Example usage for java.io RandomAccessFile readFully

Introduction

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

Prototype

public final void readFully(byte b[]) throws IOException

Source Link

Document

Reads b.length bytes from this file into the byte array, starting at the current file pointer.

Usage

From source file:RawDataFromImageFilePDF.java

public static void main(String[] args) {
    Document document = new Document();
    try {/*from  w ww.ja va 2 s .c  om*/
        PdfWriter.getInstance(document, new FileOutputStream("RawDataFromImageFilePDF.pdf"));
        document.open();

        RandomAccessFile rf = new RandomAccessFile("logo.png", "r");
        int size = (int) rf.length();
        byte imext[] = new byte[size];
        rf.readFully(imext);
        rf.close();

        Image img1 = Image.getInstance(imext);
        img1.setAbsolutePosition(50, 500);
        document.add(img1);

    } catch (Exception e) {
        System.err.println(e.getMessage());
    }
    document.close();
}

From source file:RawDataFromImageFileAndManipulationPDF.java

public static void main(String[] args) {
    Document document = new Document();
    try {/*from  w w  w.  j a  v  a 2s .com*/
        PdfWriter.getInstance(document, new FileOutputStream("RawDataFromImageFileAndManipulationPDF.pdf"));
        document.open();

        RandomAccessFile rf = new RandomAccessFile("logo.png", "r");
        int size = (int) rf.length();
        byte imext[] = new byte[size];
        rf.readFully(imext);
        rf.close();

        for (int i = 0; i < imext.length; i++) {
            imext[i] = (byte) (imext[i] + 3);
        }

        Image img1 = Image.getInstance(100, 100, 3, 8, imext);
        img1.setAbsolutePosition(200, 200);
        document.add(img1);

    } catch (Exception e) {
        System.err.println(e.getMessage());
    }
    document.close();
}

From source file:SenBench.java

public static void main(String[] args) {
    try {//from ww w  . j a  v a 2 s. c o m
        if (args.length == 0) {
            System.out.println("usage: java SenBench file [file ..]");
            System.exit(2);
        }

        StringTagger tagger = StringTagger.getInstance(Locale.JAPANESE);

        long processed = 0;
        long nbytes = 0;
        long nchars = 0;

        long start = System.currentTimeMillis();
        for (int a = 0; a < args.length; a++) {
            String text = "";
            try {
                RandomAccessFile raf = new RandomAccessFile(args[a], "r");
                byte[] buf = new byte[(int) raf.length()];
                raf.readFully(buf);
                raf.close();
                text = new String(buf, encoding);
                nbytes += buf.length;
                nchars += text.length();
            } catch (IOException ioe) {
                log.error(ioe);
                continue;
            }

            long s_start = System.currentTimeMillis();
            for (int c = 0; c < repeat; c++)
                doWork(tagger, text);
            long s_end = System.currentTimeMillis();
            processed += (s_end - s_start);
        }
        long end = System.currentTimeMillis();
        System.out.println("number of files: " + args.length);
        System.out.println("number of repeat: " + repeat);
        System.out.println("number of bytes: " + nbytes);
        System.out.println("number of chars: " + nchars);
        System.out.println("total time elapsed: " + (end - start) + " msec.");
        System.out.println("analysis time: " + (processed) + " msec.");
    } catch (Exception e) {
        e.printStackTrace(System.err);
        System.exit(1);
    }
}

From source file:MeCabBench.java

public static void main(String[] args) {
    try {/*  ww  w  . j ava  2s  .  co  m*/
        if (args.length == 0) {
            System.out.println("usage: java MeCabBench file [file ..]");
            System.exit(2);
        }

