Example usage for java.nio.file Files newBufferedReader

Introduction

In this page you can find the example usage for java.nio.file Files newBufferedReader.

Prototype

public static BufferedReader newBufferedReader(Path path, Charset cs) throws IOException 

Source Link

Document

Opens a file for reading, returning a BufferedReader that may be used to read text from the file in an efficient manner.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    BufferedReader reader = Files.newBufferedReader(Paths.get("a.bat"), StandardCharsets.UTF_8);
    //BufferedReader's lines methods returns a stream of all lines
    reader.lines().forEach(System.out::println);
}

---

From source file:Test.java

public static void main(String[] args) {
    try (BufferedReader inputReader = Files.newBufferedReader(Paths.get(new URI("file:///C:/users.txt")),
            Charset.defaultCharset());
            BufferedWriter outputWriter = Files.newBufferedWriter(Paths.get(new URI("file:///C:/users.bak")),
                    Charset.defaultCharset())) {

        String inputLine;/*from  w  w w  . j  a  v a2  s. co  m*/
        while ((inputLine = inputReader.readLine()) != null) {
            outputWriter.write(inputLine);
            outputWriter.newLine();
        }
        System.out.println("Copy complete!");
    } catch (URISyntaxException | IOException ex) {
        ex.printStackTrace();
    }

}

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From source file:Test.java

public static void main(String[] args) {
    try (BufferedReader inputReader = Files.newBufferedReader(Paths.get(new URI("file:///C:/users.txt")),
            Charset.defaultCharset());

            BufferedWriter outputWriter = Files.newBufferedWriter(Paths.get(new URI("file:///C:/users.bak")),
                    Charset.defaultCharset())) {

        String inputLine;/*from  www  .j  a  v a  2  s  .co  m*/
        while ((inputLine = inputReader.readLine()) != null) {
            outputWriter.write(inputLine);
            outputWriter.newLine();
        }
        System.out.println("Copy complete!");
    } catch (URISyntaxException | IOException ex) {
        ex.printStackTrace();
    }

}

---

From source file:Main.java

public static void main(String[] args) {

    Path wiki_path = Paths.get("C:/tutorial/wiki", "wiki.txt");

    Charset charset = Charset.forName("UTF-8");
    try (BufferedReader reader = Files.newBufferedReader(wiki_path, charset)) {
        String line = null;//w  w w.  j av  a 2s. c o m
        while ((line = reader.readLine()) != null) {
            System.out.println(line);
        }
    } catch (IOException e) {
        System.err.println(e);
    }
}

---

From source file:Main.java

public static void main(String[] args) throws IOException {
    Path path = Paths.get("/home/docs/users.txt");
    Charset charset = Charset.forName("ISO-8859-1");
    try (BufferedReader reader = Files.newBufferedReader(path, charset)) {
        String line = null;//from   ww  w.ja  va  2  s .c  o m
        while ((line = reader.readLine()) != null) {
            System.out.println(line);
        }
    }
}

---

From source file:net.cloudkit.enterprises.ws.SuperPassQueryTest.java

public static void main(String[] args) throws Exception {

    List<String> params = new ArrayList<>();
    // System.out.println(SuperPassQueryTest.class.getResource("/list.dat").toURI());
    Path path = Paths.get(SuperPassQueryTest.class.getResource("/list.dat").toURI());
    try (BufferedReader reader = Files.newBufferedReader(path, Charset.forName("UTF-8"))) {
        // System.out.println(reader.readLine().length());
        String line;//  w  w w  .j a v a2s. c o m
        while ((line = reader.readLine()) != null) {
            // System.out.println("TEXT LINE:" + line);
            params.add(line);
        }
    }

