Example usage for java.util Scanner next

Introduction

In this page you can find the example usage for java.util Scanner next.

Prototype

public String next() 

Source Link

Document

Finds and returns the next complete token from this scanner.

Usage

From source file:controllers.IndexServlet.java

private static void Track(HttpServletRequest request, HttpServletResponse response, PrintWriter writer) {
    String userAddress = request.getParameter("userAddress");
    String fileName = request.getParameter("fileName");

    String storagePath = DocumentManager.StoragePath(fileName, userAddress);
    String body = "";

    try {//from w  w w.ja  v  a 2  s  .  c  o m
        Scanner scanner = new Scanner(request.getInputStream()).useDelimiter("\\A");
        body = scanner.hasNext() ? scanner.next() : "";
    } catch (Exception ex) {
        writer.write("get request.getInputStream error:" + ex.getMessage());
        return;
    }

    if (body.isEmpty()) {
        writer.write("empty request.getInputStream");
        return;
    }

    JSONParser parser = new JSONParser();
    JSONObject jsonObj;

    try {
        Object obj = parser.parse(body);
        jsonObj = (JSONObject) obj;
    } catch (Exception ex) {
        writer.write("JSONParser.parse error:" + ex.getMessage());
        return;
    }

    long status = (long) jsonObj.get("status");

    if (status == 2 || status == 3)//MustSave, Corrupted
    {
        String downloadUri = (String) jsonObj.get("url");

        int saved = 1;
        try {
            URL url = new URL(downloadUri);
            java.net.HttpURLConnection connection = (java.net.HttpURLConnection) url.openConnection();
            InputStream stream = connection.getInputStream();

            if (stream == null) {
                throw new Exception("Stream is null");
            }

            File savedFile = new File(storagePath);
            try (FileOutputStream out = new FileOutputStream(savedFile)) {
                int read;
                final byte[] bytes = new byte[1024];
                while ((read = stream.read(bytes)) != -1) {
                    out.write(bytes, 0, read);
                }

                out.flush();
            }

            connection.disconnect();

        } catch (Exception ex) {
            saved = 0;
        }
    }

    writer.write("{\"error\":0}");
}

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From source file:IO.java

public static double[][] readDoubleMat(File file, int row, int col) {
    double[][] data = new double[row][col];
    try {/*from   w  ww . j ava  2  s . c o m*/
        Scanner sc = new Scanner(file);
        sc.useDelimiter(",|\\n");

        for (int i = 0; i < row; i++)
            for (int j = 0; j < col; j++) {
                data[i][j] = Double.parseDouble(sc.next());
            }

    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
    return data;
}

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From source file:it.mb.whatshare.SendToGCMActivity.java

/**
 * Loads the ID and name of the paired device in use to share content when
 * Whatsapp is not installed on this device.
 * /*www . jav a 2  s. c o  m*/
 * @param activity
 *            the calling activity
 * @return the device loaded from file if any is configured,
 *         <code>null</code> otherwise
 * @throws OptionalDataException
 * @throws ClassNotFoundException
 * @throws IOException
 */
static Pair<PairedDevice, String> loadOutboundPairing(Context activity)
        throws OptionalDataException, ClassNotFoundException, IOException {
    FileInputStream fis = activity.openFileInput("pairing");
    Scanner scanner = new Scanner(fis).useDelimiter("\\Z");
    JSONObject json;
    try {
        json = new JSONObject(scanner.next());
        String name = json.getString("name");
        String type = json.getString("type");
        String assignedID = json.getString("assignedID");
        return new Pair<PairedDevice, String>(new PairedDevice(assignedID, name, type), assignedID);
    } catch (JSONException e) {
        e.printStackTrace();
    }
    return null;
}

