We Keep Coding

Device Dicovery file of ONVIF library in android studio

I find out a library of JavaWsDiscovery-0.2.jar. It is find out the ONVIF camera on same network, when I simply run the jar file in android studio, it runs successfully.
But when I want to use it in our project, it does not run just because of Private method.
In this library two methods are private those are not accessible to another class.
When i editing in jar file. so, it shows the compilation Error.
So, I need help in this regard, thank you.
MainActivity.java
public class MainActivity extends AppCompatActivity {
Button btn;
ListView values;
List<String> value;
String[] args;
public static int WS_DISCOVERY_TIMEOUT = 4000;
public static int WS_DISCOVERY_PORT = 3702;
public static String WS_DISCOVERY_ADDRESS_IPv4 = "239.255.255.250";
public static String WS_DISCOVERY_ADDRESS_IPv6 = "[FF02::C]";
public static String WS_DISCOVERY_PROBE_MESSAGE = "<soap:Envelope xmlns:soap=\"http://www.w3.org/2003/05/soap-envelope\" xmlns:wsa=\"http://schemas.xmlsoap.org/ws/2004/08/addressing\" xmlns:tns=\"http://schemas.xmlsoap.org/ws/2005/04/discovery\"><soap:Header><wsa:Action>http://schemas.xmlsoap.org/ws/2005/04/discovery/Probe</wsa:Action><wsa:MessageID>urn:uuid:c032cfdd-c3ca-49dc-820e-ee6696ad63e2</wsa:MessageID><wsa:To>urn:schemas-xmlsoap-org:ws:2005:04:discovery</wsa:To></soap:Header><soap:Body><tns:Probe/></soap:Body></soap:Envelope>";
private static final Random random = new SecureRandom();
String filepath = "/mnt/sdcard/Android/data/com.onvif.camera/com.onvif.javaWsDiscovery-0.2.jar";
static DeviceDiscovery deviceDiscovery;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
deviceDiscovery = new DeviceDiscovery();
btn = (Button) findViewById(R.id.button);
values = (ListView) findViewById(R.id.values);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
try {
main(args);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
});
}
public static void main(String[] args) throws InterruptedException {
Iterator i$ = discoverWsDevicesAsUrls().iterator();
while(i$.hasNext()) {
URL url = (URL)i$.next();
System.out.println("Device discovered: " + url.toString());
}
}
public static Collection<URL> discoverWsDevicesAsUrls() {
return discoverWsDevicesAsUrls("", "");
}
public static Collection<URL> discoverWsDevicesAsUrls(String regexpProtocol, String regexpPath) {
TreeSet urls = new TreeSet(new Comparator() {
#Override
public int compare(Object o1, Object o2) {
return o1.toString().compareTo(o2.toString());
}
});
Iterator i$ = discoverWsDevices().iterator();
while(i$.hasNext()) {
String key = (String)i$.next();
try {
URL e = new URL(key);
boolean ok = true;
if(regexpProtocol.length() > 0 && !e.getProtocol().matches(regexpProtocol)) {
ok = false;
}
if(regexpPath.length() > 0 && !e.getPath().matches(regexpPath)) {
ok = false;
}
if(ok) {
urls.add(e);
}
} catch (MalformedURLException var7) {
var7.printStackTrace();
}
}
return urls;
}
public static Collection<String> discoverWsDevices() {
final ConcurrentSkipListSet addresses = new ConcurrentSkipListSet();
final CountDownLatch serverStarted = new CountDownLatch(1);
final CountDownLatch serverFinished = new CountDownLatch(1);
ArrayList addressList = new ArrayList();
try {
Enumeration executorService = NetworkInterface.getNetworkInterfaces();
if(executorService != null) {
label45:
while(true) {
NetworkInterface ignored;
do {
if(!executorService.hasMoreElements()) {
break label45;
}
ignored = (NetworkInterface)executorService.nextElement();
} while(ignored.isLoopback());
List address = ignored.getInterfaceAddresses();
Iterator runnable = address.iterator();
while(runnable.hasNext()) {
InterfaceAddress address1 = (InterfaceAddress)runnable.next();
addressList.add(address1.getAddress());
}
}
}
} catch (SocketException var10) {
var10.printStackTrace();
}
ExecutorService executorService1 = Executors.newCachedThreadPool();
Iterator ignored1 = addressList.iterator();
while(ignored1.hasNext()) {
final InetAddress address2 = (InetAddress)ignored1.next();
Runnable runnable1 = new Runnable() {
public void run() {
try {
String e = UUID.randomUUID().toString();
String probe = WS_DISCOVERY_PROBE_MESSAGE.replaceAll("<wsa:MessageID>urn:uuid:.*</wsa:MessageID>", "<wsa:MessageID>urn:uuid:" + e + "</wsa:MessageID>");
int port = random.nextInt(20000) + '鱀';
final DatagramSocket server = new DatagramSocket(port, address2);
(new Thread() {
public void run() {
try {
DatagramPacket e = new DatagramPacket(new byte[4096], 4096);
server.setSoTimeout(WS_DISCOVERY_TIMEOUT);
long timerStarted = System.currentTimeMillis();
while(System.currentTimeMillis() - timerStarted < (long)WS_DISCOVERY_TIMEOUT) {