    Path succeededFile = Paths.get(SuperPassQueryTest.class.getResource("/succeeded.dat").toURI());
    BufferedWriter succeededWriter = Files.newBufferedWriter(succeededFile, StandardCharsets.UTF_8,
            StandardOpenOption.APPEND);
    Path failedFile = Paths.get(SuperPassQueryTest.class.getResource("/failed.dat").toURI());
    BufferedWriter failedWriter = Files.newBufferedWriter(failedFile, StandardCharsets.UTF_8,
            StandardOpenOption.APPEND);

    for (String param : params) {
        try {
            /*
            StringTokenizer stringTokenizer = new StringTokenizer(param, ",");
            while(stringTokenizer.hasMoreTokens()){
            System.out.println("COUNT:" + stringTokenizer.countTokens());
            System.out.println("VALUE:" + stringTokenizer.nextToken());
            System.out.println("COUNT:" + stringTokenizer.countTokens());
            }
            */

            System.out.println("QUERY PARAMS:" + param);
            String[] paramArray = param.split(",");
            // System.out.println("VALUE:" + paramArray[0]);
            // System.out.println("VALUE:" + paramArray[1]);
            // System.out.println("VALUE:" + paramArray[2]);

            String value_1 = paramArray[0];
            String value_2 = paramArray[1];
            String value_3 = paramArray[2];

            String serviceName = "eport.superpass.spdec.DecQueryListService";
            byte[] requestContext = ("<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\n"
                    + "<RequestContext>\n" + "    <Group name=\"SystemInfo\">\n"
                    + "        <Key name=\"NAME_FULL\">???</Key>\n"
                    + "        <Key name=\"ClientId\">5300001976914</Key>\n"
                    + "        <Key name=\"CertNo\">df630b</Key>\n"
                    + "        <Key name=\"SaicSysNo\">766350979</Key>\n"
                    + "        <Key name=\"DEP_IN_CODE\">5300</Key>\n"
                    + "        <Key name=\"REG_CO_CGAC\">4403180237</Key>\n"
                    + "        <Key name=\"ENT_SEQ_NO\">000000000000315537</Key>\n"
                    + "        <Key name=\"ENT_TYPE\">3</Key>\n"
                    + "        <Key name=\"IcCode\">8930000011040</Key>\n"
                    + "        <Key name=\"OperatorName\">?</Key>\n"
                    + "        <Key name=\"DEP_CODE_CHG\">5305</Key>\n"
                    + "        <Key name=\"SessionId\">AE2533938D521A9972186B07BBBEB244</Key>\n"
                    + "    </Group>\n" + "    <Group name=\"DataPresentation\">\n"
                    + "        <Key name=\"SignatureAlgorithm\"/>\n"
                    + "        <Key name=\"EncryptAlgorithm\"/>\n"
                    + "        <Key name=\"CompressAlgorithm\"/>\n" + "    </Group>\n"
                    + "    <Group name=\"Default\">\n"
                    + "        <Key name=\"clientSystemId\">0400620001</Key>\n"
                    + "        <Key name=\"needWebInvoke\">True</Key>\n" + "    </Group>\n"
                    + "</RequestContext>").getBytes();

            byte[] requestData = ("<?xml version=\"1.0\"?>\n"
                    + "<DecQueryListRequest xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\">\n"
                    + "  <OperType>0</OperType>\n" + "  <DecType>\n" + "    <TrnType>0</TrnType>\n"
                    + "    <IEFlag>" + value_3 + "</IEFlag>\n" + "    <DecSubType />\n" + "  </DecType>\n"
                    + "  <CopeCode>766350979</CopeCode>\n" + "  <AgentCode>4403180237</AgentCode>\n"
                    + "  <SeqNo>" + value_1 + "</SeqNo>\n" + "  <UserType>0</UserType>\n"
                    + "</DecQueryListRequest>").getBytes();

            Holder<byte[]> responseData = new Holder<>();