        Tagger tagger = new Tagger(new String[] { "java", "-d", dicPath });

        long processed = 0;
        long nbytes = 0;
        long nchars = 0;

        long start = System.currentTimeMillis();
        for (int a = 0; a < args.length; a++) {
            String text = "";
            try {
                RandomAccessFile raf = new RandomAccessFile(args[a], "r");
                byte[] buf = new byte[(int) raf.length()];
                raf.readFully(buf);
                raf.close();
                text = new String(buf, encoding);
                nbytes += buf.length;
                nchars += text.length();
            } catch (IOException ioe) {
                log.error(ioe);
                continue;
            }

            long s_start = System.currentTimeMillis();
            for (int c = 0; c < repeat; c++)
                doWork(tagger, text);
            long s_end = System.currentTimeMillis();
            processed += (s_end - s_start);
        }
        long end = System.currentTimeMillis();
        System.out.println("number of files: " + args.length);
        System.out.println("number of repeat: " + repeat);
        System.out.println("number of bytes: " + nbytes);
        System.out.println("number of chars: " + nchars);
        System.out.println("total time elapsed: " + (end - start) + " msec.");
        System.out.println("analysis time: " + (processed) + " msec.");
    } catch (Exception e) {
        e.printStackTrace(System.err);
        System.exit(1);
    }
}

From source file:Main.java

public static void main(String[] args) {
    try {//  ww w.jav a 2s.c  om
        String s = "Hello world from java2s.com";

        RandomAccessFile raf = new RandomAccessFile("c:/test.txt", "rw");

        // write something in the file
        raf.writeUTF(s);

        // set the file pointer at 0 position
        raf.seek(0);

        // create an array equal to the length of raf
        byte[] arr = new byte[(int) raf.length()];

        // read the file
        raf.readFully(arr);

        // create a new string based on arr
        String s2 = new String(arr);

        System.out.println(s2);
        raf.close();
    } catch (IOException ex) {
        ex.printStackTrace();
    }

}

From source file:org.commoncrawl.service.queryserver.master.S3Helper.java

public static void main(String[] args) {
    File arcFile = new File(args[0]);
    long offset = Long.parseLong(args[1]);
    long contentSize = Long.parseLong(args[2]);

    try {//w  w w  .ja va2 s  .  c  o  m
        RandomAccessFile fileHandle = new RandomAccessFile(arcFile, "r");

        fileHandle.seek(Math.max(offset - 10, 0));

        byte data[] = new byte[(int) contentSize + 10];
        fileHandle.readFully(data);

        ByteBuffer buffer = ByteBuffer.wrap(data);
        buffer.position(0);

        int position = scanForGZIPHeader(buffer.slice());

        buffer.position(position);

        StreamingArcFileReader reader = new StreamingArcFileReader(false);
        reader.available(buffer);
        ArcFileItem nextItem = reader.getNextItem();
        System.out.println(nextItem.getUri());

    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

From source file:Main.java

/**
 * RandomAccessFile seek and readFully/*from  w  w  w. j a v  a  2  s.co  m*/
 *
 * @param raf
 * @param index
 * @param buffer
 * @throws IOException
 */
private static void readFully(RandomAccessFile raf, long index, byte[] buffer) throws IOException {
    raf.seek(index);
    raf.readFully(buffer);
}

From source file:Main.java

private static String readInstallationFile(File installation) throws IOException {
    RandomAccessFile f = new RandomAccessFile(installation, "r");
    byte[] bytes = new byte[(int) f.length()];
    f.readFully(bytes);
    f.close();//from  ww w. jav  a 2 s. co  m
    return new String(bytes);
}

From source file:Main.java

private static String readSaltFromFile(File file) throws IOException {
    RandomAccessFile accessFile = new RandomAccessFile(file, "r");
    byte[] bs = new byte[(int) accessFile.length()];
    accessFile.readFully(bs);
    accessFile.close();/*  www .  jav  a 2 s  .co m*/
    return new String(bs);
}

From source file:Main.java

private static String readInstallationFile(File installation) throws IOException {
    RandomAccessFile accessFile = new RandomAccessFile(installation, "r");
    byte[] bs = new byte[(int) accessFile.length()];
    accessFile.readFully(bs);
    accessFile.close();// w  ww.j a  v  a 2 s  .c om
    return new String(bs);
}