Example usage for java.lang String String

Introduction

In this page you can find the example usage for java.lang String String.

Prototype

public String(byte bytes[], int offset, int length) 

Source Link

Document

Constructs a new String by decoding the specified subarray of bytes using the platform's default charset.

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();/*from  ww w.j  av  a2s. c o  m*/
    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();
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    int mcPort = 12345;
    String mcIPStr = "230.1.1.1";
    MulticastSocket mcSocket = null;
    InetAddress mcIPAddress = null;
    mcIPAddress = InetAddress.getByName(mcIPStr);
    mcSocket = new MulticastSocket(mcPort);
    System.out.println("Multicast Receiver running at:" + mcSocket.getLocalSocketAddress());
    mcSocket.joinGroup(mcIPAddress);/* w  ww. ja v a 2  s  . co m*/

    DatagramPacket packet = new DatagramPacket(new byte[1024], 1024);

    System.out.println("Waiting for a  multicast message...");
    mcSocket.receive(packet);
    String msg = new String(packet.getData(), packet.getOffset(), packet.getLength());
    System.out.println("[Multicast  Receiver] Received:" + msg);

    mcSocket.leaveGroup(mcIPAddress);
    mcSocket.close();
}

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From source file:Main.java

public static void main(String args[]) throws Exception {
    SAXParserFactory factory = SAXParserFactory.newInstance();
    SAXParser saxParser = factory.newSAXParser();
    DefaultHandler handler = new DefaultHandler() {
        public void startElement(String uri, String localName, String qName, Attributes attributes)
                throws SAXException {
            System.out.println(qName);
        }/*from w  ww .  j av a 2 s .c  o m*/

        public void characters(char ch[], int start, int length) throws SAXException {
            System.out.println(new String(ch, start, length));
        }
    };

    saxParser.parse(args[0], handler);
}

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From source file:UDPReceive.java

public static void main(String args[]) {
    try {/*from   ww  w . j a  va 2  s .co  m*/
        int port = 90;

        // Create a socket to listen on the port.
        DatagramSocket dsocket = new DatagramSocket(port);

        // Create a buffer to read datagrams into. If a
        // packet is larger than this buffer, the
        // excess will simply be discarded!
        byte[] buffer = new byte[2048];

        // Create a packet to receive data into the buffer
        DatagramPacket packet = new DatagramPacket(buffer, buffer.length);

        // Now loop forever, waiting to receive packets and printing them.
        while (true) {
            // Wait to receive a datagram
            dsocket.receive(packet);

            // Convert the contents to a string, and display them
            String msg = new String(buffer, 0, packet.getLength());
            System.out.println(packet.getAddress().getHostName() + ": " + msg);

            // Reset the length of the packet before reusing it.
            packet.setLength(buffer.length);
        }
    } catch (Exception e) {
        System.err.println(e);
    }
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    SAXParser parser = SAXParserFactory.newInstance().newSAXParser();
    parser.parse(new File("test.xml"), new DefaultHandler() {

        @Override//w w  w . jav  a 2 s . co  m
        public void startElement(String uri, String localName, String qName, Attributes atts)
                throws SAXException {
            if (qName.equals("passenger")) {
                System.out.println("id = " + atts.getValue(0));
            }
        }

        @Override
        public void endElement(String uri, String localName, String qName) throws SAXException {
        }

        @Override
        public void characters(char[] ch, int start, int length) throws SAXException {
            String text = new String(ch, start, length);
            if (!text.trim().isEmpty()) {
                System.out.println("name " + text);
            }
        }
    });
}

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From source file:ChatClient.java

  public static void main(String[] args) throws Exception {
  DatagramSocket s = new DatagramSocket();
  byte[] buf = new byte[1000];
  DatagramPacket dp = new DatagramPacket(buf, buf.length);

  InetAddress hostAddress = InetAddress.getByName("localhost");
  while (true) {// ww w .java2 s  . c  om
    BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
    String outMessage = stdin.readLine();

    if (outMessage.equals("bye"))
      break;
    String outString = "Client say: " + outMessage;
    buf = outString.getBytes();

    DatagramPacket out = new DatagramPacket(buf, buf.length, hostAddress, 9999);
    s.send(out);

    s.receive(dp);
    String rcvd = "rcvd from " + dp.getAddress() + ", " + dp.getPort() + ": "
        + new String(dp.getData(), 0, dp.getLength());
    System.out.println(rcvd);
  }
}

