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:MainClass.java

public static void main(String[] args) throws Exception {
    long length = new File("test.txt").length();
    MappedByteBuffer in = new FileInputStream("test.txt").getChannel().map(FileChannel.MapMode.READ_ONLY, 0,
            length);/*  www  .ja  va  2s.c o  m*/
    int i = 0;
    while (i < length)
        System.out.print((char) in.get(i++));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File aFile = new File("C:/test.bin");
    FileInputStream inFile = new FileInputStream(aFile);
    FileChannel inChannel = inFile.getChannel();
    final int PRIMECOUNT = 6;
    ByteBuffer buf = ByteBuffer.allocate(8 * PRIMECOUNT);
    long[] primes = new long[PRIMECOUNT];
    while (inChannel.read(buf) != -1) {
        ((ByteBuffer) (buf.flip())).asLongBuffer().get(primes);
        for (long prime : primes) {
            System.out.printf("%10d", prime);
        }//from   ww  w . j a  va2  s.  c o  m
        buf.clear();
    }
    inFile.close();
}

From source file:FISTest.java

public static void main(String[] args) throws Exception {
    XMLInputFactory factory = XMLInputFactory.newInstance();
    FileInputStream fis = new FileInputStream("c.xml");
    XMLStreamReader reader = factory.createXMLStreamReader(fis);
    reader.close();//from w w w.jav  a2 s  .  c  om
    fis.close();

}

From source file:Main.java

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

    File f = new File("your.ttf");
    FileInputStream in = new FileInputStream(f);
    Font dynamicFont = Font.createFont(Font.TRUETYPE_FONT, in);
    Font dynamicFont32Pt = dynamicFont.deriveFont(32f);

    JLabel testLabel = new JLabel("Dynamically loaded font \"" + dynamicFont.getName() + "\"");
    testLabel.setFont(dynamicFont32Pt);/*  w  w  w.  ja  v a2s  .c  om*/
    JFrame frame = new JFrame("Font Loading Demo");
    frame.getContentPane().add(testLabel);
    frame.pack();
    frame.setVisible(true);
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    // Create a manifest from a file
    InputStream fis = new FileInputStream("manifestfile");
    Manifest manifest = new Manifest(fis);

    // Construct a string version of a manifest
    StringBuffer sbuf = new StringBuffer();
    sbuf.append("Manifest-Version: 1.0\n");
    sbuf.append("\n");
    sbuf.append("Name: javax/swing/JScrollPane.class\n");
    sbuf.append("Java-Bean: True\n");

    // Convert the string to a input stream
    InputStream is = new ByteArrayInputStream(sbuf.toString().getBytes("UTF-8"));

    // Create the manifest
    manifest = new Manifest(is);
}

From source file:PropView.java

public static void main(String args[]) throws Exception {
    Properties properties = System.getProperties();
    properties.list(System.out);/*from  w ww.  j  ava  2 s  . com*/

    FileInputStream in = null;

    in = new FileInputStream(args[0]);
    properties.load(in);

    System.getProperties().list(System.out);
    System.out.println("\nValue of local.animal.defined is " + Boolean.getBoolean("local.animal.defined"));
    System.out.println("\nValue of local.animal.legcount is " + Integer.getInteger("local.animal.legcount"));
}

From source file:Main.java

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

    XMLDecoder decoder = new XMLDecoder(new BufferedInputStream(new FileInputStream("infilename.xml")));

    MyClass o = (MyClass) decoder.readObject();
    decoder.close();//from  w  w  w . j  av a 2s  . c  o m

    int prop = o.getProp(); // 1
    int[] props = o.getProps(); // [1, 2, 3]

}

From source file:MainClass.java

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

    FileInputStream inFile = new FileInputStream(args[0]);
    FileOutputStream outFile = new FileOutputStream(args[1]);

    FileChannel inChannel = inFile.getChannel();
    FileChannel outChannel = outFile.getChannel();

    for (ByteBuffer buffer = ByteBuffer.allocate(1024 * 1024); inChannel.read(buffer) != -1; buffer.clear()) {
        buffer.flip();/*from w w w. j  a  va  2 s  .  co  m*/
        while (buffer.hasRemaining())
            outChannel.write(buffer);
    }

    inChannel.close();
    outChannel.close();
}

From source file:PrimeReader.java

public static void main(String[] arguments) {
    try {/* www .  j av  a2s. c  o m*/
        FileInputStream file = new FileInputStream("400primes.dat");
        BufferedInputStream buff = new BufferedInputStream(file);
        DataInputStream data = new DataInputStream(buff);

        try {
            while (true) {
                int in = data.readInt();
                System.out.print(in + " ");
            }
        } catch (EOFException eof) {
            buff.close();
        }
    } catch (IOException e) {
        System.out.println("Error - " + e.toString());
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    int i = 0;//from  w ww.  j a  va2 s. com

    // create input streams
    InputStream is = new FileInputStream("C://test.txt");
    FilterInputStream fis = new BufferedInputStream(is);

    // read till the end of the stream
    while ((i = fis.read()) != -1) {
        // converts integer to character
        char c = (char) i;

        System.out.println("Character read: " + c);
    }

}