            // <?xml version="1.0" encoding="UTF-8" standalone="no"?><ResponseContext><ResponseCode>0</ResponseCode><ResponseMessage>success</ResponseMessage><ServiceResponseCode>0</ServiceResponseCode><ServiceResponseMessage>?</ServiceResponseMessage><ExceptionDetail/><Group name="DataPresentation"><Key name="CompressAlgorithm"/><Key name="SignatureAlgorithm"/><Key name="EncryptAlgorithm"/></Group></ResponseContext>
            // <?xml version="1.0" encoding="UTF-8" standalone="yes"?><DecQueryListResponse><QueryResponseData><EntryId>531820161181010544</EntryId><SeqNo>000000001139524197</SeqNo><BillNo>2016051920160523</BillNo><IEDate>20160621</IEDate><TradeMode>0615</TradeMode><ItemsNum>19</ItemsNum><TrafName></TrafName><Status>O</Status><AgentName>???</AgentName><IEFlag>I</IEFlag><CustomsCode>5318</CustomsCode><DeclTrnRel>0</DeclTrnRel><RetExplain>;?</RetExplain><NoticeDate>2016-06-29</NoticeDate><TradeName>()??</TradeName><ExtendField><DecDeclareSysType>2</DecDeclareSysType><TrnSysType>1</TrnSysType><AssureExamRet>0</AssureExamRet><RelatedDocumentType>  </RelatedDocumentType><DeclareSeqNo>                  </DeclareSeqNo><ExtendField53>P</ExtendField53><ExtendField>21                                                   P</ExtendField></ExtendField><EntryType>M</EntryType></QueryResponseData></DecQueryListResponse>
            // String responseContext = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?><ResponseContext><ResponseCode>0</ResponseCode><ResponseMessage>success</ResponseMessage><ServiceResponseCode>0</ServiceResponseCode><ServiceResponseMessage>?</ServiceResponseMessage><ExceptionDetail/><Group name=\"DataPresentation\"><Key name=\"CompressAlgorithm\"/><Key name=\"SignatureAlgorithm\"/><Key name=\"EncryptAlgorithm\"/></Group></ResponseContext>";
            // String queryListResponse = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?><DecQueryListResponse><QueryResponseData><EntryId>531820161181010544</EntryId><SeqNo>000000001139524197</SeqNo><BillNo>2016051920160523</BillNo><IEDate>20160621</IEDate><TradeMode>0615</TradeMode><ItemsNum>19</ItemsNum><TrafName></TrafName><Status>O</Status><AgentName>???</AgentName><IEFlag>I</IEFlag><CustomsCode>5318</CustomsCode><DeclTrnRel>0</DeclTrnRel><RetExplain>;?</RetExplain><NoticeDate>2016-06-29</NoticeDate><TradeName>()??</TradeName><ExtendField><DecDeclareSysType>2</DecDeclareSysType><TrnSysType>1</TrnSysType><AssureExamRet>0</AssureExamRet><RelatedDocumentType>  </RelatedDocumentType><DeclareSeqNo>                  </DeclareSeqNo><ExtendField53>P</ExtendField53><ExtendField>21                                                   P</ExtendField></ExtendField><EntryType>M</EntryType></QueryResponseData></DecQueryListResponse>";

            String responseContext = new String(
                    superPass.service(serviceName, requestContext, requestData, responseData));
            String queryListResponse = new String(responseData.value);
            System.out.println("RESPONSE_CONTEXT:" + responseContext);
            System.out.println("QUERY_LIST_RESPONSE:" + queryListResponse);

            String serviceResponseCode = parsingReceiptStatus(responseContext);
            System.out.println("SERVICE_RESPONSE_CODE:" + serviceResponseCode);
            if (serviceResponseCode.equals("0")) {
                String data = parsingReceiptData(queryListResponse);
                System.out.println("DATA:" + data);
                succeededWriter.write(data);
                succeededWriter.flush();
            } else {
                failedWriter.write(param + "\n");
                failedWriter.flush();
            }
            Thread.sleep(6 * 1000);
        } catch (Exception e) {
            failedWriter.write(param + "\n");
            failedWriter.flush();
        }
    }
    succeededWriter.close();
    failedWriter.close();
}

