Example usage for java.io FileInputStream read

Introduction

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

Prototype

public int read(byte b[]) throws IOException

Source Link

Document

Reads up to b.length bytes of data from this input stream into an array of bytes.

Usage

From source file:Main.java

@SuppressWarnings("unchecked")
public static Parcelable readParcelable(Context context, String fileName, ClassLoader classLoader) {
    Parcelable parcelable = null;/*from w  w w. ja va 2 s. c  o  m*/
    FileInputStream fis = null;
    ByteArrayOutputStream bos = null;
    try {
        fis = context.openFileInput(fileName);
        if (fis != null) {
            bos = new ByteArrayOutputStream();
            byte[] b = new byte[4096];
            int bytesRead;
            while ((bytesRead = fis.read(b)) != -1) {
                bos.write(b, 0, bytesRead);
            }

            byte[] data = bos.toByteArray();

            Parcel parcel = Parcel.obtain();
            parcel.unmarshall(data, 0, data.length);
            parcel.setDataPosition(0);
            parcelable = parcel.readParcelable(classLoader);
        }
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
        parcelable = null;
    } finally {
        if (fis != null)
            try {
                fis.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        if (bos != null)
            try {
                bos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
    }

    return parcelable;
}

From source file:cn.fql.utility.FileUtility.java

/**
 * read file to byte[] with specified file path
 *
 * @param filePath specified file path/*  ww  w  .  j a v a2s .com*/
 * @return <code>byte[]</code> file content
 */
public static byte[] readFile(String filePath) {
    File infoFile = new File(filePath);
    byte[] result = null;
    if (infoFile.exists()) {
        result = new byte[(int) infoFile.length()];
        try {
            FileInputStream fis = new FileInputStream(infoFile);
            fis.read(result);
            fis.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return result;
}

From source file:com.cisco.dbds.utils.ftp.FTPHandler.java

/**
 * Sftp_put.//  w  w  w .j av a  2 s . com
 *
 * @param host the host
 * @param user the user
 * @param pass the pass
 * @param lpath the lpath
 * @param rpath the rpath
 * @throws IOException Signals that an I/O exception has occurred.
 */
public static void sftp_put(String host, String user, String pass, String lpath, String rpath)
        throws IOException {
    File rfile = new File(rpath);
    File lfile = new File(lpath);
    System.out.println("rfile: " + rfile);
    if (!lfile.exists() || lfile.isDirectory()) {
        throw new IOException("Local file must be a regular file: " + lpath);
    }

    Connection ssh = new Connection(host);
    ssh.connect();
    ssh.authenticateWithPassword(user, pass);
    SFTPv3Client sftp = new SFTPv3Client(ssh);
    SFTPv3FileHandle file = sftp.createFileTruncate(rpath);

    long fileOffset = 0;
    byte[] src = new byte[32768];
    int i = 0;
    FileInputStream input = new FileInputStream(lfile);
    while ((i = input.read(src)) != -1) {
        sftp.write(file, fileOffset, src, 0, i);
        fileOffset += i;
    }

    input.close();
    sftp.closeFile(file);
    sftp.close();
}

From source file:Main.java

@SuppressWarnings("unchecked")
public static List<Parcelable> readParcelableList(Context context, String fileName, ClassLoader classLoader) {
    List<Parcelable> results = null;
    FileInputStream fis = null;
    ByteArrayOutputStream bos = null;
    try {//from w ww  .j  a  v  a  2  s  . co m
        fis = context.openFileInput(fileName);
        if (fis != null) {
            bos = new ByteArrayOutputStream();
            byte[] b = new byte[4096];
            int bytesRead;
            while ((bytesRead = fis.read(b)) != -1) {
                bos.write(b, 0, bytesRead);
            }

            byte[] data = bos.toByteArray();

            Parcel parcel = Parcel.obtain();
            parcel.unmarshall(data, 0, data.length);
            parcel.setDataPosition(0);
            results = parcel.readArrayList(classLoader);
        }
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
        results = null;
    } finally {
        if (fis != null)
            try {
                fis.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        if (bos != null)
            try {
                bos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
    }

    return results;
}

From source file:com.vmware.identity.openidconnect.sample.RelyingPartyInstaller.java

static PublicKey loadPublicKey(String file, String algorithm)
        throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {
    // Read Public Key.
    File filePublicKey = new File(file);
    FileInputStream fis = new FileInputStream(file);
    byte[] encodedPublicKey = new byte[(int) filePublicKey.length()];
    fis.read(encodedPublicKey);
    fis.close();/* w w  w . j a v  a2s.  c  om*/