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From source file:MainClass.java

public static void main(String args[]) {
    try {/*from w w w  . j a  v  a 2 s. c  o  m*/
        SAXParserFactory factory = SAXParserFactory.newInstance();
        SAXParser saxParser = factory.newSAXParser();
        DefaultHandler handler = new DefaultHandler() {
            boolean name = false;

            public void startElement(String uri, String localName, String qName, Attributes attributes)
                    throws SAXException {
                if (qName.equalsIgnoreCase("NAME")) {
                    name = true;
                }
            }

            public void characters(char ch[], int start, int length) throws SAXException {
                if (name) {
                    System.out.println("Name: " + new String(ch, start, length));
                    name = false;
                }
            }
        };

        saxParser.parse(new InputSource(new StringReader(xmlString)), handler);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:NameLister.java

public static void main(String args[]) {

    if (args.length != 1) {
        System.err.println("Usage: java NameLister xmlfile.xml");
        System.exit(-1);//from   ww w . ja v a  2  s.c o  m
    }

    try {

        SAXParserFactory factory = SAXParserFactory.newInstance();
        SAXParser saxParser = factory.newSAXParser();

        DefaultHandler handler = new DefaultHandler() {
            boolean name = false;

            public void startElement(String uri, String localName, String qName, Attributes attributes)
                    throws SAXException {
                if (qName.equalsIgnoreCase("NAME")) {
                    name = true;
                }
            }

            public void characters(char ch[], int start, int length) throws SAXException {
                if (name) {
                    System.out.println("Name: " + new String(ch, start, length));
                    name = false;
                }
            }
        };

        saxParser.parse(args[0], handler);

    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:ChatClient.java

public static void main(String[] args) throws Exception {
        int PORT = 4000;
        byte[] buf = new byte[1000];
        DatagramPacket dgp = new DatagramPacket(buf, buf.length);
        DatagramSocket sk;/*w ww.j av a 2 s.c om*/

        sk = new DatagramSocket(PORT);
        System.out.println("Server started");
        while (true) {
            sk.receive(dgp);
            String rcvd = new String(dgp.getData(), 0, dgp.getLength()) + ", from address: " + dgp.getAddress()
                    + ", port: " + dgp.getPort();
            System.out.println(rcvd);

            BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
            String outMessage = stdin.readLine();
            buf = ("Server say: " + outMessage).getBytes();
            DatagramPacket out = new DatagramPacket(buf, buf.length, dgp.getAddress(), dgp.getPort());
            sk.send(out);
        }
    }

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From source file:test1.ApacheHttpRestClient2.java

public final static void main(String[] args) {

    HttpClient httpClient = new DefaultHttpClient();
    try {/*from   w  w w  . j a v a  2 s.  c  o m*/
        // this ona api call returns results in a JSON format
        HttpGet httpGetRequest = new HttpGet("https://api.ona.io/api/v1/users");

        // Execute HTTP request
        HttpResponse httpResponse = httpClient.execute(httpGetRequest);

        System.out.println("------------------HTTP RESPONSE----------------------");
        System.out.println(httpResponse.getStatusLine());
        System.out.println("------------------HTTP RESPONSE----------------------");

        // Get hold of the response entity
        HttpEntity entity = httpResponse.getEntity();

        // If the response does not enclose an entity, there is no need
        // to bother about connection release
        byte[] buffer = new byte[1024];
        if (entity != null) {
            InputStream inputStream = entity.getContent();
            try {
                int bytesRead = 0;
                BufferedInputStream bis = new BufferedInputStream(inputStream);
                while ((bytesRead = bis.read(buffer)) != -1) {
                    String chunk = new String(buffer, 0, bytesRead);
                    FileWriter file = new FileWriter("C:\\Users\\fred\\Desktop\\webicons\\output.txt");
                    //file.write(chunk.toJSONString());
                    file.write(chunk.toCharArray());
                    file.flush();
                    file.close();

                    System.out.print(chunk);
                    System.out.println(chunk);
                }
            } catch (IOException ioException) {
                // In case of an IOException the connection will be released
                // back to the connection manager automatically
                ioException.printStackTrace();
            } catch (RuntimeException runtimeException) {
                // In case of an unexpected exception you may want to abort
                // the HTTP request in order to shut down the underlying
                // connection immediately.
                httpGetRequest.abort();
                runtimeException.printStackTrace();
            }
            //          try {
            //              FileWriter file = new FileWriter("C:\\Users\\fred\\Desktop\\webicons\\output.json");
            //                file.write(bis.toJSONString());
            //                file.flush();
            //                file.close();
            //
            //                System.out.print(bis);
            //          } catch (Exception e) {
            //          }

            finally {
                // Closing the input stream will trigger connection release
                try {
                    inputStream.close();
                } catch (Exception ignore) {
                }
            }
        }
    } catch (ClientProtocolException e) {
        // thrown by httpClient.execute(httpGetRequest)
        e.printStackTrace();
    } catch (IOException e) {
        // thrown by entity.getContent();
        e.printStackTrace();
    } finally {
        // When HttpClient instance is no longer needed,
        // shut down the connection manager to ensure
        // immediate deallocation of all system resources
        httpClient.getConnectionManager().shutdown();
    }
}

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