Example usage for java.io DataInputStream DataInputStream

List of usage examples for java.io DataInputStream DataInputStream

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Introduction

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

Prototype

public DataInputStream(InputStream in)

Source Link

Document

Creates a DataInputStream that uses the specified underlying InputStream.

Usage

From source file:WriteReadMixedDataTypesExample.java

public void commandAction(Command command, Displayable displayable) {
    if (command == exit) {
        destroyApp(true);/*  w ww .j  av a 2  s  .  c  o  m*/
        notifyDestroyed();
    } else if (command == start) {
        try {
            recordstore = RecordStore.openRecordStore("myRecordStore", true);
        } catch (Exception error) {
            alert = new Alert("Error Creating", error.toString(), null, AlertType.WARNING);
            alert.setTimeout(Alert.FOREVER);
            display.setCurrent(alert);
        }
        try {
            byte[] outputRecord;
            String outputString = "First Record";
            int outputInteger = 15;
            boolean outputBoolean = true;
            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            DataOutputStream outputDataStream = new DataOutputStream(outputStream);
            outputDataStream.writeUTF(outputString);
            outputDataStream.writeBoolean(outputBoolean);
            outputDataStream.writeInt(outputInteger);
            outputDataStream.flush();
            outputRecord = outputStream.toByteArray();
            recordstore.addRecord(outputRecord, 0, outputRecord.length);
            outputStream.reset();
            outputStream.close();
            outputDataStream.close();
        } catch (Exception error) {
            alert = new Alert("Error Writing", error.toString(), null, AlertType.WARNING);
            alert.setTimeout(Alert.FOREVER);
            display.setCurrent(alert);
        }
        try {
            String inputString = null;
            int inputInteger = 0;
            boolean inputBoolean = false;
            byte[] byteInputData = new byte[100];
            ByteArrayInputStream inputStream = new ByteArrayInputStream(byteInputData);
            DataInputStream inputDataStream = new DataInputStream(inputStream);
            for (int x = 1; x <= recordstore.getNumRecords(); x++) {
                recordstore.getRecord(x, byteInputData, 0);
                inputString = inputDataStream.readUTF();
                inputBoolean = inputDataStream.readBoolean();
                inputInteger = inputDataStream.readInt();
                inputStream.reset();
            }
            inputStream.close();
            inputDataStream.close();
            alert = new Alert("Reading", inputString + " " + inputInteger + " " + inputBoolean, null,
                    AlertType.WARNING);
            alert.setTimeout(Alert.FOREVER);
            display.setCurrent(alert);
        } catch (Exception error) {
            alert = new Alert("Error Reading", error.toString(), null, AlertType.WARNING);
            alert.setTimeout(Alert.FOREVER);
            display.setCurrent(alert);
        }
        try {
            recordstore.closeRecordStore();
        } catch (Exception error) {
            alert = new Alert("Error Closing", error.toString(), null, AlertType.WARNING);
            alert.setTimeout(Alert.FOREVER);
            display.setCurrent(alert);
        }
        if (RecordStore.listRecordStores() != null) {
            try {
                RecordStore.deleteRecordStore("myRecordStore");
            } catch (Exception error) {
                alert = new Alert("Error Removing", error.toString(), null, AlertType.WARNING);
                alert.setTimeout(Alert.FOREVER);
                display.setCurrent(alert);
            }
        }
    }
}

From source file:ml.shifu.guagua.io.Bzip2BytableSerializer.java

/**
 * De-serialize from bytes to object. One should provide the class name before de-serializing the object.
 * /*w w  w.j a  v  a 2 s .  c  o  m*/
 * @throws NullPointerException
 *             if className or data is null.
 * @throws GuaguaRuntimeException
 *             if any io exception or other reflection exception.
 */
@Override
public RESULT bytesToObject(byte[] data, String className) {
    if (data == null || className == null) {
        throw new NullPointerException(
                String.format("data and className should not be null. data:%s, className:%s",
                        Arrays.toString(data), className));
    }
    @SuppressWarnings("unchecked")
    RESULT result = (RESULT) ReflectionUtils.newInstance(className);
    DataInputStream dataIn = null;
    try {
        InputStream in = new ByteArrayInputStream(data);
        InputStream gzipInput = new BZip2CompressorInputStream(in);
        dataIn = new DataInputStream(gzipInput);
        result.readFields(dataIn);
    } catch (Exception e) {
        throw new GuaguaRuntimeException(e);
    } finally {
        if (dataIn != null) {
            try {
                dataIn.close();
            } catch (IOException e) {
                throw new GuaguaRuntimeException(e);
            }
        }
    }
    return result;
}

