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 Exception {
    FileInputStream fis = new FileInputStream("test.txt");
    FileChannel fc = fis.getChannel();

    long startRegion = 0;
    long endRegion = fc.size();
    MappedByteBuffer mbb = fc.map(FileChannel.MapMode.READ_ONLY, startRegion, endRegion);
    while (mbb.hasRemaining()) {
        System.out.print((char) mbb.get());
    }//from   www .  j  a va2s . c  om
    fis.close();
}

From source file:Main.java

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

    InputStream inStream = new FileInputStream("c:/test.txt");
    BufferedInputStream bis = new BufferedInputStream(inStream);

    int byteNum = bis.available();

    System.out.println(byteNum);// w w w.ja  va  2 s  .  co  m

    bis.close();

    byteNum = bis.available();
    System.out.println(byteNum);

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    InputStream is = new FileInputStream("c:\\test.txt");

    DataInput in = new DataInputStream(is);
    DataInputStream.readUTF(in);//  w w w. j a va 2s  . c om

}

From source file:Main.java

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

    // new input stream created
    InputStream is = new FileInputStream("C://test.txt");

    // invoke available
    int i = is.available();

    // number of bytes available is printed
    System.out.println(i);//from  w  ww. j a v a  2 s .  c  o m

    // releases any system resources associated with the stream
    is.close();

    // throws io exception on available() invocation
    i = is.available();
    System.out.println(i);

}

From source file:Main.java

public static void main(String args[]) throws Exception {
    FileInputStream fIn = new FileInputStream("test.txt");
    FileChannel fChan = fIn.getChannel();

    long fSize = fChan.size();
    ByteBuffer mBuf = ByteBuffer.allocate((int) fSize);

    fChan.read(mBuf, 10);//from  w  w w . j a  v a 2 s .com
    mBuf.rewind();

    for (int i = 0; i < fSize; i++) {
        System.out.print((char) mBuf.get());
    }
    fChan.close();
    fIn.close();
}

From source file:Main.java

public static void main(String args[]) throws Exception {
    FileInputStream fIn = new FileInputStream("test.txt");
    FileChannel fChan = fIn.getChannel();

    long fSize = fChan.size();
    ByteBuffer mBuf = ByteBuffer.allocate((int) fSize);

    fChan.read(mBuf);/*from   ww  w. ja  v  a  2s  .c  om*/
    mBuf.rewind();

    for (int i = 0; i < fSize; i++) {
        System.out.print((char) mBuf.get());
    }
    fChan.close();
    fIn.close();
}

From source file:Main.java

public static void main(String args[]) throws Exception {
    Properties p = new Properties();
    p.load(new FileInputStream("test.txt"));

    p.store(new FileOutputStream("t.txt"), "no comments");
}

From source file:Main.java

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

    byte[] bs = new byte[4];

    FileInputStream fis = new FileInputStream("C://test.txt");

    // read bytes to the buffer
    int i = fis.read(bs);

    System.out.println("Number of bytes read: " + i);
    // for each byte in buffer
    for (byte b : bs) {
        // converts byte to character
        char c = (char) b;
        System.out.println(c);/*  ww  w. ja va  2 s.com*/
    }

}

From source file:Main.java

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

    FileInputStream fin = new FileInputStream("a.dat");
    InflaterInputStream iis = new InflaterInputStream(fin);
    FileOutputStream fout = new FileOutputStream("b.dat");
    for (int c = iis.read(); c != -1; c = iis.read()) {
        fout.write(c);//from  w  w w .  j av a  2 s  .c  om
    }
    fout.close();

}

From source file:Main.java

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

    byte[] bs = new byte[4];
    FileInputStream fis = new FileInputStream("C://test.txt");

    // read bytes to the buffer
    int i = fis.read(bs, 2, 1);

    System.out.println("Number of bytes read: " + i);
    // for each byte in buffer
    for (byte b : bs) {
        // converts byte to character
        char c = (char) b;
        if (b == 0) {
            c = '-';
        }// ww  w .  j av  a  2s.c  o m
        System.out.println(c);
    }
}