serverStarted.countDown();
server.receive(e);
Collection collection = deviceDiscovery.parseSoapResponseForUrls(Arrays.copyOf(e.getData(), e.getLength()));
Iterator i$ = collection.iterator();
while(i$.hasNext()) {
String key = (String)i$.next();
addresses.add(key);
}
}
} catch (SocketTimeoutException var11) {
;
} catch (Exception var12) {
var12.printStackTrace();
} finally {
serverFinished.countDown();
server.close();
}
}
}).start();
try {
serverStarted.await(1000L, TimeUnit.MILLISECONDS);
} catch (InterruptedException var7) {
var7.printStackTrace();
}
if(address2 instanceof Inet4Address) {
server.send(new DatagramPacket(probe.getBytes(), probe.length(), InetAddress.getByName(WS_DISCOVERY_ADDRESS_IPv4), WS_DISCOVERY_PORT));
} else {
server.send(new DatagramPacket(probe.getBytes(), probe.length(), InetAddress.getByName(WS_DISCOVERY_ADDRESS_IPv6), WS_DISCOVERY_PORT));
}
} catch (Exception var8) {
var8.printStackTrace();
}
try {
serverFinished.await((long)WS_DISCOVERY_TIMEOUT, TimeUnit.MILLISECONDS);
} catch (InterruptedException var6) {
var6.printStackTrace();
}
}
};
executorService1.submit(runnable1);
}
try {
executorService1.shutdown();
executorService1.awaitTermination((long)(WS_DISCOVERY_TIMEOUT + 2000), TimeUnit.MILLISECONDS);
} catch (InterruptedException var9) {
;
}
return addresses;
}
}
DeviceDiscovery.class
private static Collection<Node> getNodeMatching(Node body, String regexp) {
ArrayList nodes = new ArrayList();
if(body.getNodeName().matches(regexp)) {
nodes.add(body);
}
if(body.getChildNodes().getLength() == 0) {
return nodes;
} else {
NodeList returnList = body.getChildNodes();
for(int k = 0; k < returnList.getLength(); ++k) {
Node node = returnList.item(k);
nodes.addAll(getNodeMatching(node, regexp));
}
return nodes;
}
}
private static Collection<String> parseSoapResponseForUrls(byte[] data) throws SOAPException, IOException {
ArrayList urls = new ArrayList();
MessageFactory factory = MessageFactory.newInstance(WS_DISCOVERY_SOAP_VERSION);
MimeHeaders headers = new MimeHeaders();
headers.addHeader("Content-type", WS_DISCOVERY_CONTENT_TYPE);
SOAPMessage message = factory.createMessage(headers, new ByteArrayInputStream(data));
SOAPBody body = message.getSOAPBody();
Iterator i$ = getNodeMatching(body, ".*:XAddrs").iterator();
while(i$.hasNext()) {
Node node = (Node)i$.next();
if(node.getTextContent().length() > 0) {
urls.addAll(Arrays.asList(node.getTextContent().split(" ")));
}
}
return urls;
}
I want to use both method of DeviceDiscovery.class. But it's not accessible because it's a private method.
I am not able to editing in DeviceDiscovery.class because it's a part of jar file and it's only readable form.
This is the error I have:
(216, 80) error: parseSoapResponseForUrls(byte[]) has private access in DeviceDiscovery

JavaFX Update TextField in Loop

I have a problem with my application JavaFX.
Image: https://picload.org/image/rlwpwdgi/javafx.png
With the button (1) showing the second window.
With the key (2) start the search in a path.
I need that the TextField (3) update as searching finds files.
In the Controller class of the second window, the button (2) perform this method.
public void startSuchen() {
String text = textFieldPfad.getText();
if (text.length() > 0) {
dateiGef = 0;
dateiGes = 0;
listf(pfad);
textFieldDateiGef.setText(String.valueOf(dateiGef));
textFieldDateiGes.setText(String.valueOf(dateiGes));
}
}
And this is the procedure listf:
private void listf(File directory) {
try {
File[] fileList = directory.listFiles();
for (File file : fileList) {
// Platform.runLater(new Runnable() {
// #Override
// public void run() {
// textFieldDateiGef.setText(String.valueOf(getDateiGef()));
// textFieldDateiGes.setText(String.valueOf(getDateiGes()));
// }
// });
// Thread thrd = new Thread() {
// public void run() {
// Platform.runLater(new Runnable() {
// #Override
// public void run() {
// textFieldDateiGef.setText(String.valueOf(getDateiGef()));
// textFieldDateiGes.setText(String.valueOf(getDateiGes()));
// }
// });
// }
// };
// thrd.start();
if (file.isFile()) {
dateiGes += 1;
String fileName = file.getName().toLowerCase();
String nome = textFieldName.getText().toLowerCase();
Pattern r = Pattern.compile(nome);
Matcher m = r.matcher(fileName);
if (m.find()) {
dateiGef += 1;
}
} else if (file.isDirectory()) {
listf(file);
}
}
} catch (NullPointerException e) {
System.out.println(e.getMessage());
} catch (IOException e) {
System.out.println(e.getMessage());
}
}
The commented lines are my tests to update the GUI, I also tried with the Task, but unfortunately it does not work. Someone please help me understand why?