    // Generate Public Key.
    KeyFactory keyFactory = KeyFactory.getInstance(algorithm);
    X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(encodedPublicKey);
    PublicKey publicKey = keyFactory.generatePublic(publicKeySpec);

    return publicKey;
}

From source file:Main.java

private static boolean moveFile(File oldPlace, File newPlace, boolean removeOld) {
    boolean removeNewFile = true;
    Log.i("cr3", "Moving file " + oldPlace.getAbsolutePath() + " to " + newPlace.getAbsolutePath());
    if (!oldPlace.exists()) {
        Log.i("cr3", "File " + oldPlace.getAbsolutePath() + " does not exist!");
        return false;
    }/*from w  ww.j  av a2 s  . co  m*/
    FileOutputStream os = null;
    FileInputStream is = null;
    try {
        if (!newPlace.createNewFile())
            return false; // cannot create file
        os = new FileOutputStream(newPlace);
        is = new FileInputStream(oldPlace);
        byte[] buf = new byte[0x10000];
        for (;;) {
            int bytesRead = is.read(buf);
            if (bytesRead <= 0)
                break;
            os.write(buf, 0, bytesRead);
        }
        removeNewFile = false;
        oldPlace.delete();
        return true;
    } catch (IOException e) {
        return false;
    } finally {
        try {
            if (os != null)
                os.close();
        } catch (IOException ee) {
            // ignore
        }
        try {
            if (is != null)
                is.close();
        } catch (IOException ee) {
            // ignore
        }
        if (removeNewFile)
            newPlace.delete();
    }
}

From source file:com.vmware.identity.openidconnect.sample.RelyingPartyInstaller.java

static PrivateKey loadPrivateKey(String file, String algorithm)
        throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {
    // Read Private Key.
    File filePrivateKey = new File(file);
    FileInputStream fis = new FileInputStream(file);
    byte[] encodedPrivateKey = new byte[(int) filePrivateKey.length()];
    fis.read(encodedPrivateKey);
    fis.close();/*  w w w .  ja v a  2 s.  c  om*/

    // Generate KeyPair.
    KeyFactory keyFactory = KeyFactory.getInstance(algorithm);
    PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(encodedPrivateKey);
    PrivateKey privateKey = keyFactory.generatePrivate(privateKeySpec);

    return privateKey;
}

From source file:outfox.dict.contest.util.FileUtils.java

/**
 * /*  w w  w . java  2 s  . co m*/
 * @param file
 * @return
 */
public static byte[] getBytesFromFile(File file) {
    byte[] byteArray = null;
    try {
        if (file == null) {
            return null;
        }
        FileInputStream in = new FileInputStream(file);
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        byte[] b = new byte[4096];
        int n;
        while ((n = in.read(b)) != -1) {
            out.write(b, 0, n);
        }
        byteArray = out.toByteArray();
        in.close();
        out.close();
    } catch (IOException e) {
        LOG.error("FileUtils.getBytesFromFile error...", e);
    }
    return byteArray;
}

From source file:edu.clemson.cs.nestbed.common.util.ZipUtils.java

private static void zipDirectory(File directory, String name, ZipOutputStream zos) throws IOException {
    // *MUST* append the trailing slash for a ZipEntry to identify an
    // entry as a directory.
    name += "/";/*from  ww w .  ja  v  a  2 s .c  o m*/

    zos.putNextEntry(new ZipEntry(name));
    zos.closeEntry();

    String[] entryList = directory.list();

    for (int i = 0; i < entryList.length; ++i) {
        File f = new File(directory, entryList[i]);

        if (f.isDirectory()) {
            zipDirectory(f, name + f.getName(), zos);
        } else {
            FileInputStream fis = new FileInputStream(f);
            ZipEntry entry = new ZipEntry(name + f.getName());
            byte[] buffer = new byte[BUFFER_SIZE];
            int bytesIn = 0;

            zos.putNextEntry(entry);

            while ((bytesIn = fis.read(buffer)) != -1) {
                zos.write(buffer, 0, bytesIn);
            }

            fis.close();
            zos.closeEntry();
        }
    }
}

From source file:Main.java

/**
 * read file to a string//from w ww . j  a va2s .  c  om
 * 
 * @param context
 * @param file
 * @return
 */
public static String loadString(File file) {
    if (null == file || !file.exists()) {
        return "";
    }
    FileInputStream fis = null;

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    try {
        fis = new FileInputStream(file);
        int restSize = fis.available();
        int bufSize = restSize > BUF_SIZE ? BUF_SIZE : restSize;
        byte[] buf = new byte[bufSize];
        while (fis.read(buf) != -1) {
            baos.write(buf);
            restSize -= bufSize;

            if (restSize <= 0)
                break;
            if (restSize < bufSize)
                bufSize = restSize;
            buf = new byte[bufSize];
        }
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (SecurityException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (fis != null) {
            try {
                fis.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    return baos.toString();
}