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From source file:com.onesignal.OneSignalRestClient.java

private static void makeRequest(String url, String method, JSONObject jsonBody,
        ResponseHandler responseHandler) {
    HttpURLConnection con = null;
    int httpResponse = -1;
    String json = null;//from  www .j ava  2s  .c  o m

    try {
        con = (HttpURLConnection) new URL(BASE_URL + url).openConnection();
        con.setUseCaches(false);
        con.setDoOutput(true);
        con.setConnectTimeout(TIMEOUT);
        con.setReadTimeout(TIMEOUT);

        if (jsonBody != null)
            con.setDoInput(true);

        con.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
        con.setRequestMethod(method);

        if (jsonBody != null) {
            String strJsonBody = jsonBody.toString();
            OneSignal.Log(OneSignal.LOG_LEVEL.DEBUG, method + " SEND JSON: " + strJsonBody);

            byte[] sendBytes = strJsonBody.getBytes("UTF-8");
            con.setFixedLengthStreamingMode(sendBytes.length);

            OutputStream outputStream = con.getOutputStream();
            outputStream.write(sendBytes);
        }

        httpResponse = con.getResponseCode();

        InputStream inputStream;
        Scanner scanner;
        if (httpResponse == HttpURLConnection.HTTP_OK) {
            inputStream = con.getInputStream();
            scanner = new Scanner(inputStream, "UTF-8");
            json = scanner.useDelimiter("\\A").hasNext() ? scanner.next() : "";
            scanner.close();
            OneSignal.Log(OneSignal.LOG_LEVEL.DEBUG, method + " RECEIVED JSON: " + json);

            if (responseHandler != null)
                responseHandler.onSuccess(json);
        } else {
            inputStream = con.getErrorStream();
            if (inputStream == null)
                inputStream = con.getInputStream();

            if (inputStream != null) {
                scanner = new Scanner(inputStream, "UTF-8");
                json = scanner.useDelimiter("\\A").hasNext() ? scanner.next() : "";
                scanner.close();
                OneSignal.Log(OneSignal.LOG_LEVEL.WARN, method + " RECEIVED JSON: " + json);
            } else
                OneSignal.Log(OneSignal.LOG_LEVEL.WARN,
                        method + " HTTP Code: " + httpResponse + " No response body!");

            if (responseHandler != null)
                responseHandler.onFailure(httpResponse, json, null);
        }
    } catch (Throwable t) {
        if (t instanceof java.net.ConnectException || t instanceof java.net.UnknownHostException)
            OneSignal.Log(OneSignal.LOG_LEVEL.INFO,
                    "Could not send last request, device is offline. Throwable: " + t.getClass().getName());
        else
            OneSignal.Log(OneSignal.LOG_LEVEL.WARN, method + " Error thrown from network stack. ", t);

        if (responseHandler != null)
            responseHandler.onFailure(httpResponse, null, t);
    } finally {
        if (con != null)
            con.disconnect();
    }
}

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From source file:org.wso2.carbon.la.core.utils.LogPatternExtractor.java

public static Map<String, String> processDelimiter(String logLine, String delimiter) {
    String value = null;//from ww  w. j a v  a2  s . c o  m
    String delemiterConf = null;
    Map<String, String> logEvent = new HashMap<>();

    switch (delimiter) {
    case "space":
        delemiterConf = LAConstants.DELIMITER_SPACE;
        break;
    case "comma":
        delemiterConf = LAConstants.DELIMITER_COMMA;
        break;
    case "pipe":
        delemiterConf = LAConstants.DELIMITER_PIPE;
        break;
    case "tab":
        delemiterConf = LAConstants.DELIMITER_TAB;
        break;
    default:
        delemiterConf = delimiter;
        break;
    }
    // Initialize Scanner object
    Scanner scan = new Scanner(logLine.trim());
    // initialize the string delimiter
    scan.useDelimiter(delemiterConf.trim());

    int fieldIndex = 0;
    while (scan.hasNext()) {
        String fieldName = "field" + fieldIndex;
        logEvent.put(fieldName, scan.next());
        fieldIndex++;
    }
    // closing the scanner stream
    scan.close();
    return logEvent;
}

---

From source file:IO.java

public static double[] readDoubleVec(File file, int nDim) {
    Scanner sc;
    double[] wavelength = new double[nDim];
    try {/*from   w  w  w .ja  v  a  2  s. c  om*/
        sc = new Scanner(file);
        sc.useDelimiter(",|\\n");
        for (int i = 0; i < nDim; i++) {
            wavelength[i] = Double.parseDouble(sc.next());
            //System.out.print(wavelength[i]+"\t");
        }
    } catch (FileNotFoundException e) {
        System.out.println("Wavelength file not found\n" + e);
        System.exit(0);
    }
    return wavelength;
}