Here is the solution:
public void startSuchen() {
String text = textFieldPfad.getText();
if (text.length() > 0) {
dateiGef = 0;
dateiGes = 0;
// Solution
new Thread(() -> listf(pfad)).start();
// End Solution
textFieldDateiGef.setText(String.valueOf(dateiGef));
textFieldDateiGes.setText(String.valueOf(dateiGes));
}
}
And this is the procedure listf:
private void listf(File directory) {
try {
File[] fileList = directory.listFiles();
for (File file : fileList) {
// Solution
Platform.runLater(new Runnable() {
#Override
public void run() {
textFieldDateiGef.setText(String.valueOf(getDateiGef()));
textFieldDateiGes.setText(String.valueOf(getDateiGes()));
}
});
// End Solution
if (file.isFile()) {
dateiGes += 1;
String fileName = file.getName().toLowerCase();
String nome = textFieldName.getText().toLowerCase();
Pattern r = Pattern.compile(nome);
Matcher m = r.matcher(fileName);
if (m.find()) {
dateiGef += 1;
}
} else if (file.isDirectory()) {
listf(file);
}
}
} catch (NullPointerException e) {
System.out.println(e.getMessage());
} catch (IOException e) {
System.out.println(e.getMessage());
}
}
Many thanks to James_D

Exception thrown from the UncaughtExceptionHandler

I am writing an apk analysis program. I cannot go deep into details because it's research material. However, the point is that from time to time when I execute the analysis routine, I get the following message:
Exception: java.lang.NullPointerException thrown from the UncaughtExceptionHandler in thread "main"
This happens if I do not override the UncaughtExceptionHandler and also if I do, as you'll see from the code below. Since there is no stacktrace data I cannot know where that exception is coming from and what its cause really is.
I hope you can help me...
This is only the main code. There are three main operation that I have to execute. In order not to disclose particular information, I renamed them to A, B and C
public class MainScannerSequential {
public static void main(String[] args) throws ParserConfigurationException, IOException, InterruptedException {
final File target = new File(args[1]);
final File result = new File(args[2]);
final Options options = new Options(args);
silentMode = options.contains("-s");
noA = options.contains("-nl");
noC = options.contains("-ne");
aStrategy = Factory.createA();
bScanner = Factory.createB();
cDetector = Factory.createcC();
examinedFiles = new PersistentFileList(Globals.EXAMINED_FILES_LIST_FILE);
if (result.exists())
resultsWriter = new BufferedWriter(new FileWriter(result, true));
else {
resultsWriter = new BufferedWriter(new FileWriter(result));
resultsWriter.write("***");
resultsWriter.newLine();
}
if (Globals.PERFORMANCE_FILE.exists())
performancesWriter = new BufferedWriter(new FileWriter(Globals.PERFORMANCE_FILE, true));
else {
performancesWriter = new BufferedWriter(new FileWriter(Globals.PERFORMANCE_FILE));
performancesWriter.write("***");
performancesWriter.newLine();
}
Thread.currentThread().setUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
#Override
public void uncaughtException(Thread t, Throwable e) {
if ((t != null) && (t.getName() != null))
System.out.println("In thread : " + t.getName());
if ((e != null) && (e.getMessage() != null)) {
System.out.println(e.getClass().getName() + ": " + e.getMessage());
if (e.getStackTrace() != null)
for (StackTraceElement ste : e.getStackTrace())
if (ste != null)
System.out.println(ste.getFileName() + " at line " + ste.getLineNumber());
}
}
});
if (target.isDirectory()) {
enumerateDirectory(target);
} else {
String name = target.getName().toLowerCase();
if (name.endsWith(".apklist"))
readFileList(target);
else if (name.endsWith(".apk"))
checkFile(target);
}
closeWriters();
}
private static void println(String message) {
if (!silentMode)
System.out.println(message);
}
private static void print(String message) {
if (!silentMode)
System.out.print(message);
}
private static void enumerateDirectory(File directory) {
for (File file : directory.listFiles()) {
checkFile(file);
if (file.isDirectory())
enumerateDirectory(file);
}
}
private static void readFileList(File file) {
try {
BufferedReader reader = new BufferedReader(new FileReader(file));
String line = null;
while((line = reader.readLine()) != null) {
File readFile = new File(line);
if (readFile.exists())
checkFile(readFile);
}
reader.close();
} catch (Exception e) {
e.printStackTrace();
}
}
private static void checkFile(File file) {
if (examinedFiles.contains(file)) {
println("Skipped: " + file.getName());
return;
}
if (!file.getName().toLowerCase().endsWith(".apk")) {
return;
}
final Wrapper<Double> unpackingTime = new Wrapper<Double>(0.0);
final ApplicationData data = unpack(file, unpackingTime);
if (data == null) {
return;
}
scanData(data, unpackingTime.value);
}
private static ApplicationData unpack(final File file, final Wrapper<Double> unpackingTime) {
final Wrapper<ApplicationData> resultWrapper = new Wrapper<ApplicationData>(null);
final Wrapper<Exception> exceptionWrapper = new Wrapper<Exception>(null);
println("Unpacking: " + file.getName());