---

From source file:com.github.ansell.shp.SHPDump.java

public static void main(String... args) throws Exception {
    final OptionParser parser = new OptionParser();

    final OptionSpec<Void> help = parser.accepts("help").forHelp();
    final OptionSpec<File> input = parser.accepts("input").withRequiredArg().ofType(File.class).required()
            .describedAs("The input SHP file");
    final OptionSpec<File> output = parser.accepts("output").withRequiredArg().ofType(File.class).required()
            .describedAs("The output directory to use for debugging files");
    final OptionSpec<String> outputPrefix = parser.accepts("prefix").withRequiredArg().ofType(String.class)
            .defaultsTo("shp-debug").describedAs("The output prefix to use for debugging files");
    final OptionSpec<File> outputMappingTemplate = parser.accepts("output-mapping").withRequiredArg()
            .ofType(File.class).describedAs("The output mapping template file if it needs to be generated.");
    final OptionSpec<Integer> resolution = parser.accepts("resolution").withRequiredArg().ofType(Integer.class)
            .defaultsTo(2048).describedAs("The output image file resolution");
    final OptionSpec<String> format = parser.accepts("format").withRequiredArg().ofType(String.class)
            .defaultsTo("png").describedAs("The output image format");
    final OptionSpec<String> removeIfEmpty = parser.accepts("remove-if-empty").withRequiredArg()
            .ofType(String.class).describedAs(
                    "The name of an attribute to remove if its value is empty before outputting the resulting shapefile. Use multiple times to specify multiple fields to check");

    OptionSet options = null;//from   ww  w . j  av  a 2 s.  c o m

    try {
        options = parser.parse(args);
    } catch (final OptionException e) {
        System.out.println(e.getMessage());
        parser.printHelpOn(System.out);
        throw e;
    }

    if (options.has(help)) {
        parser.printHelpOn(System.out);
        return;
    }

    final Path inputPath = input.value(options).toPath();
    if (!Files.exists(inputPath)) {
        throw new FileNotFoundException("Could not find input SHP file: " + inputPath.toString());
    }

    final Path outputPath = output.value(options).toPath();
    if (!Files.exists(outputPath)) {
        throw new FileNotFoundException("Output directory does not exist: " + outputPath.toString());
    }

    final Path outputMappingPath = options.has(outputMappingTemplate)
            ? outputMappingTemplate.value(options).toPath()
            : null;
    if (options.has(outputMappingTemplate) && Files.exists(outputMappingPath)) {
        throw new FileNotFoundException(
                "Output mapping template file already exists: " + outputMappingPath.toString());
    }

    final Set<String> filterFields = ConcurrentHashMap.newKeySet();
    if (options.has(removeIfEmpty)) {
        for (String nextFilterField : removeIfEmpty.values(options)) {
            System.out.println("Will filter field if empty value found: " + nextFilterField);
            filterFields.add(nextFilterField);
        }
    }

    if (!filterFields.isEmpty()) {
        System.out.println("Full set of filter fields: " + filterFields);
    }

    final String prefix = outputPrefix.value(options);

    FileDataStore store = FileDataStoreFinder.getDataStore(inputPath.toFile());

    if (store == null) {
        throw new RuntimeException("Could not read the given input as an ESRI Shapefile: "
                + inputPath.toAbsolutePath().toString());
    }

    for (String typeName : new LinkedHashSet<>(Arrays.asList(store.getTypeNames()))) {
        System.out.println("");
        System.out.println("Type: " + typeName);
        SimpleFeatureSource featureSource = store.getFeatureSource(typeName);
        SimpleFeatureType schema = featureSource.getSchema();

