformed(
java.awt.event.ActionEvent evt) // GEN-FIRST:event_jMenuItemLoadProjectActionPerformed
{ // GEN-HEADEREND:event_jMenuItemLoadProjectActionPerformed
JFileChooser jfc = new JFileChooser();
if (lastPath != null) {
jfc.setCurrentDirectory(lastPath);
}
int fileDialogReturnVal = jfc.showOpenDialog(this);
if (fileDialogReturnVal == JFileChooser.APPROVE_OPTION) {
try {
File inputFile = jfc.getSelectedFile();
FileInputStream fis = new FileInputStream(inputFile);
ObjectInputStream ois = new ObjectInputStream(fis);
this.theProject = (Project) ois.readObject();
this.currentResults = (LSAResults) ois.readObject();
lastPath = new File(jfc.getSelectedFile().getPath());
} catch (IOException e) {
if (this.theProject == null) {
log.log(Log.ERROR, "Failed to load project");
}
if (this.currentResults == null) {
log.log(Log.WARNING, "Failed to load results");
}
log.log(Log.WARNING, e.getMessage());
} catch (ClassNotFoundException e) {
log.log(Log.ERROR, "Class not found error, version mismatch");
}
}
if (this.theProject != null) {
jMenuItemViewDocuments.setEnabled(true);
jMenuItemSaveProject.setEnabled(true);
this.setTitle(theProject.getProjectName());
log.log(Log.INFO, "Project Loaded");
}
if (this.currentResults != null) {
log.log(Log.INFO, "Results loaded");
}
} // GEN-LAST:event_jMenuItemLoadProjectActionPerformed
public static void readFile() {
try {
FileReader arq = new FileReader(FileManenger.fileName);
BufferedReader lerArq = new BufferedReader(arq);
String linha =
lerArq
.readLine(); // lê a primeira linha a variável "linha" recebe o valor "null" quando o
// processo de repetição atingir o final do arquivo texto
while (linha != null) {
System.out.println(linha);
linha = lerArq.readLine(); // lê da segunda até a última linha
}
arq.close();
} catch (IOException e) {
System.err.printf("Erro na abertura do arquivo: %s.\n", e.getMessage());
}
}