Example usage for java.io DataOutputStream close

Introduction

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

Prototype

@Override
public void close() throws IOException 

Source Link

Document

Closes this output stream and releases any system resources associated with the stream.

Usage

From source file:Main.java

public static void main(String[] atgs) throws Exception {
    DataOutputStream out = new DataOutputStream(new BufferedOutputStream(new FileOutputStream("java.txt")));
    out.writeUTF("");
    out.writeBytes("a");
    out.writeChars("aaa");
    out.close();
    DataInputStream in = new DataInputStream(new BufferedInputStream(new FileInputStream("java.txt")));
    System.out.println(in.readUTF());
    byte[] buf = new byte[1024];
    int len = in.read(buf);
    System.out.println(new String(buf, 0, len));
    in.close();/*from   w  w  w.  j  av a2s  .  c  o  m*/
}

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From source file:InputOutputDemoBinaryFile.java

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

    //Write primitive values to a binary file "java2s.dat":
    DataOutputStream dos = new DataOutputStream(new FileOutputStream("java2s.dat"));
    dos.writeInt(228);//from  w ww. j av  a  2 s  .c o m
    dos.writeChar(' ');
    dos.writeUTF("Java Source and Support at www.java2s.com");
    dos.close();
    //Read primitive values from binary file "java2s.dat":
    DataInputStream dis = new DataInputStream(new FileInputStream("java2s.dat"));
    System.out.println(dis.readInt() + "|" + dis.readChar() + "|" + dis.readUTF());
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    FileOutputStream fos = new FileOutputStream("C:/Bytes.txt");
    DataOutputStream dos = new DataOutputStream(fos);

    dos.writeBytes("this is a test");
    int bytesWritten = dos.size();
    System.out.println("Total " + bytesWritten + " bytes are written to stream.");
    dos.close();
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    URL url = new URL("http://localhost:8080/postedresults.jsp");
    URLConnection conn = url.openConnection();
    conn.setDoInput(true);// w ww  . j  a v  a  2  s.com
    conn.setDoOutput(true);
    conn.setUseCaches(false);
    conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

    DataOutputStream out = new DataOutputStream(conn.getOutputStream());
    String content = "CONTENT=HELLO JSP !&ONEMORECONTENT =HELLO POST !";

    out.writeBytes(content);
    out.flush();
    out.close();

    DataInputStream in = new DataInputStream(conn.getInputStream());
    String str;
    while (null != ((str = in.readUTF()))) {
        System.out.println(str);
    }
    in.close();
}

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From source file:org.wso2.charon3.samples.group.sample01.CreateGroupSample.java

public static void main(String[] args) {
    try {//from www . j  a v a 2s  .  c  o  m
        String url = "http://localhost:8080/scim/v2/Groups";
        URL obj = new URL(url);
        HttpURLConnection con = (HttpURLConnection) obj.openConnection();

        // Setting basic post request
        con.setRequestMethod("POST");
        con.setRequestProperty("Content-Type", "application/scim+json");

        // Send post request
        con.setDoOutput(true);
        DataOutputStream wr = new DataOutputStream(con.getOutputStream());
        wr.writeBytes(createRequestBody);
        wr.flush();
        wr.close();

        int responseCode = con.getResponseCode();

        BufferedReader in;
        if (responseCode == HttpURLConnection.HTTP_CREATED) { // success
            in = new BufferedReader(new InputStreamReader(con.getInputStream()));
        } else {
            in = new BufferedReader(new InputStreamReader(con.getErrorStream()));
        }
        String inputLine;
        StringBuffer response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();

        //printing result from response
        System.out.println("Response Code : " + responseCode);
        System.out.println("Response Message : " + con.getResponseMessage());
        System.out.println("Response Content : " + response.toString());

    } catch (ProtocolException e) {
        e.printStackTrace();
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

