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:Main.java

public static byte[] convertIntToByteArray(int my_int) throws IOException {
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    DataOutputStream dos = new DataOutputStream(bos);
    dos.writeInt(my_int);
    dos.close();/*from   w ww .  j  av  a  2s .  c o m*/
    byte[] int_bytes = bos.toByteArray();
    bos.close();
    return int_bytes;
}

From source file:Main.java

public static Process execRuntimeProcess(String cmd) {
    Runtime localRuntime = Runtime.getRuntime();
    try {/*from w  w  w  .  j  a v a 2 s .c  om*/
        Process pro = localRuntime.exec("su");
        DataOutputStream out = new DataOutputStream(pro.getOutputStream());
        out.writeBytes(cmd + " \n");
        return pro;
    } catch (IOException e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

public static byte[] intToByteArray(int number) {
    try {/*from  ww  w. ja va 2 s.  c o m*/
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        DataOutputStream dos = new DataOutputStream(bos);
        dos.writeInt(number);
        dos.flush();
        // lenth have to be 2 byte
        byte[] d = bos.toByteArray();
        dos.close();

        return d;
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

From source file:Main.java

public static byte[] longToByteArray(long number) {
    try {/* w w  w  .ja v a  2s  .c o m*/
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        DataOutputStream dos = new DataOutputStream(bos);
        dos.writeLong(number);
        dos.flush();
        // lenth have to be 2 byte
        byte[] d = bos.toByteArray();
        dos.close();

        return d;
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

From source file:Main.java

public static byte[] shortToByteArray(short number) {
    try {/*from  w w  w  .  ja  v  a  2s  . c  o  m*/
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        DataOutputStream dos = new DataOutputStream(bos);
        dos.writeShort(number);
        dos.flush();
        // lenth have to be 2 byte
        byte[] d = bos.toByteArray();
        dos.close();

        return d;
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

From source file:Main.java

public static boolean runWithRoot(String command) {
    int result = -1;

    Process process = null;//  ww  w.  j  av a2  s.com
    DataOutputStream os = null;
    try {
        process = Runtime.getRuntime().exec("su");
        os = new DataOutputStream(process.getOutputStream());
        os.writeBytes(command + "\n");
        os.writeBytes("exit\n");
        os.flush();
        result = process.waitFor();
    } catch (Exception e) {
        return false;
    } finally {
        if (process != null) {
            process.destroy();
        }
    }

    return result == 1;
}

From source file:Main.java

public static String runAsRoot(String[] cmds) throws Exception {
    Process p = Runtime.getRuntime().exec("su");
    DataOutputStream os = new DataOutputStream(p.getOutputStream());
    InputStream is = p.getInputStream();
    String result = null;/*from  www  .  j  av a 2  s  .  c  o  m*/
    for (String tmpCmd : cmds) {
        os.writeBytes(tmpCmd + "\n");
        int readed = 0;
        byte[] buff = new byte[4096];
        while (is.available() <= 0) {
            try {
                Thread.sleep(5000);
            } catch (Exception ex) {
            }
        }

        while (is.available() > 0) {
            readed = is.read(buff);
            if (readed <= 0)
                break;
            String seg = new String(buff, 0, readed);
            result = seg; //result is a string to show in textview
        }
    }
    os.writeBytes("exit\n");
    os.flush();
    return result;
}

From source file:Main.java

public static boolean isRoot() {
    Process process = null;//from   ww  w . j  a  va 2  s  . c  o  m
    DataOutputStream dos = null;
    try {
        process = Runtime.getRuntime().exec("su");
        dos = new DataOutputStream(process.getOutputStream());
        dos.writeBytes("exit\n");
        dos.flush();
        int exitValue = process.waitFor();
        if (exitValue == 0) {
            return true;
        }
    } catch (IOException e) {

    } catch (InterruptedException e) {
        e.printStackTrace();
    } finally {
        if (dos != null) {
            try {
                dos.close();
            } catch (IOException e) {
            }
        }
    }
    return false;
}

From source file:Main.java

public static boolean executeAsRoot(String command) {
    try {//from   ww  w .j a  va  2 s.  c  o  m

        Process suProcess = Runtime.getRuntime().exec("su");
        DataOutputStream os = new DataOutputStream(suProcess.getOutputStream());

        os.writeBytes(command + "\n");
        os.flush();
        Log.d("ROOT", command);

        os.writeBytes("exit\n");
        os.flush();

        try {
            int suProcessRet = suProcess.waitFor();
            if (255 != suProcessRet)
                return true;
            else
                return false;
        } catch (Exception ex) {
            Log.w("ROOT-ERROR", ex);
        }
    } catch (IOException ex) {
        Log.w("ROOT", "Can't get root access", ex);
    } catch (SecurityException ex) {
        Log.w("ROOT", "Can't get root access", ex);
    } catch (Exception ex) {
        Log.w("ROOT", "Error executing internal operation", ex);
    }
    return false;
}

From source file:Main.java

public static int execRootCmdSilent(String cmd) {

    int result = -1;
    DataOutputStream dos = null;//from  w w w.  ja va2s.  c om

    try {
        Process p = Runtime.getRuntime().exec("su");
        dos = new DataOutputStream(p.getOutputStream());

        dos.writeBytes(cmd + "\n");
        dos.flush();
        dos.writeBytes("exit\n");
        dos.flush();
        p.waitFor();
        result = p.exitValue();
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (dos != null) {
            try {
                dos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return result;
}