Example usage for java.io Writer close

List of usage examples for java.io Writer close

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Introduction

In this page you can find the example usage for java.io Writer close.

Prototype

public abstract void close() throws IOException;

Source Link

Document

Closes the stream, flushing it first.

Usage

From source file:juicebox.tools.utils.common.MatrixTools.java

/**
 * Write data from matrix out to specified file with each row on a separate line
 *
 * @param filename//from  w w  w.ja va  2s .  c  o m
 * @param realMatrix
 */
public static void saveMatrixText(String filename, RealMatrix realMatrix) {
    Writer writer = null;
    try {
        writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(filename), "utf-8"));
        double[][] matrix = realMatrix.getData();
        for (double[] row : matrix) {
            writer.write(Arrays.toString(row) + "\n");
        }
    } catch (IOException ex) {
        ex.printStackTrace();
    } finally {
        try {
            if (writer != null)
                writer.close();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}

From source file:dk.clarin.tools.workflow.java

/**
* Sends an HTTP GET request to a url/*w w  w .  j  a v  a  2  s. c  om*/
*
* @param endpoint - The URL of the server. (Example: " http://www.yahoo.com/search")
* @param requestString - all the request parameters (Example: "param1=val1&param2=val2"). Note: This method will add the question mark (?) to the request - DO NOT add it yourself
* @return - The response from the end point
*/

public static int sendRequest(String result, String endpoint, String requestString, bracmat BracMat,
        String filename, String jobID, boolean postmethod) {
    int code = 0;
    String message = "";
    //String filelist;
    if (endpoint.startsWith("http://") || endpoint.startsWith("https://")) {
        // Send a GET or POST request to the servlet
        try {
            // Construct data
            String requestResult = "";
            String urlStr = endpoint;
            if (postmethod) // HTTP POST
            {
                logger.debug("HTTP POST");
                StringReader input = new StringReader(requestString);
                StringWriter output = new StringWriter();
                URL endp = new URL(endpoint);

                HttpURLConnection urlc = null;
                try {
                    urlc = (HttpURLConnection) endp.openConnection();
                    try {
                        urlc.setRequestMethod("POST");
                    } catch (ProtocolException e) {
                        throw new Exception("Shouldn't happen: HttpURLConnection doesn't support POST??", e);
                    }
                    urlc.setDoOutput(true);
                    urlc.setDoInput(true);
                    urlc.setUseCaches(false);
                    urlc.setAllowUserInteraction(false);
                    urlc.setRequestProperty("Content-type", "text/xml; charset=" + "UTF-8");

                    OutputStream out = urlc.getOutputStream();

                    try {
                        Writer writer = new OutputStreamWriter(out, "UTF-8");
                        pipe(input, writer);
                        writer.close();
                    } catch (IOException e) {
                        throw new Exception("IOException while posting data", e);
                    } finally {
                        if (out != null)
                            out.close();
                    }
                } catch (IOException e) {
                    throw new Exception("Connection error (is server running at " + endp + " ?): " + e);
                } finally {
                    if (urlc != null) {
                        code = urlc.getResponseCode();

                        if (code == 200) {
                            got200(result, BracMat, filename, jobID, urlc.getInputStream());
                        } else {
                            InputStream in = urlc.getInputStream();
                            try {
                                Reader reader = new InputStreamReader(in);
                                pipe(reader, output);
                                reader.close();
                                requestResult = output.toString();
                            } catch (IOException e) {
                                throw new Exception("IOException while reading response", e);
                            } finally {
                                if (in != null)
                                    in.close();
                            }
                            logger.debug("urlc.getResponseCode() == {}", code);
                            message = urlc.getResponseMessage();
                            didnotget200(code, result, endpoint, requestString, BracMat, filename, jobID,
                                    postmethod, urlStr, message, requestResult);
                        }
                        urlc.disconnect();
                    } else {
                        code = 0;
                        didnotget200(code, result, endpoint, requestString, BracMat, filename, jobID,
                                postmethod, urlStr, message, requestResult);
                    }
                }
                //requestResult = output.toString();
                logger.debug("postData returns " + requestResult);
            } else // HTTP GET
            {
                logger.debug("HTTP GET");
                // Send data

                if (requestString != null && requestString.length() > 0) {
                    urlStr += "?" + requestString;
                }
                URL url = new URL(urlStr);
                URLConnection conn = url.openConnection();
                conn.connect();