unpackingTime.value = Stopwatch.time(new Runnable() {
#Override
public void run() {
try {
resultWrapper.value = ApplicationData.open(file);
} catch (Exception e) {
exceptionWrapper.value = e;
}
}
});
if (resultWrapper.value != null)
println("Unpacked: " + file.getName());
else if (exceptionWrapper.value != null)
println("Dropped: " + file.getName() + " : " + exceptionWrapper.value.getMessage());
return resultWrapper.value;
}
private static void scanData(final ApplicationData applicationData, Double unpackingTime) {
String apkName = applicationData.getDecodedPackage().getOriginalApk().getAbsolutePath();
println("Submitted: " + apkName);
examinedFiles.add(applicationData.getDecodedPackage().getOriginalApk());
final Wrapper<Boolean> aDetected = new Wrapper<Boolean>(false);
final Wrapper<Result> bDetected = new Wrapper<Result>(new Result());
final Wrapper<Boolean> cDetected = new Wrapper<Boolean>(false);
final Wrapper<Double> aDetectionTime = new Wrapper<Double>((double)ANALYSIS_TIMEOUT);
final Wrapper<Double> bDetectionTime = new Wrapper<Double>((double)ANALYSIS_TIMEOUT);
final Wrapper<Double> cDetectionTime = new Wrapper<Double>((double)ANALYSIS_TIMEOUT);
ExecutorService executor = Executors.newFixedThreadPool(3);
executor.submit(new Runnable() {
#Override
public void run() {
textDetectionTime.value = Stopwatch.time(new Runnable() {
#Override
public void run() {
bScanner.setUnpackedApkDirectory(applicationData.getDecodedPackage().getDecodedDirectory());
bDetected.value = bScanner.evaluate();
}
});
}
});
if (!noA)
executor.submit(new Runnable() {
#Override
public void run() {
lockDetectionTime.value = Stopwatch.time(new Runnable() {
#Override
public void run() {
aStrategy.setTarget(applicationData.getDecodedPackage());
aDetected.value = aStrategy.detect();
}
});
}
});
if (!noC)
executor.submit(new Runnable() {
#Override
public void run() {
encryptionDetectionTime.value = Stopwatch.time(new Runnable() {
#Override
public void run() {
cDetector.setTarget(applicationData.getDecodedPackage());
cDetected.value = cDetector.detect();
}
});
}
});
boolean timedOut = false;
executor.shutdown();
try {
if (!executor.awaitTermination(ANALYSIS_TIMEOUT, TimeUnit.SECONDS)) {
executor.shutdownNow();
timedOut = true;
}
} catch (InterruptedException e) {
e.printStackTrace();
}
try {
resultsWriter.write(String.format("%s, %b, %b, %f, %b, \"%s\", %b\n",
apkName,
aDetected.value,
bDetected.value.isAccepted(),
bDetected.value.getScore(),
cDetected.value,
bDetected.value.getComment(),
timedOut));
performancesWriter.write(String.format("%s, %f, %f, %f, %f, %d, %dl, %dl\n",
apkName,
aDetectionTime.value,
bDetectionTime.value,
cDetectionTime.value,
unpackingTime,
applicationData.getSmaliLoader().getClassesCount(),
applicationData.getSmaliLoader().getTotalClassesSize(),
applicationData.getDecodedPackage().getOriginalApk().length()));
resultsWriter.flush();
performancesWriter.flush();
} catch (IOException e) { }
// No longer deleting temp files
if (!timedOut)
println("Completed: " + apkName);
else {
print("Timeout");
if (bDetectionTime.value == 0) print(" TextDetection");
if (!noA && (aDetectionTime.value == 0)) print(" LockDetection");
if (!noC && (cDetectionTime.value == 0)) print(" EncryptionDetection");
println(": " + apkName);
}
}
private static void closeWriters() throws IOException {
resultsWriter.close();
performancesWriter.close();
examinedFiles.dispose();
}
private static final int ANALYSIS_TIMEOUT = 40; // seconds
private static Boolean silentMode = false;
private static Boolean noA = false;
private static Boolean noC = false;
private static PersistentFileList examinedFiles;
private static BufferedWriter resultsWriter;
private static BufferedWriter performancesWriter;
private static A aStrategy;
private static B bScanner;
private static C cDetector;
}
I labeled the question as multithread because the same happens in the multithreaded version, which I serialized using this code in order to debug that error. Notice that the NullPointerException is in thread main, not in other Executor-spawned threads.

If you don't have a stack trace, it could mean that there are some crazy exceptions thrown in your code (see Exception without stack trace in Java), but it is more likely that the JVM is re-using exception objects as a performance optimization and the -XX:-OmitStackTraceInFastThrow JVM option would help you.
See this article for details

program to show a progress bar while transferring all files from one server to another in java

i have written a java code to transfer files from one server to another using the concept of socket programming. now in the same code i also want to check for the network connection availability before each file is transferred. i also want that the files transferred should be transferred according to their numerical sequence. And while the files are being transferred the transfer progress of each file i.e the progress percentage bar should also be visible on the screen.
i will really appreciate if someone can help me with the code. i am posting the code i have written for file transfer.
