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 {

    int i;/* w w w . jav a 2s.c o m*/

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

    while ((i = is.read()) != -1) {
        // converts int to char
        char c = (char) i;

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

        // skip one byte
        is.skip(1);
    }
    is.close();
}

From source file:BufferedInputStreamDemo.java

public static void main(String args[]) throws Exception {
    FileInputStream fis = new FileInputStream(args[0]);

    BufferedInputStream bis = new BufferedInputStream(fis);

    int i;/*from   ww w .  ja  v a2  s. c  o m*/
    while ((i = bis.read()) != -1) {
        System.out.println(i);
    }

    fis.close();
}

From source file:FileSplitter.java

public static void main(String args[]) throws Exception {
    FileInputStream fis = new FileInputStream(args[0]);
    int size = 1024;
    byte buffer[] = new byte[size];

    int count = 0;
    while (true) {
        int i = fis.read(buffer, 0, size);
        if (i == -1)
            break;

        String filename = args[1] + count;
        FileOutputStream fos = new FileOutputStream(filename);
        fos.write(buffer, 0, i);/*from  w  w  w  .j  a va2 s .  c o m*/
        fos.flush();
        fos.close();

        ++count;
    }
}

From source file:Main.java

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

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

    // input stream is converted to buffered input stream
    BufferedInputStream bis = new BufferedInputStream(is);

}

From source file:Main.java

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

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

    // input stream is converted to buffered input stream
    BufferedInputStream bis = new BufferedInputStream(is, 200);

}

From source file:Main.java

public static void main(String[] args) throws IOException {
    FileInputStream fis = new FileInputStream(new File("C://test.txt"));

    // skip bytes from file input stream
    fis.skip(4);/*from   w w w.j  av  a 2s .  c o m*/

    // read bytes from this stream
    int i = fis.read();

    // converts integer to character
    char c = (char) i;
    System.out.print("Character read: " + c);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    FileInputStream fin = new FileInputStream("myfile.dat");

    DataInputStream din = new DataInputStream(fin);
    while (true) {
        int theNumber = din.readInt();
        //double theNumber = din.readDouble();
        //System.out.println(din.readUTF());
        //boolean b = din.readBoolean();
        byte b = din.readByte();
        System.out.println("byte : " + b);
        System.out.println(theNumber);

        char ch = din.readChar();
        System.out.println("Char : " + ch);
        float f = din.readFloat();
        System.out.println("float : " + f);
        long l = din.readLong();
        System.out.println("long : " + l);

    }//from   www.  j a va2  s  . c  o m
}

From source file:ByteReader.java

public static void main(String[] arguments) {
    try {// w  w  w .ja  v  a  2s .  co  m
        FileInputStream file = new FileInputStream("class.dat");
        boolean eof = false;
        int count = 0;
        while (!eof) {
            int input = file.read();
            System.out.print(input + " ");
            if (input == -1)
                eof = true;
            else
                count++;
        }
        file.close();
        System.out.println("\nBytes read: " + count);
    } catch (IOException e) {
        System.out.println("Error - " + e.toString());
    }
}

From source file:Main.java

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

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

    System.out.println("Characters printed:");
    // create new buffered reader

    // reads and prints BufferedReader
    System.out.println((char) is.read());
    System.out.println((char) is.read());

    // mark invoked at this position
    is.mark(0);//from  w w w.j a  va 2 s  .  c o  m
    System.out.println("mark() invoked");
    System.out.println((char) is.read());
    System.out.println((char) is.read());

    // reset() repositioned the stream to the mark
    if (is.markSupported()) {
        is.reset();
        System.out.println("reset() invoked");
        System.out.println((char) is.read());
        System.out.println((char) is.read());
    } else {
        System.out.print("InputStream does not support reset()");
    }
    is.close();
}

From source file:Main.java

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

    FileInputStream is = new FileInputStream(new File("your"));

    CertificateFactory cf = CertificateFactory.getInstance("X.509");
    java.security.cert.Certificate cert = cf.generateCertificate(is);
}