---

From source file:ch.ethz.inf.vs.hypermedia.client.Utils.java

public static <T extends Enum<T>> T selectFromEnum(Class<T> enumType, Scanner scanner, String prompt) {
    T[] consts = enumType.getEnumConstants();
    String options = Stream.of(consts).map(x -> x.ordinal() + ": " + x).collect(Collectors.joining(", "));
    int index = -1;
    do {// w  w w  . j  ava2s.  c o m
        System.out.printf("%s (%s): %n", prompt, options);
        String val = scanner.next().trim();
        try {
            index = Integer.parseInt(val);
        } catch (NumberFormatException e) {

        }
    } while (!(index >= 0 && index < consts.length));
    return consts[index];
}

---

From source file:com.blackducksoftware.tools.commonframework.core.config.ConfigurationPassword.java

/**
 * Static factory method to create an instance from a line from a Properties
 * file and the Properties object it lives in.
 *
 * @param props/* ww w .j a  v a  2s  . c o  m*/
 * @param configFileLine
 * @return
 */
public static ConfigurationPassword createFromLine(final Properties props, final String configFileLine) {
    // Parse the password prefix from the given config file line
    Scanner scanner = null;
    String prefix = null;
    try {
        scanner = new Scanner(configFileLine);
        scanner.useDelimiter("\\.password=");
        prefix = scanner.next(); // get prefix
    } finally {
        if (scanner != null) {
            scanner.close();
        }
    }

    return new ConfigurationPassword(props, prefix);
}

---

From source file:cn.newgxu.android.bbs.util.NewgxuUtils.java

public static final String get(String url, String charset) {
    HttpClient client = new DefaultHttpClient();
    HttpGet get = new HttpGet(url);
    get.setHeader("Accept", "application/json");
    HttpResponse response = null;//w  w  w. j  a  v a 2s .c  om
    HttpEntity entity = null;
    Scanner scanner = null;
    try {
        response = client.execute(get);
        entity = response.getEntity();
        if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
            InputStream in = entity.getContent();
            scanner = new Scanner(in, charset == null ? "utf-8" : charset).useDelimiter("\\A");
            return scanner.hasNext() ? scanner.next() : null;
        }
    } catch (ClientProtocolException e) {
        Log.wtf(TAG, e);
    } catch (IOException e) {
        Log.wtf(TAG, e);
    } finally {
        try {
            if (entity != null) {
                entity.consumeContent();
            }
        } catch (IOException e) {
            Log.wtf(TAG, e);
        }
    }
    return null;
}

---

From source file:com.sina.cloudstorage.util.URLEncodedUtils.java

/**
 * Adds all parameters within the Scanner to the list of
 * <code>parameters</code>, as encoded by <code>encoding</code>. For
 * example, a scanner containing the string <code>a=1&b=2&c=3</code> would
 * add the {@link NameValuePair NameValuePairs} a=1, b=2, and c=3 to the
 * list of parameters./*from   w ww. j a  v a 2 s. com*/
 *
 * @param parameters
 *            List to add parameters to.
 * @param scanner
 *            Input that contains the parameters to parse.
 * @param charset
 *            Encoding to use when decoding the parameters.
 */
public static void parse(final List<NameValuePair> parameters, final Scanner scanner, final String charset) {
    scanner.useDelimiter(PARAMETER_SEPARATOR);
    while (scanner.hasNext()) {
        String name = null;
        String value = null;
        String token = scanner.next();
        int i = token.indexOf(NAME_VALUE_SEPARATOR);
        if (i != -1) {
            name = decode(token.substring(0, i).trim(), charset);
            value = decode(token.substring(i + 1).trim(), charset);
        } else {
            name = decode(token.trim(), charset);
        }
        parameters.add(new BasicNameValuePair(name, value));
    }
}

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