ClientMain.java
import java.io.*;
import java.net.Socket;
import java.net.SocketException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
public class ClientMain {
private DirectoryTxr transmitter = null;
Socket clientSocket = null;
private boolean connectedStatus = false;
private String ipAddress;
String srcPath = null;
String dstPath = "";
public ClientMain() {
}
public void setIpAddress(String ip) {
this.ipAddress = ip;
}
public void setSrcPath(String path) {
this.srcPath = path;
}
public void setDstPath(String path) {
this.dstPath = path;
}
private void createConnection() {
Runnable connectRunnable = new Runnable() {
public void run() {
while (!connectedStatus) {
try {
clientSocket = new Socket(ipAddress, 3339);
connectedStatus = true;
transmitter = new DirectoryTxr(clientSocket, srcPath, dstPath);
} catch (IOException io) {
io.printStackTrace();
}
}
}
};
Thread connectionThread = new Thread(connectRunnable);
connectionThread.start();
}
public static void main(String[] args) {
ClientMain main = new ClientMain();
main.setIpAddress("10.6.3.92");
main.setSrcPath("E:/temp/movies/");
main.setDstPath("D:/tcp/movies");
main.createConnection();
}
}
(DirectoryTxr.java)
import java.io.*;
import java.net.Socket;
import java.net.SocketException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
public class DirectoryTxr {
Socket clientSocket = null;
String srcDir = null;
String dstDir = null;
byte[] readBuffer = new byte[1024];
private InputStream inStream = null;
private OutputStream outStream = null;
int state = 0;
final int permissionReqState = 1;
final int initialState = 0;
final int dirHeaderSendState = 2;
final int fileHeaderSendState = 3;
final int fileSendState = 4;
final int fileFinishedState = 5;
private boolean isLive = false;
private int numFiles = 0;
private int filePointer = 0;
String request = "May I send?";
String respServer = "Yes,You can";
String dirResponse = "Directory created...Please send files";
String fileHeaderRecvd = "File header received ...Send File";
String fileReceived = "File Received";
String dirFailedResponse = "Failed";
File[] opFileList = null;
public DirectoryTxr(Socket clientSocket, String srcDir, String dstDir) {
try {
this.clientSocket = clientSocket;
inStream = clientSocket.getInputStream();
outStream = clientSocket.getOutputStream();
isLive = true;
this.srcDir = srcDir;
this.dstDir = dstDir;
state = initialState;
readResponse(); //starting read thread
sendMessage(request);
state = permissionReqState;
} catch (IOException io) {
io.printStackTrace();
}
}
private void sendMessage(String message) {
try {
sendBytes(request.getBytes("UTF-8"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
/**
* Thread to read response from server
*/
private void readResponse() {
Runnable readRunnable = new Runnable() {
public void run() {
while (isLive) {
try {
int num = inStream.read(readBuffer);
if (num > 0) {
byte[] tempArray = new byte[num];
System.arraycopy(readBuffer, 0, tempArray, 0, num);
processBytes(tempArray);
}
} catch (SocketException se) {
System.exit(0);
} catch (IOException io) {
io.printStackTrace();
isLive = false;
}
}
}
};
Thread readThread = new Thread(readRunnable);
readThread.start();
}
private void sendDirectoryHeader() {
File file = new File(srcDir);
if (file.isDirectory()) {
try {
String[] childFiles = file.list();
numFiles = childFiles.length;
String dirHeader = "$" + dstDir + "#" + numFiles + "&";
sendBytes(dirHeader.getBytes("UTF-8"));
} catch (UnsupportedEncodingException en) {
en.printStackTrace();
}
} else {
System.out.println(srcDir + " is not a valid directory");
}
}
private void sendFile(String dirName) {
File file = new File(dirName);
if (!file.isDirectory()) {
try {
int len = (int) file.length();
int buffSize = len / 8;
//to avoid the heap limitation
RandomAccessFile raf = new RandomAccessFile(file, "rw");
FileChannel channel = raf.getChannel();
int numRead = 0;
while (numRead >= 0) {
ByteBuffer buf = ByteBuffer.allocate(1024 * 100000);
numRead = channel.read(buf);
if (numRead > 0) {
byte[] array = new byte[numRead];
System.arraycopy(buf.array(), 0, array, 0, numRead);
sendBytes(array);
}
}
System.out.println("Finished");
} catch (IOException io) {
io.printStackTrace();
}
}
}
private void sendHeader(String fileName) {
try {
File file = new File(fileName);
if (file.isDirectory())
return;//avoiding child directories to avoid confusion
//if want we can sent them recursively
//with proper state transitions
String header = "&" + fileName + "#" + file.length() + "*";
sendHeader(header);