From source file:it.cnr.icar.eric.common.security.X509Parser.java

/**
 * Parses a X509Certificate from a DER formatted input stream. Uses the 
 * BouncyCastle provider if available.//from  w  w w .ja  v  a2 s  . c o m
 *
 * @param inStream The DER InputStream with the certificate.
 * @return X509Certificate parsed from stream.
 * @throws JAXRException in case of IOException or CertificateException
 *  while parsing the stream.
 */
public static X509Certificate parseX509Certificate(InputStream inStream) throws JAXRException {
    try {
        //possible options
        // - der x509 generated by keytool -export
        // - der x509 generated by openssh x509 (might require BC provider)

        // Get the CertificateFactory to parse the stream
        // if BouncyCastle provider available, use it
        CertificateFactory cf;
        try {
            Class<?> clazz = Class.forName("org.bouncycastle.jce.provider.BouncyCastleProvider");
            Constructor<?> constructor = clazz.getConstructor(new Class[] {});
            Provider bcProvider = (Provider) constructor.newInstance(new Object[] {});
            Security.addProvider(bcProvider);
            cf = CertificateFactory.getInstance("X.509", "BC");
        } catch (Exception e) {
            // log error if bc present but failed to instanciate/add provider
            if (!(e instanceof ClassNotFoundException)) {
                log.error(CommonResourceBundle.getInstance()
                        .getString("message.FailedToInstantiateBouncyCastleProvider"));
            }
            // fall back to default provider
            cf = CertificateFactory.getInstance("X.509");
        }

        // Read the stream to a local variable
        DataInputStream dis = new DataInputStream(inStream);
        byte[] bytes = new byte[dis.available()];
        dis.readFully(bytes);
        ByteArrayInputStream certStream = new ByteArrayInputStream(bytes);

        // Parse the cert stream
        int i = 0;
        Collection<? extends Certificate> c = cf.generateCertificates(certStream);
        X509Certificate[] certs = new X509Certificate[c.toArray().length];
        for (Iterator<? extends Certificate> it = c.iterator(); it.hasNext();) {
            certs[i++] = (X509Certificate) it.next();
        }

        // Some logging..
        if (log.isDebugEnabled()) {
            if (c.size() == 1) {
                log.debug("One certificate, no chain.");
            } else {
                log.debug("Certificate chain length: " + c.size());
            }
            log.debug("Subject DN: " + certs[0].getSubjectDN().getName());
            log.debug("Issuer DN: " + certs[0].getIssuerDN().getName());
        }

        // Do we need to return the chain?
        // do we need to verify if cert is self signed / valid?
        return certs[0];
    } catch (CertificateException e) {
        String msg = CommonResourceBundle.getInstance().getString("message.parseX509CertificateStreamFailed",
                new Object[] { e.getClass().getName(), e.getMessage() });
        throw new JAXRException(msg, e);
    } catch (IOException e) {
        String msg = CommonResourceBundle.getInstance().getString("message.parseX509CertificateStreamFailed",
                new Object[] { e.getClass().getName(), e.getMessage() });
        throw new JAXRException(msg, e);
    } finally {
        try {
            inStream.close();
        } catch (IOException e) {
            inStream = null;
        }
    }
}

From source file:genepi.db.h2.H2Connector.java

public static String readFileAsString(InputStream is) throws java.io.IOException, URISyntaxException {

    DataInputStream in = new DataInputStream(is);
    BufferedReader br = new BufferedReader(new InputStreamReader(in));
    String strLine;//from www  . j  av a2s.com
    StringBuilder builder = new StringBuilder();
    while ((strLine = br.readLine()) != null) {
        builder.append("\n");
        builder.append(strLine);
    }

    in.close();

    return builder.toString();
}

From source file:edu.du.penrose.systems.fedoraApp.tests.UtilModsToFileTest.java

void writeModsToFile(String outputDirName, File inputFile, int fileCount) {

    BufferedReader br = null;/*from  w w  w.ja v a 2s  .  co m*/
    BufferedWriter bw = null;
    try {
        File outFile = null;
        FileInputStream fis = new FileInputStream(inputFile);
        FileOutputStream fos = null;

        DataInputStream in = new DataInputStream(fis);
        br = new BufferedReader(new InputStreamReader(in));

