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:Copy.java

public static void main(String[] args) throws Exception {
    FileInputStream fis = null;//from  w w  w.  j  a v a  2 s .com
    FileOutputStream fos = null;
    fis = new FileInputStream(args[0]);
    fos = new FileOutputStream(args[1]);

    int byte_;
    while ((byte_ = fis.read()) != -1)
        fos.write(byte_);
}

From source file:MainClass.java

public static void main(String args[]) {
    try {//from w  w w.j ava  2 s.  co m
        FileInputStream fis = new FileInputStream(args[0]);

        BufferedInputStream bis = new BufferedInputStream(fis);

        int i;
        while ((i = bis.read()) != -1) {
            System.out.println(i);
        }
        fis.close();
    } catch (Exception e) {
        System.out.println("Exception: " + e);
    }
}

From source file:Main.java

public static void main(String[] args) throws IOException {
    DataInputStream in = new DataInputStream(new FileInputStream("Main.class"));

    int start = in.readInt();
    if (start != 0xcafebabe) {
        System.out.println("not valid");
    }/*from   w w w  . j  a  v  a2 s  . c  om*/
    in.close();
    System.out.println(in.readUnsignedShort() + "/" + in.readUnsignedShort());

}

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);

    // read number of bytes available
    int numByte = bis.available();

    // byte array declared
    byte[] buf = new byte[numByte];

    // read byte into buf , starts at offset 2, 3 bytes to read
    bis.read(buf, 2, 3);/*from   w  w w  .  j a  va 2s.c  o  m*/

    // for each byte in buf
    for (byte b : buf) {
        System.out.println((char) b + ": " + b);
    }
}

From source file:Main.java

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

    FileInputStream fis = new FileInputStream("C:/test.txt");
    LineNumberInputStream lnis = new LineNumberInputStream(fis);
    int i;/*from  w  w  w.j a va2s.co  m*/
    while ((i = lnis.read()) != -1) {

        char c = (char) i;

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

        int j = lnis.available();

        System.out.println("Available bytes: " + j);
    }

}

From source file:Main.java

public static void main(String args[]) throws Exception {
    InputStream fis = new FileInputStream("a.exe");

    byte[] buffer = new byte[1024];
    MessageDigest complete = MessageDigest.getInstance("MD5");
    int numRead;/*from w  ww . j a  v a 2  s . c o m*/
    do {
        numRead = fis.read(buffer);
        if (numRead > 0) {
            complete.update(buffer, 0, numRead);
        }
    } while (numRead != -1);
    fis.close();

    byte[] b = complete.digest();
    String result = "";
    for (int i = 0; i < b.length; i++) {
        result += Integer.toString((b[i] & 0xff) + 0x100, 16).substring(1);
    }
    System.out.println(result);

}

From source file:FileDeflater.java

public static void main(String[] args) throws Exception {
    FileInputStream fin = new FileInputStream("a.dat");
    FileOutputStream fout = new FileOutputStream("b.dat");
    DeflaterOutputStream dos = new DeflaterOutputStream(fout);
    for (int c = fin.read(); c != -1; c = fin.read()) {
        dos.write(c);/*w  w w .j a  va2s  .c  o  m*/
    }
    dos.close();
    fin.close();
}

From source file:Main.java

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

From source file:Main.java

public static void main(String[] args) throws IOException {
    int i;//from ww  w .  j av  a  2s. c  om
    FileInputStream fis = new FileInputStream("C:/test.txt");
    InputStreamReader isr = new InputStreamReader(fis);

    // read till the end of the file
    while ((i = isr.read()) != -1) {
        // int to character
        char c = (char) i;
        System.out.println("Character Read: " + c);
    }
    isr.close();
}

From source file:Main.java

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

    // read and print characters one by one
    System.out.println((char) bis.read());
    System.out.println((char) bis.read());
    System.out.println((char) bis.read());

    // mark is set on the input stream
    bis.mark(0);//from  w ww  . j a  v  a2s  .c  o  m
    System.out.println((char) bis.read());

    // reset is called
    bis.reset();

    // read and print characters
    System.out.println((char) bis.read());
    System.out.println((char) bis.read());

}