        Name outputSchemaName = new NameImpl(schema.getName().getNamespaceURI(),
                schema.getName().getLocalPart().replace(" ", "").replace("%20", ""));
        System.out.println("Replacing name on schema: " + schema.getName() + " with " + outputSchemaName);
        SimpleFeatureType outputSchema = SHPUtils.changeSchemaName(schema, outputSchemaName);

        List<String> attributeList = new ArrayList<>();
        for (AttributeDescriptor attribute : schema.getAttributeDescriptors()) {
            System.out.println("Attribute: " + attribute.getName().toString());
            attributeList.add(attribute.getName().toString());
        }
        CsvSchema csvSchema = CSVUtil.buildSchema(attributeList);

        SimpleFeatureCollection collection = featureSource.getFeatures();
        int featureCount = 0;
        Path nextCSVFile = outputPath.resolve(prefix + ".csv");
        Path nextSummaryCSVFile = outputPath
                .resolve(prefix + "-" + outputSchema.getTypeName() + "-Summary.csv");
        List<SimpleFeature> outputFeatureList = new CopyOnWriteArrayList<>();

        try (SimpleFeatureIterator iterator = collection.features();
                Writer bufferedWriter = Files.newBufferedWriter(nextCSVFile, StandardCharsets.UTF_8,
                        StandardOpenOption.CREATE_NEW);
                SequenceWriter csv = CSVUtil.newCSVWriter(bufferedWriter, csvSchema);) {
            List<String> nextLine = new ArrayList<>();
            while (iterator.hasNext()) {
                SimpleFeature feature = iterator.next();
                featureCount++;
                if (featureCount <= 2) {
                    System.out.println("");
                    System.out.println(feature.getIdentifier());
                } else if (featureCount % 100 == 0) {
                    System.out.print(".");
                }
                boolean filterThisFeature = false;
                for (AttributeDescriptor attribute : schema.getAttributeDescriptors()) {
                    String featureString = Optional.ofNullable(feature.getAttribute(attribute.getName()))
                            .orElse("").toString();
                    nextLine.add(featureString);
                    if (filterFields.contains(attribute.getName().toString())
                            && featureString.trim().isEmpty()) {
                        filterThisFeature = true;
                    }
                    if (featureString.length() > 100) {
                        featureString = featureString.substring(0, 100) + "...";
                    }
                    if (featureCount <= 2) {
                        System.out.print(attribute.getName() + "=");
                        System.out.println(featureString);
                    }
                }
                if (!filterThisFeature) {
                    outputFeatureList.add(SHPUtils.changeSchemaName(feature, outputSchema));
                    csv.write(nextLine);
                }
                nextLine.clear();
            }
        }
        try (Reader csvReader = Files.newBufferedReader(nextCSVFile, StandardCharsets.UTF_8);
                Writer summaryOutput = Files.newBufferedWriter(nextSummaryCSVFile, StandardCharsets.UTF_8,
                        StandardOpenOption.CREATE_NEW);
                final Writer mappingWriter = options.has(outputMappingTemplate)
                        ? Files.newBufferedWriter(outputMappingPath)
                        : NullWriter.NULL_WRITER) {
            CSVSummariser.runSummarise(csvReader, summaryOutput, mappingWriter,
                    CSVSummariser.DEFAULT_SAMPLE_COUNT, false);
        }
        if (featureCount > 100) {
            System.out.println("");
        }
        System.out.println("");
        System.out.println("Feature count: " + featureCount);

        SimpleFeatureCollection outputCollection = new ListFeatureCollection(outputSchema, outputFeatureList);
        Path outputShapefilePath = outputPath.resolve(prefix + "-" + outputSchema.getTypeName() + "-dump");
        if (!Files.exists(outputShapefilePath)) {
            Files.createDirectory(outputShapefilePath);
        }
        SHPUtils.writeShapefile(outputCollection, outputShapefilePath);

