Example usage for java.io InputStream read

Introduction

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

Prototype

public int read(byte b[]) throws IOException

Source Link

Document

Reads some number of bytes from the input stream and stores them into the buffer array b.

Usage

From source file:Main.java

public static byte[] readBytes(InputStream is) throws IOException {
    byte[] buffer;

    buffer = new byte[is.available()];
    is.read(buffer);
    is.close();//from www  .  j  av  a 2 s .  c  om

    return buffer;
}

From source file:Main.java

/**
 * Read input from input stream and write it to output stream 
 * until there is no more input from input stream.
 *
 * @param is input stream the input stream to read from.
 * @param os output stream the output stream to write to.
 * @param buf the byte array to use as a buffer
 *///from   w  w  w. j a  v a2 s .  co  m
public static void flow(InputStream is, OutputStream os, byte[] buf) throws IOException {
    int numRead;
    while ((numRead = is.read(buf)) >= 0) {
        os.write(buf, 0, numRead);
    }
}

From source file:Main.java

public static byte[] read(File file) throws IOException {
    byte[] buffer = new byte[(int) file.length()];
    InputStream ios = null;
    try {//  w w  w.ja  v a 2 s .c o m
        ios = new FileInputStream(file);
        if (ios.read(buffer) == -1)
            throw new IOException("EOF reached while trying to read the whole file");
    } finally {
        try {
            if (ios != null)
                ios.close();
        } catch (IOException e) {
        }
    }
    return buffer;
}

From source file:MainClass.java

public static void copy(InputStream in, OutputStream out) throws IOException {

    byte[] buffer = new byte[1024];
    while (true) {
        int bytesRead = in.read(buffer);
        if (bytesRead == -1)
            break;
        out.write(buffer, 0, bytesRead);
    }//from ww w.j a  va  2 s.  c  o m
}

From source file:Main.java

public static String md5Calc(File f) {
    int i;// www .j a  v a  2s .  c om

    byte[] buffer = new byte[1024];
    int read = 0;
    String md5hash;
    try {
        MessageDigest digest = MessageDigest.getInstance("MD5");
        InputStream is = new FileInputStream(f);
        while ((read = is.read(buffer)) > 0) {
            digest.update(buffer, 0, read);
        }
        byte[] md5sum = digest.digest();
        BigInteger bigInt = new BigInteger(1, md5sum);
        md5hash = bigInt.toString(16);
        is.close();
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }

    if (md5hash.length() != 33) {
        String tmp = "";
        for (i = 1; i < (33 - md5hash.length()); i++) {
            tmp = tmp.concat("0");
        }
        md5hash = tmp.concat(md5hash);
    }

    return md5hash;
}

From source file:Main.java

public static String readFile(Context context, String name) throws IOException {
    File file = context.getFileStreamPath(name);
    InputStream is = new FileInputStream(file);

    byte b[] = new byte[(int) file.length()];

    is.read(b);
    is.close();//from   w w w  .j  av a2s  .  c om

    String string = new String(b);

    return string;
}

From source file:Main.java

public static String readAsset(AssetManager assets, String path) throws IOException {
    InputStream is = assets.open(path);
    int size = is.available();
    byte[] buffer = new byte[size];
    is.read(buffer);
    is.close();//www .j  av  a 2 s.co  m
    return new String(buffer);
}

From source file:Main.java

public static void copyStream(InputStream is, OutputStream os, byte[] buffer) throws IOException {
    while (true) {
        int count = is.read(buffer);
        if (count != -1) {
            os.write(buffer, 0, count);//from  w  w  w.  j a  v a  2  s .c  om
        } else {
            return;
        }
    }
}

From source file:Main.java

public static byte[] loadIntoBytes(String fileName) {
    AssetManager assetManager = context.getAssets();
    try {//  www.ja  v a  2  s .c  o  m
        InputStream is = assetManager.open(fileName);
        byte buf[] = new byte[is.available()];
        is.read(buf);
        return buf;
    } catch (IOException e) {
    }
    return null;
}

From source file:Main.java

/**
 * DB test/* w w  w  .j a  va  2  s.  co  m*/
 */
public static void runBackup(Context context) {
    File file = context.getDatabasePath("PhotoDeskHiddenFolder.db");
    int size = (int) file.length();

    String path = Environment.getExternalStorageDirectory() + "/PhotoDesk/";
    try {
        byte[] buffer = new byte[size];
        InputStream inputStream = new FileInputStream(file);
        inputStream.read(buffer);
        inputStream.close();

        File outputDBDirectory = new File(path);
        if (!outputDBDirectory.isDirectory())
            outputDBDirectory.mkdir();

        path += "test.db";

        File outputFile = new File(path);
        FileOutputStream outputStream = new FileOutputStream(outputFile);
        outputStream.write(buffer);
        outputStream.flush();
        outputStream.close();

    } catch (Exception e) {
    }
}