sendBytes(header.getBytes("UTF-8"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
private void sendBytes(byte[] dataBytes) {
synchronized (clientSocket) {
if (outStream != null) {
try {
outStream.write(dataBytes);
outStream.flush();
} catch (IOException io) {
io.printStackTrace();
}
}
}
}
private void processBytes(byte[] data) {
try {
String parsedMessage = new String(data, "UTF-8");
System.out.println(parsedMessage);
setResponse(parsedMessage);
} catch (UnsupportedEncodingException u) {
u.printStackTrace();
}
}
private void setResponse(String message) {
if (message.trim().equalsIgnoreCase(respServer) && state == permissionReqState) {
state = dirHeaderSendState;
sendDirectoryHeader();
} else if (message.trim().equalsIgnoreCase(dirResponse) && state == dirHeaderSendState) {
state = fileHeaderSendState;
if (LocateDirectory()) {
createAndSendHeader();
} else {
System.out.println("Vacant or invalid directory");
}
} else if (message.trim().equalsIgnoreCase(fileHeaderRecvd) && state == fileHeaderSendState) {
state = fileSendState;
sendFile(opFileList[filePointer].toString());
state = fileFinishedState;
filePointer++;
} else if (message.trim().equalsIgnoreCase(fileReceived) && state == fileFinishedState) {
if (filePointer < numFiles) {
createAndSendHeader();
}
System.out.println("Successfully sent");
} else if (message.trim().equalsIgnoreCase(dirFailedResponse)) {
System.out.println("Going to exit....Error ");
// System.exit(0);
} else if (message.trim().equalsIgnoreCase("Thanks")) {
System.out.println("All files were copied");
}
}
private void closeSocket() {
try {
clientSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
private boolean LocateDirectory() {
boolean status = false;
File file = new File(srcDir);
if (file.isDirectory()) {
opFileList = file.listFiles();
numFiles = opFileList.length;
if (numFiles <= 0) {
System.out.println("No files found");
} else {
status = true;
}
}
return status;
}
private void createAndSendHeader() {
File opFile = opFileList[filePointer];
String header = "&" + opFile.getName() + "#" + opFile.length() + "*";
try {
state = fileHeaderSendState;
sendBytes(header.getBytes("UTF-8"));
} catch (UnsupportedEncodingException e) {
}
}
private void sendListFiles() {
createAndSendHeader();
}
}
(ServerMain.java)
public class ServerMain {
public ServerMain() {
}
public static void main(String[] args) {
DirectoryRcr dirRcr = new DirectoryRcr();
}
}
(DirectoryRcr.java)
import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
public class DirectoryRcr {
String request = "May I send?";
String respServer = "Yes,You can";
String dirResponse = "Directory created...Please send files";
String dirFailedResponse = "Failed";
String fileHeaderRecvd = "File header received ...Send File";
String fileReceived = "File Received";
Socket socket = null;
OutputStream ioStream = null;
InputStream inStream = null;
boolean isLive = false;
int state = 0;
final int initialState = 0;
final int dirHeaderWait = 1;
final int dirWaitState = 2;
final int fileHeaderWaitState = 3;
final int fileContentWaitState = 4;
final int fileReceiveState = 5;
final int fileReceivedState = 6;
final int finalState = 7;
byte[] readBuffer = new byte[1024 * 100000];
long fileSize = 0;
String dir = "";
FileOutputStream foStream = null;
int fileCount = 0;
File dstFile = null;
public DirectoryRcr() {
acceptConnection();
}
private void acceptConnection() {
try {
ServerSocket server = new ServerSocket(3339);
socket = server.accept();
isLive = true;
ioStream = socket.getOutputStream();
inStream = socket.getInputStream();
state = initialState;
startReadThread();
} catch (IOException io) {
io.printStackTrace();
}
}
private void startReadThread() {
Thread readRunnable = new Thread() {
public void run() {
while (isLive) {
try {
int num = inStream.read(readBuffer);
if (num > 0) {
byte[] tempArray = new byte[num];
System.arraycopy(readBuffer, 0, tempArray, 0, num);
processBytes(tempArray);
}
sleep(100);
} catch (SocketException s) {
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException i) {
i.printStackTrace();
}
}
}
};
Thread readThread = new Thread(readRunnable);
readThread.start();
}
private void processBytes(byte[] buff) throws InterruptedException {
if (state == fileReceiveState || state == fileContentWaitState) {
//write to file
if (state == fileContentWaitState)
state = fileReceiveState;
fileSize = fileSize - buff.length;
writeToFile(buff);
if (fileSize == 0) {
state = fileReceivedState;
try {
foStream.close();
} catch (IOException io) {
io.printStackTrace();
}