---

From source file:com.linkedin.pinot.perf.MultiValueReaderWriterBenchmark.java

public static void main(String[] args) throws Exception {
    List<String> lines = IOUtils.readLines(new FileReader(new File(args[0])));
    int totalDocs = lines.size();
    int max = Integer.MIN_VALUE;
    int maxNumberOfMultiValues = Integer.MIN_VALUE;
    int totalNumValues = 0;
    int data[][] = new int[totalDocs][];
    for (int i = 0; i < lines.size(); i++) {
        String line = lines.get(i);
        String[] split = line.split(",");
        totalNumValues = totalNumValues + split.length;
        if (split.length > maxNumberOfMultiValues) {
            maxNumberOfMultiValues = split.length;
        }/* w  ww  .java  2  s  . co  m*/
        data[i] = new int[split.length];
        for (int j = 0; j < split.length; j++) {
            String token = split[j];
            int val = Integer.parseInt(token);
            data[i][j] = val;
            if (val > max) {
                max = val;
            }
        }
    }
    int maxBitsNeeded = (int) Math.ceil(Math.log(max) / Math.log(2));
    int size = 2048;
    int[] offsets = new int[size];
    int bitMapSize = 0;
    File outputFile = new File("output.mv.fwd");

    FixedBitSkipListSCMVWriter fixedBitSkipListSCMVWriter = new FixedBitSkipListSCMVWriter(outputFile,
            totalDocs, totalNumValues, maxBitsNeeded);

    for (int i = 0; i < totalDocs; i++) {
        fixedBitSkipListSCMVWriter.setIntArray(i, data[i]);
        if (i % size == size - 1) {
            MutableRoaringBitmap rr1 = MutableRoaringBitmap.bitmapOf(offsets);
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            DataOutputStream dos = new DataOutputStream(bos);
            rr1.serialize(dos);
            dos.close();
            //System.out.println("Chunk " + i / size + " bitmap size:" + bos.size());
            bitMapSize += bos.size();
        } else if (i == totalDocs - 1) {
            MutableRoaringBitmap rr1 = MutableRoaringBitmap.bitmapOf(Arrays.copyOf(offsets, i % size));
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            DataOutputStream dos = new DataOutputStream(bos);
            rr1.serialize(dos);
            dos.close();
            //System.out.println("Chunk " + i / size + " bitmap size:" + bos.size());
            bitMapSize += bos.size();
        }
    }
    fixedBitSkipListSCMVWriter.close();
    System.out.println("Output file size:" + outputFile.length());
    System.out.println("totalNumberOfDoc\t\t\t:" + totalDocs);
    System.out.println("totalNumberOfValues\t\t\t:" + totalNumValues);
    System.out.println("chunk size\t\t\t\t:" + size);
    System.out.println("Num chunks\t\t\t\t:" + totalDocs / size);
    int numChunks = totalDocs / size + 1;
    int totalBits = (totalNumValues * maxBitsNeeded);
    int dataSizeinBytes = (totalBits + 7) / 8;

    System.out.println("Raw data size with fixed bit encoding\t:" + dataSizeinBytes);
    System.out.println("\nPer encoding size");
    System.out.println();
    System.out.println("size (offset + length)\t\t\t:" + ((totalDocs * (4 + 4)) + dataSizeinBytes));
    System.out.println();
    System.out.println("size (offset only)\t\t\t:" + ((totalDocs * (4)) + dataSizeinBytes));
    System.out.println();
    System.out.println("bitMapSize\t\t\t\t:" + bitMapSize);
    System.out.println("size (with bitmap)\t\t\t:" + (bitMapSize + (numChunks * 4) + dataSizeinBytes));

    System.out.println();
    System.out.println("Custom Bitset\t\t\t\t:" + (totalNumValues + 7) / 8);
    System.out.println("size (with custom bitset)\t\t\t:"
            + (((totalNumValues + 7) / 8) + (numChunks * 4) + dataSizeinBytes));

}

---

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    String query = "name=yourname&email=youremail@yourserver.com";

    URLConnection uc = new URL("http:// your form ").openConnection();
    uc.setDoOutput(true);//from  www .j ava 2  s.  c om
    uc.setDoInput(true);
    uc.setAllowUserInteraction(false);
    DataOutputStream dos = new DataOutputStream(uc.getOutputStream());

    // The POST line, the Accept line, and
    // the content-type headers are sent by the URLConnection.
    // We just need to send the data
    dos.writeBytes(query);
    dos.close();