                // Cast to a HttpURLConnection
                if (conn instanceof HttpURLConnection) {
                    HttpURLConnection httpConnection = (HttpURLConnection) conn;
                    code = httpConnection.getResponseCode();
                    logger.debug("httpConnection.getResponseCode() == {}", code);
                    message = httpConnection.getResponseMessage();
                    BufferedReader rd;
                    StringBuilder sb = new StringBuilder();
                    ;
                    //String line;
                    if (code == 200) {
                        got200(result, BracMat, filename, jobID, httpConnection.getInputStream());
                    } else {
                        // Get the error response
                        rd = new BufferedReader(new InputStreamReader(httpConnection.getErrorStream()));
                        int nextChar;
                        while ((nextChar = rd.read()) != -1) {
                            sb.append((char) nextChar);
                        }
                        rd.close();
                        requestResult = sb.toString();
                        didnotget200(code, result, endpoint, requestString, BracMat, filename, jobID,
                                postmethod, urlStr, message, requestResult);
                    }
                } else {
                    code = 0;
                    didnotget200(code, result, endpoint, requestString, BracMat, filename, jobID, postmethod,
                            urlStr, message, requestResult);
                }
            }
            logger.debug("Job " + jobID + " receives status code [" + code + "] from tool.");
        } catch (Exception e) {
            //jobs = 0; // No more jobs to process now, probably the tool is not reachable
            logger.warn("Job " + jobID + " aborted. Reason:" + e.getMessage());
            /*filelist =*/ BracMat.Eval("abortJob$(" + result + "." + jobID + ")");
        }
    } else {
        //jobs = 0; // No more jobs to process now, probably the tool is not integrated at all
        logger.warn("Job " + jobID + " aborted. Endpoint must start with 'http://' or 'https://'. (" + endpoint
                + ")");
        /*filelist =*/ BracMat.Eval("abortJob$(" + result + "." + jobID + ")");
    }
    return code;
}

From source file:juicebox.tools.utils.juicer.apa.APAUtils.java

/**
 * @param filename//  www .  j a  v  a  2  s  .  com
 * @param matrix
 */
public static void saveMeasures(String filename, RealMatrix matrix) {

    Writer writer = null;

    APARegionStatistics apaStats = new APARegionStatistics(matrix);

    try {
        writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(filename), "utf-8"));
        writer.write("P2M" + '\t' + apaStats.getPeak2mean() + '\n');
        writer.write("P2UL" + '\t' + apaStats.getPeak2UL() + '\n');
        writer.write("P2UR" + '\t' + apaStats.getPeak2UR() + '\n');
        writer.write("P2LL" + '\t' + apaStats.getPeak2LL() + '\n');
        writer.write("P2LR" + '\t' + apaStats.getPeak2LR() + '\n');
        writer.write("ZscoreLL" + '\t' + apaStats.getZscoreLL());
    } catch (IOException ex) {
        ex.printStackTrace();
    } finally {
        try {
            if (writer != null)
                writer.close();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}

From source file:com.nary.io.FileUtils.java

public static void writeFile(File outFile, String content) throws IOException {
    Writer outWriter = null;
    try {/* w ww  . j  a  v a2s  .c om*/
        outWriter = cfEngine.thisPlatform.getFileIO().getFileWriter(outFile);
        outWriter.write(content);
        outWriter.flush();
    } finally {
        try {
            if (outWriter != null)
                outWriter.close();
        } catch (Exception ignoreCloseException) {
        }
    }
}

From source file:com.adr.raspberryleds.HTTPUtils.java

public static JSONObject execPOST(String address, JSONObject params) throws IOException {

    BufferedReader readerin = null;
    Writer writerout = null;

    try {//w w w.  jav a 2s  .c o  m
        URL url = new URL(address);
        String query = params.toString();

        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setReadTimeout(10000 /* milliseconds */);
        connection.setConnectTimeout(15000 /* milliseconds */);
        connection.setRequestMethod("POST");
        connection.setAllowUserInteraction(false);

        connection.setUseCaches(false);
        connection.setDoInput(true);
        connection.setDoOutput(true);

        connection.addRequestProperty("Content-Type", "application/json,encoding=UTF-8");
        connection.addRequestProperty("Content-length", String.valueOf(query.length()));

        writerout = new OutputStreamWriter(connection.getOutputStream(), "UTF-8");
        writerout.write(query);
        writerout.flush();

        writerout.close();
        writerout = null;

        int responsecode = connection.getResponseCode();
        if (responsecode == HttpURLConnection.HTTP_OK) {
            StringBuilder text = new StringBuilder();

            readerin = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
            String line = null;
            while ((line = readerin.readLine()) != null) {
                text.append(line);
                text.append(System.getProperty("line.separator"));
            }

            JSONObject result = new JSONObject(text.toString());

            if (result.has("exception")) {
                throw new IOException(
                        MessageFormat.format("Remote exception: {0}.", result.getString("exception")));
            } else {
                return result;
            }
        } else {
            throw new IOException(MessageFormat.format("HTTP response error: {0}. {1}",
                    Integer.toString(responsecode), connection.getResponseMessage()));
        }
    } catch (JSONException ex) {
        throw new IOException(MessageFormat.format("Parse exception: {0}.", ex.getMessage()));
    } finally {
        if (writerout != null) {
            writerout.close();
            writerout = null;
        }
        if (readerin != null) {
            readerin.close();
            readerin = null;
        }
    }
}