System.out.println("Received " + dstFile.getName());
sendResponse(fileReceived);
fileCount--;
if (fileCount != 0) {
state = fileHeaderWaitState;
} else {
System.out.println("Finished");
state = finalState;
sendResponse("Thanks");
Thread.sleep(2000);
System.exit(0);
}
System.out.println("Received");
}
} else {
parseToUTF(buff);
}
}
private void parseToUTF(byte[] data) {
try {
String parsedMessage = new String(data, "UTF-8");
System.out.println(parsedMessage);
setResponse(parsedMessage);
} catch (UnsupportedEncodingException u) {
u.printStackTrace();
}
}
private void setResponse(String message) {
if (message.trim().equalsIgnoreCase(request) && state == initialState) {
sendResponse(respServer);
state = dirHeaderWait;
} else if (state == dirHeaderWait) {
if (createDirectory(message)) {
sendResponse(dirResponse);
state = fileHeaderWaitState;
} else {
sendResponse(dirFailedResponse);
System.out.println("Error occurred...Going to exit");
System.exit(0);
}
} else if (state == fileHeaderWaitState) {
createFile(message);
state = fileContentWaitState;
sendResponse(fileHeaderRecvd);
} else if (message.trim().equalsIgnoreCase(dirFailedResponse)) {
System.out.println("Error occurred ....");
System.exit(0);
}
}
private void sendResponse(String resp) {
try {
sendBytes(resp.getBytes("UTF-8"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
private boolean createDirectory(String dirName) {
boolean status = false;
dir = dirName.substring(dirName.indexOf("$") + 1, dirName.indexOf("#"));
fileCount = Integer.parseInt(dirName.substring(dirName.indexOf("#") + 1, dirName.indexOf("&")));
if (new File(dir).mkdir()) {
status = true;
System.out.println("Successfully created directory " + dirName);
} else if (new File(dir).mkdirs()) {
status = true;
System.out.println("Directories were created " + dirName);
} else if (new File(dir).exists()) {
status = true;
System.out.println("Directory exists" + dirName);
} else {
System.out.println("Could not create directory " + dirName);
status = false;
}
return status;
}
private void createFile(String fileName) {
String file = fileName.substring(fileName.indexOf("&") + 1, fileName.indexOf("#"));
String lengthFile = fileName.substring(fileName.indexOf("#") + 1, fileName.indexOf("*"));
fileSize = Integer.parseInt(lengthFile);
dstFile = new File(dir + "/" + file);
try {
foStream = new FileOutputStream(dstFile);
System.out.println("Starting to receive " + dstFile.getName());
} catch (FileNotFoundException fn) {
fn.printStackTrace();
}
}
private void writeToFile(byte[] buff) {
try {
foStream.write(buff);
} catch (IOException io) {
io.printStackTrace();
}
}
private void sendBytes(byte[] dataBytes) {
synchronized (socket) {
if (ioStream != null) {
try {
ioStream.write(dataBytes);
} catch (IOException io) {
io.printStackTrace();
}
}
}
}
}
ClientMain.java and DirectoryTxr.java are the two classes under client application. ServerMain.java and DirectoryRcr.java are the two classes under Server application.
run the ClientMain.java and ServerMain.java

You can sort an array using Arrays.sort(...)
ie
String[] childFiles = file.list();
Arrays.sort(childFiles);
As I understand it, this will sort the files in natural order, based on the file name.
You can modify this by passing a custom Comparator...
Arrays.sort(childFiles, new Comparator<File>() {...}); // Fill out with your requirements...
Progress monitoring will come down to your requirements. Do you want to see only the overall progress of the number of files, the individual files, a combination of both?
What I've done in the past is pre-iterated the file list, calculated the total number of bytes to be copied and used a ProgressMonitor to display the overall bytes been copied...
Otherwise you will need to supply your own dialog. In either case, you will need use SwingUtilities.invokeLater to update them correctly.
Check out Concurrency in Swing for more details.
Network connectivity is subjective. You could simply send a special "message" to there server and wait for a response, but this only suggests that the message was sent and a recipt was received. It could just as easily fail when you start transfering the file again...

RMS stored values are not permanently available in J2ME emulator

I have code to stored the value using RMS in J2ME. It's working fine on emulator. So, my first problem is
When i restart the emulator all the stored values are deleted.
Stored values are showing in the emulator, but not in the Mobile, in which i am testing my application.
I am using NetBeans for developing my J2ME application.
