Example usage for java.io DataOutputStream DataOutputStream

Introduction

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

Prototype

public DataOutputStream(OutputStream out)

Source Link

Document

Creates a new data output stream to write data to the specified underlying output stream.

Usage

From source file:com.splout.db.dnode.TCPStreamer.java

/**
 * This main method can be used for testing the TCP interface directly to a
 * local DNode. Will ask for protocol input from Stdin and print output to
 * Stdout//  w  w w  .j  ava2  s  . c om
 */
public static void main(String[] args) throws UnknownHostException, IOException, SerializationException {
    SploutConfiguration config = SploutConfiguration.get();
    Socket clientSocket = new Socket("localhost", config.getInt(DNodeProperties.STREAMING_PORT));

    DataInputStream inFromServer = new DataInputStream(new BufferedInputStream(clientSocket.getInputStream()));
    DataOutputStream outToServer = new DataOutputStream(
            new BufferedOutputStream(clientSocket.getOutputStream()));

    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    System.out.println("Enter tablespace: ");
    String tablespace = reader.readLine();

    System.out.println("Enter version number: ");
    long versionNumber = Long.parseLong(reader.readLine());

    System.out.println("Enter partition: ");
    int partition = Integer.parseInt(reader.readLine());

    System.out.println("Enter query: ");
    String query = reader.readLine();

    outToServer.writeUTF(tablespace);
    outToServer.writeLong(versionNumber);
    outToServer.writeInt(partition);
    outToServer.writeUTF(query);

    outToServer.flush();

    byte[] buffer = new byte[0];
    boolean read;
    do {
        read = false;
        int nBytes = inFromServer.readInt();
        if (nBytes > 0) {
            buffer = new byte[nBytes];
            int inRead = inFromServer.read(buffer);
            if (inRead > 0) {
                Object[] res = ResultSerializer.deserialize(ByteBuffer.wrap(buffer), Object[].class);
                read = true;
                System.out.println(Arrays.toString(res));
            }
        }
    } while (read);

    clientSocket.close();
}

From source file:Main.java

public static void writeBin(String fileName, byte[] data) {
    try {/*from  ww w. j ava2s  . com*/
        DataOutputStream out = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(fileName)));
        for (byte b : data) {
            out.writeByte(b);
        }
        out.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void killProcess(int pid) {
    Process sh = null;/*from ww w .ja v a  2s  . co  m*/
    DataOutputStream os = null;
    try {
        sh = Runtime.getRuntime().exec("su");
        os = new DataOutputStream(sh.getOutputStream());
        final String Command = "kill -9 " + pid + "\n";
        os.writeBytes(Command);
        os.flush();
        sh.waitFor();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void forceStopAPK(String pkgName) {
    Process sh = null;/*from   ww  w.j  a  va 2  s .co  m*/
    DataOutputStream os = null;
    try {
        sh = Runtime.getRuntime().exec("su");
        os = new DataOutputStream(sh.getOutputStream());
        final String Command = "am force-stop" + pkgName;
        os.writeBytes(Command);
        os.flush();
        sh.waitFor();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void RunAsRootNoOutput(String[] cmds) {
    try {/*from  w  w  w .  j  ava2s.c  om*/
        Process p = Runtime.getRuntime().exec("su");
        DataOutputStream os = new DataOutputStream(p.getOutputStream());
        for (String tmpCmd : cmds) {
            os.writeBytes(tmpCmd + "\n");
        }
        os.writeBytes("exit\n");
        os.flush();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void runAsRoot(String[] commands) throws IOException, InterruptedException {
    Process p = Runtime.getRuntime().exec("su");
    DataOutputStream os = new DataOutputStream(p.getOutputStream());
    for (String cmd : commands) {
        os.writeBytes(cmd + "\n");
    }/*from   w w w  .  j  ava  2  s .  c  o  m*/
    os.writeBytes("exit\n");
    os.flush();
    os.close();
    p.waitFor();
}

From source file:Main.java

public static void writeFile(File file, String string) throws IOException {
    file.getParentFile().mkdirs();//from w w  w  . j  a v a2s  .  co m
    DataOutputStream dout = new DataOutputStream(new FileOutputStream(file));
    dout.write(string.getBytes());
    dout.close();
}

From source file:Main.java

static void runCommandWithRoot(String command) {
    try {/*w ww .j av a  2s  .  c  o m*/
        Process p = Runtime.getRuntime().exec("su");
        DataOutputStream os = new DataOutputStream(p.getOutputStream());
        os.writeBytes(command);
        os.writeBytes("exit\n");
        os.flush();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void execCommand(String paramString) {
    try {/*from  w w w  .j  ava2 s  . c om*/
        String[] arrayOfString = new String[1];
        arrayOfString[0] = paramString;
        DataOutputStream localDataOutputStream = new DataOutputStream(
                Runtime.getRuntime().exec("su").getOutputStream());
        for (int i = 0;; i++) {
            if (i >= 1) {
                localDataOutputStream.writeBytes("exit\n");
                localDataOutputStream.flush();
                localDataOutputStream.wait();
                return;
            }
            localDataOutputStream.writeBytes(arrayOfString[i] + "\n");
            localDataOutputStream.flush();
        }
    } catch (Exception localException) {
    }
}

From source file:Main.java

private static void writeNonEmptyFile(final File file) {
    try {//from  w  ww .  ja va  2  s  . c  o m
        final OutputStream outputStream = new DataOutputStream(new FileOutputStream(file));
        final int expectedLength = 10;
        outputStream.write(expectedLength);
        // The negative beginning index is to accommodate the header. Fancy. Ever so fancy.
        for (int i = -3; i < expectedLength; i++)
            outputStream.write(0x0);
        outputStream.close();
    } catch (final IOException e) {
        throw new RuntimeException("Exception trying to create non-empty file!", e);
    }
}