        // Create ZIP file from the contents to keep the subfiles together
        Path outputShapefileZipPath = outputPath
                .resolve(prefix + "-" + outputSchema.getTypeName() + "-dump.zip");
        try (final OutputStream out = Files.newOutputStream(outputShapefileZipPath,
                StandardOpenOption.CREATE_NEW);
                final ZipOutputStream zip = new ZipOutputStream(out, StandardCharsets.UTF_8);) {
            Files.list(outputShapefilePath).forEachOrdered(Unchecked.consumer(e -> {
                zip.putNextEntry(new ZipEntry(e.getFileName().toString()));
                Files.copy(e, zip);
                zip.closeEntry();
            }));
        }

        try (final OutputStream outputStream = Files.newOutputStream(
                outputPath.resolve(prefix + "." + format.value(options)), StandardOpenOption.CREATE_NEW);) {
            MapContent map = new MapContent();
            map.setTitle(prefix + "-" + outputSchema.getTypeName());
            Style style = SLD.createSimpleStyle(featureSource.getSchema());
            Layer layer = new FeatureLayer(new CollectionFeatureSource(outputCollection), style);
            map.addLayer(layer);
            SHPUtils.renderImage(map, outputStream, resolution.value(options), format.value(options));
        }
    }
}

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From source file:org.apache.zeppelin.interpreter.InterpreterInfoSaving.java

public static InterpreterInfoSaving loadFromFile(Path file) throws IOException {
    LOGGER.info("Load interpreter setting from file: " + file);
    InterpreterInfoSaving infoSaving = null;
    try (BufferedReader json = Files.newBufferedReader(file, StandardCharsets.UTF_8)) {
        JsonParser jsonParser = new JsonParser();
        JsonObject jsonObject = jsonParser.parse(json).getAsJsonObject();
        infoSaving = InterpreterInfoSaving.fromJson(jsonObject.toString());

        if (infoSaving != null && infoSaving.interpreterSettings != null) {
            for (InterpreterSetting interpreterSetting : infoSaving.interpreterSettings.values()) {
                interpreterSetting.convertPermissionsFromUsersToOwners(jsonObject
                        .getAsJsonObject("interpreterSettings").getAsJsonObject(interpreterSetting.getId()));
            }/*w w w  .j a  va  2s . co  m*/
        }
    }
    return infoSaving == null ? new InterpreterInfoSaving() : infoSaving;
}

---

From source file:Util.java

/**
 * Read a file from disk as a list of String
 * @param filepath path on disk//  w  w w . ja  v a  2  s  . c o  m
 * @return List of String
 */
public static List<String> readLinesFromFile(String filepath) {
    try {
        BufferedReader reader = Files.newBufferedReader(FileSystems.getDefault().getPath("", filepath),
                Charset.defaultCharset());

        List<String> lines = new ArrayList<String>();
        String line = null;
        while ((line = reader.readLine()) != null)
            lines.add(line);

        return lines;
    } catch (IOException ioe) {
        ioe.printStackTrace();
    }
    return null;
}

---

From source file:io.grpc.alts.CheckGcpEnvironment.java

private static boolean isRunningOnGcp() {
    try {//from   ww  w.j  a  va2  s . c  o  m
        if (SystemUtils.IS_OS_LINUX) {
            // Checks GCE residency on Linux platform.
            return checkProductNameOnLinux(Files.newBufferedReader(Paths.get(DMI_PRODUCT_NAME), UTF_8));
        } else if (SystemUtils.IS_OS_WINDOWS) {
            // Checks GCE residency on Windows platform.
            Process p = new ProcessBuilder().command(WINDOWS_COMMAND, "Get-WmiObject", "-Class", "Win32_BIOS")
                    .start();
            return checkBiosDataOnWindows(new BufferedReader(new InputStreamReader(p.getInputStream(), UTF_8)));
        }
    } catch (IOException e) {
        logger.log(Level.WARNING, "Fail to read platform information: ", e);
        return false;
    }
    // Platforms other than Linux and Windows are not supported.
    return false;
}

---

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