        String doucmentType = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
        String oneLine = null;
        while (br.ready()) {
            oneLine = br.readLine();
            if (oneLine.contains("<mods:mods")) {

                outFile = new File(outputDirName + "\\mods_" + fileCount + ".xml");
                fos = new FileOutputStream(outFile);

                bw = new BufferedWriter(new OutputStreamWriter(fos, "UTF-8"));
                bw.write(doucmentType);
                bw.newLine();
                while (!oneLine.contains("</mods:mods")) { // null pointer on premature end of file.
                    bw.write(oneLine);
                    bw.newLine();
                    oneLine = br.readLine();
                }
                bw.write(oneLine);
                bw.newLine();
                bw.close();
                fileCount++;
            }
        } // while
    } catch (Exception e) {
        String errorMsg = "Exception:" + e;
        System.out.println(errorMsg);
    } finally {
        try {
            br.close();
            bw.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

From source file:gobblin.metrics.reporter.KafkaAvroEventReporterWithSchemaRegistryTest.java

@Test
public void test() throws Exception {

    MetricContext context = MetricContext.builder("context").build();

    MockKafkaPusher pusher = new MockKafkaPusher();
    KafkaAvroSchemaRegistry registry = Mockito.mock(KafkaAvroSchemaRegistry.class);
    Mockito.when(registry.register(Mockito.any(Schema.class))).thenAnswer(new Answer<String>() {
        @Override/*from  w  ww.j  a  v a  2 s .  com*/
        public String answer(InvocationOnMock invocation) throws Throwable {
            return register((Schema) invocation.getArguments()[0]);
        }
    });
    Mockito.when(registry.register(Mockito.any(Schema.class), Mockito.anyString()))
            .thenAnswer(new Answer<String>() {
                @Override
                public String answer(InvocationOnMock invocation) throws Throwable {
                    return register((Schema) invocation.getArguments()[0]);
                }
            });
    KafkaEventReporter kafkaReporter = KafkaAvroEventReporter.forContext(context).withKafkaPusher(pusher)
            .withSchemaRegistry(registry).build("localhost:0000", "topic");

    GobblinTrackingEvent event = new GobblinTrackingEvent(0l, "namespace", "name",
            Maps.<String, String>newHashMap());

    context.submitEvent(event);

    try {
        Thread.sleep(100);
    } catch (InterruptedException ex) {
        Thread.currentThread().interrupt();
    }

    kafkaReporter.report();

    try {
        Thread.sleep(100);
    } catch (InterruptedException ex) {
        Thread.currentThread().interrupt();
    }

    byte[] nextMessage = pusher.messageIterator().next();
    DataInputStream is = new DataInputStream(new ByteArrayInputStream(nextMessage));
    Assert.assertEquals(is.readByte(), KafkaAvroSchemaRegistry.MAGIC_BYTE);
    byte[] readId = new byte[20];
    Assert.assertEquals(is.read(readId), 20);
    String readStringId = Hex.encodeHexString(readId);
    Assert.assertTrue(this.schemas.containsKey(readStringId));

    Schema schema = this.schemas.get(readStringId);
    Assert.assertFalse(schema.toString().contains("avro.java.string"));

    is.close();
}

From source file:eu.delving.sip.files.ReportFile.java

public ReportFile(File reportFile, File reportIndexFile, File invalidFile, File linkFile, DataSet dataSet,
        String prefix) throws IOException {
    this.reportFile = reportFile;
    this.reportAccess = new RandomAccessFile(this.reportFile, "r");
    this.reportIndexAccess = new RandomAccessFile(reportIndexFile, "r");
    this.linkFile = new LinkFile(linkFile, dataSet, prefix);
    this.dataSet = dataSet;
    this.prefix = prefix;
    int recordCount = (int) (reportIndexAccess.length() / LONG_SIZE);
    recs = new ArrayList<Rec>(recordCount);
    for (int walk = 0; walk < recordCount; walk++)
        recs.add(new Rec(walk));
    DataInputStream invalidIn = new DataInputStream(new FileInputStream(invalidFile));
    int invalidCount = invalidIn.readInt();
    invalidRecs = new ArrayList<Rec>(invalidCount);
    for (int walk = 0; walk < invalidCount; walk++) {
        int recordNumber = invalidIn.readInt();
        invalidRecs.add(recs.get(recordNumber));
    }//from   w w w. j a v  a  2s  . c  o  m
    invalidIn.close();
}