===UPDATED===
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import javax.microedition.rms.*;
public class TryNew extends MIDlet implements CommandListener, ItemCommandListener {
private RecordStore record;
private StringItem registered;
static final String REC_STORE = "SORT";
//Button existUser;
Display display = null;
private Ticker ticker;
Form form = null;
Form form1 = null;
TextField tb, tb1, tb2, tb3;
ChoiceGroup operator = null;
String str = null;
Command backCommand = new Command("Back", Command.BACK, 0);
Command loginCommand = new Command("Login", Command.OK, 2);
Command saveCommand = new Command("Save New", Command.OK, 1);
Command sendCommand = new Command("Send", Command.OK, 2);
Command selectCommand = new Command("Select", Command.OK, 0);
Command exitCommand = new Command("Exit", Command.STOP, 3);
private ValidateLogin ValidateLogin;
public TryNew() {
}
public void startApp() throws MIDletStateChangeException {
display = Display.getDisplay(this);
form = new Form("Login");
registered = new StringItem("", "Registered ?", StringItem.BUTTON);
form1 = new Form("Home");
tb = new TextField("Login Id: ", "", 10, TextField.PHONENUMBER);//TextField.PHONENUMBER
tb1 = new TextField("Password: ", "", 30, TextField.PASSWORD);
operator = new ChoiceGroup("Select Website", Choice.POPUP, new String[]{"Game", "Joke", "SMS"}, null);
form.append(tb);
form.append(tb1);
form.append(operator);
form.append(registered);
registered.setDefaultCommand(selectCommand);
registered.setItemCommandListener(this);
form.addCommand(saveCommand);
ticker = new Ticker("Welcome Screen");
form.addCommand(loginCommand);
form.addCommand(selectCommand);
form.addCommand(exitCommand);
// existUser = new StringItem(null, "Registered ?");
// form.append(existUser);
form.setCommandListener(this);
form1.addCommand(exitCommand);
form1.addCommand(sendCommand);
form1.setCommandListener(this);
form.setTicker(ticker);
display.setCurrent(form);
}
public void pauseApp() {
}
public void destroyApp(boolean unconditional) {
}
void showMessage(String message, Displayable displayable) {
Alert alert = new Alert("");
alert.setTitle("Error");
alert.setString(message);
alert.setType(AlertType.ERROR);
alert.setTimeout(5000);
display.setCurrent(alert, displayable);
}
public void commandAction(Command c, Displayable d) {
if (c == exitCommand) {
destroyApp(true);
notifyDestroyed();
} else if (c == backCommand) {
display.setCurrent(form);
} else if (c == loginCommand) {
ValidateLogin = new ValidateLogin(this);
ValidateLogin.start();
ValidateLogin.validateLogin(tb.getString(), tb1.getString(), operator.getString(operator.getSelectedIndex()));
} else if (c == saveCommand) {
openRecord();
writeRecord(tb.getString(), tb1.getString(), operator.getString(operator.getSelectedIndex()));
closeRecord();
showAlert("Login Credential Saved Successfully !!");
}
}
////==============================================================================/////
/// Record Management
public void openRecord() {
try {
record = RecordStore.openRecordStore(REC_STORE, true);
} catch (Exception e) {
db(e.toString());
}
}
public void closeRecord() {
try {
record.closeRecordStore();
} catch (Exception e) {
db(e.toString());
}
}
public void deleteRecord() {
if (RecordStore.listRecordStores() != null) {
try {
RecordStore.deleteRecordStore(REC_STORE);
} catch (Exception e) {
db(e.toString());
}
}
}
public void writeRecord(String login_id, String pwd, String operator_name) {
String credential = login_id + "," + pwd + "," + operator_name;
byte[] rec = credential.getBytes();
try {
if (login_id.length() > 10 || login_id.length() < 10) {
showAlert("Please Enter valid Login Id");
} else if (pwd.length() < 1) {
showAlert("Please Password !!");
} else {
record.addRecord(rec, 0, rec.length);
}
} catch (Exception e) {
db(e.toString());
}
}
private void showAlert(String err) {
Alert a = new Alert("");
a.setString(err);
a.setTimeout(Alert.FOREVER);
display.setCurrent(a);
}
public void readRecord() {
try {
if (record.getNumRecords() > 0) {
Comparator comp = new Comparator();
RecordEnumeration re = record.enumerateRecords(null, comp, false);
while (re.hasNextElement()) {
String str = new String(re.nextRecord());
showAlert(str);
}
}
} catch (Exception e) {
db(e.toString());
}
}
private void db(String error) {
System.err.println("Exception: " + error);
}
public void commandAction(Command c, Item item) {
if (c == selectCommand && item == registered) {
openRecord();
readRecord();
closeRecord();
}
}
class Comparator implements RecordComparator {
public int compare(byte[] rec1, byte[] rec2) {
String str1 = new String(rec1);
String str2 = new String(rec2);
int result = str1.compareTo(str2);
if (result == 0) {
return RecordComparator.EQUIVALENT;
} else if (result < 0) {
return RecordComparator.PRECEDES;
} else {
return RecordComparator.FOLLOWS;
}
}
}
class ValidateLogin implements Runnable {
TryNew midlet;
private Display display;
String login_id;
String pwd;
String operator_name;
public ValidateLogin(TryNew midlet) {
this.midlet = midlet;
display = Display.getDisplay(midlet);
}
public void start() {
Thread t = new Thread(this);
t.start();
}
public void run() {
if (login_id.length() > 10 || login_id.length() < 10) {
showAlert("Please Enter valid Login Id");
} else if (pwd.length() < 1) {
showAlert("Please Password !!");
} else {
showHome();
}
}
/* This method takes input from user like text and pass
to servlet */
public void validateLogin(String login_id, String pwd, String operator_name) {
this.login_id = login_id;
this.pwd = pwd;
this.operator_name = operator_name;
}
/* Display Error On screen*/
private void showAlert(String err) {
Alert a = new Alert("");
a.setString(err);
a.setTimeout(Alert.FOREVER);
display.setCurrent(a);
}
private void showHome() {
tb2 = new TextField("To: ", "", 30, TextField.PHONENUMBER);
tb3 = new TextField("Message: ", "", 300, TextField.ANY);
form1.append(tb2);
form1.append(tb3);
form1.addCommand(loginCommand);
//display.setCurrent(tb3);
display.setCurrent(form1);
}
};
}
This is what i got, when i click the Manage Emulator

You need to fix the storage_root of your app in WTK,
Whenever you start your enulator it would refer to same storage_root, by default it creates different data files for each session