Example usage for java.io FileInputStream FileInputStream

Introduction

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

Prototype

public FileInputStream(FileDescriptor fdObj)

Source Link

Document

Creates a FileInputStream by using the file descriptor fdObj, which represents an existing connection to an actual file in the file system.

Usage

From source file:Main.java

public static void main(String args[]) throws IOException {
    SequenceInputStream inStream;
    FileInputStream f1 = new FileInputStream("ByteArrayIOApp.java");
    FileInputStream f2 = new FileInputStream("FileIOApp.java");
    inStream = new SequenceInputStream(f1, f2);
    boolean eof = false;
    int byteCount = 0;
    while (!eof) {
        int c = inStream.read();
        if (c == -1)
            eof = true;//from  ww w . j a va 2  s  .c  om
        else {
            System.out.print((char) c);
            ++byteCount;
        }
    }
    System.out.println(byteCount + " bytes were read");
    inStream.close();
    f1.close();
    f2.close();
}

From source file:MainClass.java

public static void main(String[] args) throws IOException {
    FileInputStream fin = new FileInputStream(args[0]);
    System.out.println(args[0] + ":\t" + getCRC32(fin));
    fin.close();//w  w w .  j a v  a  2 s  . co  m
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    String fontFileName = "yourfont.ttf";
    InputStream is = new FileInputStream(fontFileName);

    Font ttfBase = Font.createFont(Font.TRUETYPE_FONT, is);

    Font ttfReal = ttfBase.deriveFont(Font.BOLD, AffineTransform.getRotateInstance(0.5));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    String fontFileName = "yourfont.ttf";
    InputStream is = new FileInputStream(fontFileName);

    Font ttfBase = Font.createFont(Font.TRUETYPE_FONT, is);

    Font ttfReal = ttfBase.deriveFont(AffineTransform.getRotateInstance(0.5));
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    MappedByteBuffer in = new FileInputStream("test.txt").getChannel().map(FileChannel.MapMode.READ_ONLY, 0,
            LENGTH);//  w w  w  .  j a v  a 2  s  .co m
    int i = 0;
    while (i < LENGTH)
        System.out.print((char) in.get(i++));
    System.out.println((char) in.get(i++));
}

From source file:Main.java

public static void main(String args[]) throws IOException {
    SequenceInputStream inStream;
    FileInputStream f1 = new FileInputStream("ByteArrayIOApp.java");
    FileInputStream f2 = new FileInputStream("FileIOApp.java");
    inStream = new SequenceInputStream(f1, f2);
    boolean eof = false;
    int byteCount = 0;
    System.out.println(inStream.available());
    while (!eof) {
        int c = inStream.read();
        if (c == -1)
            eof = true;/*  w w w  .  j av a  2  s. c  o m*/
        else {
            System.out.print((char) c);
            ++byteCount;
        }
    }
    System.out.println(inStream.available());
    System.out.println(byteCount + " bytes were read");
    inStream.close();
    f1.close();
    f2.close();
}

From source file:Main.java

public static void main(String[] args) {
    File fileObject = new File("person.ser");

    try (ObjectInputStream ois = new ObjectInputStream(new FileInputStream(fileObject))) {

        Person p1 = (Person) ois.readObject();
        Person p2 = (Person) ois.readObject();
        Person p3 = (Person) ois.readObject();

        System.out.println(p1);// w w  w. j  av a  2  s.c o m
        System.out.println(p2);
        System.out.println(p3);

    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {

    InputStream fin = new FileInputStream("a.dat");
    OutputStream fout = new FileOutputStream("a.dat.gz");
    GZIPOutputStream gzout = new GZIPOutputStream(fout);
    for (int c = fin.read(); c != -1; c = fin.read()) {
        gzout.write(c);//  w ww  .jav  a 2s.  c om
    }
    gzout.close();
}

From source file:ObjectReader.java

public static void main(String[] arguments) {
    try {/*from w  w  w.  ja v  a2  s. co m*/
        FileInputStream fi = new FileInputStream("message.obj");
        ObjectInputStream oi = new ObjectInputStream(fi);
        Message mess = (Message) oi.readObject();
        System.out.println("Message:\n");
        System.out.println("From: " + mess.from);
        System.out.println("To: " + mess.to);
        System.out.println("Date: " + mess.when + "\n");
        for (int i = 0; i < mess.lineCount; i++)
            System.out.println(mess.text[i]);
        oi.close();
    } catch (Exception e) {
        System.out.println("Error " + e.toString());
    }
}

From source file:Main.java

public static void main(String args[]) throws Exception {
    FileInputStream fis = new FileInputStream("test");
    MessageDigest md = MessageDigest.getInstance("SHA");
    DigestInputStream dis = new DigestInputStream(fis, md);
    ObjectInputStream ois = new ObjectInputStream(dis);
    Object o = ois.readObject();//from www .ja  v a 2  s.co m
    if (!(o instanceof String)) {
        System.out.println("Unexpected data in file");
        System.exit(-1);
    }
    String data = (String) o;
    System.out.println("Got message " + data);
    dis.on(false);
    o = ois.readObject();
    if (!(o instanceof byte[])) {
        System.out.println("Unexpected data in file");
        System.exit(-1);
    }
    byte origDigest[] = (byte[]) o;
    System.out.println(MessageDigest.isEqual(md.digest(), origDigest));
}