    // Read the response
    DataInputStream dis = new DataInputStream(uc.getInputStream());
    String nextline;
    while ((nextline = dis.readLine()) != null) {
        System.out.println(nextline);
    }
    dis.close();
}

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From source file:org.wso2.charon3.samples.user.sample01.CreateUserSample.java

public static void main(String[] args) {
    try {/*from w w  w. ja  v a  2  s.co m*/
        String url = "http://localhost:8080/scim/v2/Users";
        URL obj = new URL(url);
        HttpURLConnection con = (HttpURLConnection) obj.openConnection();

        // Setting basic post request
        con.setRequestMethod("POST");
        con.setRequestProperty("Content-Type", "application/scim+json");

        // Send post request
        con.setDoOutput(true);
        DataOutputStream wr = new DataOutputStream(con.getOutputStream());
        wr.writeBytes(createRequestBody);
        wr.flush();
        wr.close();

        int responseCode = con.getResponseCode();

        BufferedReader in;
        if (responseCode == HttpURLConnection.HTTP_CREATED) { // success
            in = new BufferedReader(new InputStreamReader(con.getInputStream()));
        } else {
            in = new BufferedReader(new InputStreamReader(con.getErrorStream()));
        }
        String inputLine;
        StringBuffer response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();

        //printing result from response
        System.out.println("Response Code : " + responseCode);
        System.out.println("Response Message : " + con.getResponseMessage());
        System.out.println("Response Content : " + response.toString());

    } catch (ProtocolException e) {
        e.printStackTrace();
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

---

From source file:RandomFileTest.java

public static void main(String[] args) {
    Employee[] staff = new Employee[3];

    staff[0] = new Employee("Harry Hacker", 35000);
    staff[1] = new Employee("Carl Cracker", 75000);
    staff[2] = new Employee("Tony Tester", 38000);
    try {/*from w w w  .  j a  va2s .c om*/
        DataOutputStream out = new DataOutputStream(new FileOutputStream("employee.dat"));
        for (int i = 0; i < staff.length; i++)
            staff[i].writeData(out);
        out.close();
    } catch (IOException e) {
        System.out.print("Error: " + e);
        System.exit(1);
    }

    try {
        RandomAccessFile in = new RandomAccessFile("employee.dat", "r");
        int count = (int) (in.length() / Employee.RECORD_SIZE);
        Employee[] newStaff = new Employee[count];

        for (int i = count - 1; i >= 0; i--) {
            newStaff[i] = new Employee();
            in.seek(i * Employee.RECORD_SIZE);
            newStaff[i].readData(in);
        }
        for (int i = 0; i < newStaff.length; i++)
            newStaff[i].print();
    } catch (IOException e) {
        System.out.print("Error: " + e);
        System.exit(1);
    }
}

---

From source file:RandomFileTest.java

public static void main(String[] args) {
    Employee[] staff = new Employee[3];

    staff[0] = new Employee("Carl Cracker", 75000, 1987, 12, 15);
    staff[1] = new Employee("Harry Hacker", 50000, 1989, 10, 1);
    staff[2] = new Employee("Tony Tester", 40000, 1990, 3, 15);

    try {// ww w . jav  a 2s.co m
        // save all employee records to the file employee.dat
        DataOutputStream out = new DataOutputStream(new FileOutputStream("employee.dat"));
        for (Employee e : staff)
            e.writeData(out);
        out.close();

        // retrieve all records into a new array
        RandomAccessFile in = new RandomAccessFile("employee.dat", "r");
        // compute the array size
        int n = (int) (in.length() / Employee.RECORD_SIZE);
        Employee[] newStaff = new Employee[n];

        // read employees in reverse order
        for (int i = n - 1; i >= 0; i--) {
            newStaff[i] = new Employee();
            in.seek(i * Employee.RECORD_SIZE);
            newStaff[i].readData(in);
        }
        in.close();

        // print the newly read employee records
        for (Employee e : newStaff)
            System.out.println(e);
    } catch (IOException e) {
        e.printStackTrace();
    }
}

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