From source file:dataGen.DataGen.java

/**
 * Creates normal or uniform distributed Test-Data, without correlation.
 * The resulting Data is stored in the resources Folder.
 * @param dimensions//from   w  w w . j a v a2  s.com
 *       The dimension count of the resulting Data
 * @param rowCount
 *       How many data tuples should be created?
 * @throws IOException
 *       If Stream to a File couldn't be written/closed 
 */
public static void genData(int dimensions, int rowCount) throws IOException {
    logger.info("Generating uniform random Data with " + rowCount + " Tuples in " + dimensions + " dimensions");
    Writer fw = new FileWriter("src/main/resources/random-" + rowCount + "-" + dimensions + ".dat");
    Random gen = new Random();

    for (int i = 1; i <= rowCount; i++) {
        // Each Row should start with the Row count
        String row = i + " ";
        // Files should be created OS/Language independent
        DecimalFormatSymbols dfs = DecimalFormatSymbols.getInstance();
        dfs.setDecimalSeparator('.');
        NumberFormat nf = new DecimalFormat("0.000000000", dfs);

        for (int j = 0; j < dimensions; j++) {
            Float n = gen.nextFloat();
            row = row + nf.format(n) + " ";
        }
        fw.write(row);
        fw.append(System.getProperty("line.separator"));
    }
    fw.close();
    logger.info(rowCount + " entries generated");
}

From source file:com.zimbra.common.util.ByteUtil.java

/**
 * Closes the given writer and ignores any exceptions.
 * @param w the <tt>Writer</tt>, may be <tt>null</tt>
 *//*from   w w w  .  j  av a 2 s.com*/
public static void closeWriter(Writer w) {
    if (w == null) {
        return;
    }
    try {
        w.close();
    } catch (IOException e) {
        ZimbraLog.misc.debug("ignoring exception while closing writer", e);
    }
}

From source file:doc.doclets.WorkbenchHelpDoclet.java

protected static void generateActorHelpTOC(final RootDoc root, final Collection<ClassDoc> classes)
        throws IOException, ClassNotFoundException {
    String template = FileUtils.readFileToString(new File(
            "C:\\data\\development\\workspaces\\isencia-workspaces\\passerelle-V7\\com.isencia.passerelle.doc.generator\\src\\main\\java\\tocTemplate.vm"));
    Map<String, String> actorClassNameMap = new TreeMap<String, String>();
    for (ClassDoc classDoc : classes) {
        actorClassNameMap.put(_generateShortClassName(classDoc), _generateClassName(classDoc));
    }//from w  w  w . j  a v a  2s.c  o m
    Writer resultWriter = new StringWriter();
    try {
        Context velocityContext = new VelocityContext();
        velocityContext.put("allActorClasses", actorClassNameMap);

        velocity.evaluate(velocityContext, resultWriter, "TOC template", template);
        String res = resultWriter.toString();
        _writeTOC(res);
    } finally {
        try {
            resultWriter.close();
        } catch (Exception e) {
        }
    }
}

From source file:doc.doclets.WorkbenchHelpDoclet.java

protected static void generateActorHelpIndex(final RootDoc root, final Collection<ClassDoc> classes)
        throws IOException, ClassNotFoundException {
    String template = FileUtils.readFileToString(new File(
            "C:\\data\\development\\workspaces\\isencia-workspaces\\passerelle-V7\\com.isencia.passerelle.doc.generator\\src\\main\\java\\indexTemplate.vm"));
    Map<String, String> actorClassNameMap = new TreeMap<String, String>();
    for (ClassDoc classDoc : classes) {
        actorClassNameMap.put(_generateShortClassName(classDoc), _generateClassName(classDoc));
    }//  w w  w . ja  v  a2  s  .  c  om
    Writer resultWriter = new StringWriter();
    try {
        Context velocityContext = new VelocityContext();
        velocityContext.put("allActorClasses", actorClassNameMap);

        velocity.evaluate(velocityContext, resultWriter, "index template", template);
        String res = resultWriter.toString();
        _writeIndex(res);
    } finally {
        try {
            resultWriter.close();
        } catch (Exception e) {
        }
    }
}

From source file:doc.doclets.WorkbenchHelpDoclet.java

protected static void generateActorHelpHtmlTOC(final RootDoc root, final Collection<ClassDoc> classes)
        throws IOException, ClassNotFoundException {
    String template = FileUtils.readFileToString(new File(
            "C:\\data\\development\\workspaces\\isencia-workspaces\\passerelle-V7\\com.isencia.passerelle.doc.generator\\src\\main\\java\\htmlTocTemplate.vm"));
    Map<String, String> actorClassNameMap = new TreeMap<String, String>();
    for (ClassDoc classDoc : classes) {
        actorClassNameMap.put(_generateShortClassName(classDoc), _generateClassName(classDoc));
    }/*from   w w  w . ja v a 2  s  .c  o m*/
    Writer resultWriter = new StringWriter();
    try {
        Context velocityContext = new VelocityContext();
        velocityContext.put("allActorClasses", actorClassNameMap);

        velocity.evaluate(velocityContext, resultWriter, "TOC template", template);
        String res = resultWriter.toString();
        _writeHtmlTOC(res);
    } finally {
        try {
            resultWriter.close();
        } catch (Exception e) {
        }
    }
}