From source file:mitm.common.security.crypto.PBEncryptedStreamParameters.java

private void fromInputStream(InputStream input) throws IOException {
    DataInputStream dis = new DataInputStream(input);

    long version = dis.readLong();

    if (version != serialVersionUID) {
        throw new SerializationException("Version expected '" + serialVersionUID + "' but got '" + version);
    }/*from w ww .j  a  v  a  2 s.c o  m*/

    algorithm = dis.readUTF();

    int saltSize = dis.readInt();

    this.salt = new byte[saltSize];

    dis.readFully(salt);

    this.iterationCount = dis.readInt();
}

From source file:juserdefaults.JUserDefaults.java

private void loadStorage() {
    File file = new File(storageFileName);
    String completeFileString = "";
    try {/*from  w w w .  j a va2s .c o m*/
        FileInputStream fstream = new FileInputStream(file.getAbsolutePath());

        DataInputStream in = new DataInputStream(fstream);
        BufferedReader br = new BufferedReader(new InputStreamReader(in));
        String strLine;

        while ((strLine = br.readLine()) != null) {
            completeFileString = completeFileString + strLine + "\n";
        }
        in.close();
    } catch (Exception e) {
        System.err.println("Error: " + e.getMessage());
    }

    try {
        this.storageObject = new org.json.JSONObject(completeFileString);
    } catch (Exception e) {
        System.err.println(e.getMessage());
    }
}

From source file:SearchMixedRecordDataTypeExample.java

public void commandAction(Command command, Displayable displayable) {
    if (command == exit) {
        destroyApp(true);/*from  w  w w  .j a  va  2  s  . co m*/
        notifyDestroyed();
    } else if (command == start) {
        try {
            recordstore = RecordStore.openRecordStore("myRecordStore", true);
        } catch (Exception error) {
            alert = new Alert("Error Creating", error.toString(), null, AlertType.WARNING);
            alert.setTimeout(Alert.FOREVER);
            display.setCurrent(alert);
        }
        try {
            byte[] outputRecord;
            String outputString[] = { "Adam", "Bob", "Mary" };
            int outputInteger[] = { 15, 10, 5 };
            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            DataOutputStream outputDataStream = new DataOutputStream(outputStream);
            for (int x = 0; x < 3; x++) {
                outputDataStream.writeUTF(outputString[x]);
                outputDataStream.writeInt(outputInteger[x]);
                outputDataStream.flush();
                outputRecord = outputStream.toByteArray();
                recordstore.addRecord(outputRecord, 0, outputRecord.length);
                outputStream.reset();
            }
            outputStream.close();
            outputDataStream.close();
        } catch (Exception error) {
            alert = new Alert("Error Writing", error.toString(), null, AlertType.WARNING);
            alert.setTimeout(Alert.FOREVER);
            display.setCurrent(alert);
        }
        try {
            String inputString;
            byte[] byteInputData = new byte[300];
            ByteArrayInputStream inputStream = new ByteArrayInputStream(byteInputData);
            DataInputStream inputDataStream = new DataInputStream(inputStream);
            if (recordstore.getNumRecords() > 0) {
                filter = new Filter("Mary");
                recordEnumeration = recordstore.enumerateRecords(filter, null, false);
                while (recordEnumeration.hasNextElement()) {
                    recordstore.getRecord(recordEnumeration.nextRecordId(), byteInputData, 0);
                    inputString = inputDataStream.readUTF() + " " + inputDataStream.readInt();
                    alert = new Alert("Reading", inputString, null, AlertType.WARNING);
                    alert.setTimeout(Alert.FOREVER);
                    display.setCurrent(alert);
                }
            }
            inputStream.close();
        } catch (Exception error) {
            alert = new Alert("Error Reading", error.toString(), null, AlertType.WARNING);
            alert.setTimeout(Alert.FOREVER);
            display.setCurrent(alert);
        }
        try {
            recordstore.closeRecordStore();
        } catch (Exception error) {
            alert = new Alert("Error Closing", error.toString(), null, AlertType.WARNING);
            alert.setTimeout(Alert.FOREVER);
            display.setCurrent(alert);
        }
        if (RecordStore.listRecordStores() != null) {
            try {
                RecordStore.deleteRecordStore("myRecordStore");
                filter.filterClose();
                recordEnumeration.destroy();
            } catch (Exception error) {
                alert = new Alert("Error Removing", error.toString(), null, AlertType.WARNING);
                alert.setTimeout(Alert.FOREVER);
                display.setCurrent(alert);
            }
        }
    }
}