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 {

    InputStream is = new FileInputStream("c:\\test.txt");

    DataInputStream dis = new DataInputStream(is);

    int count = is.available();

    byte[] bs = new byte[count];

    dis.read(bs, 4, 3);//  w w w  .  j a va  2  s .co  m

    for (byte b : bs) {
        char c = (char) b;

        if (b == 0) {
            c = '0';
        }
        System.out.print(c);
    }
}

From source file:Main.java

public static void main(String[] args) throws IOException {
    // new input stream reader is created
    FileInputStream fis = new FileInputStream("C:/test.txt");
    InputStreamReader isr = new InputStreamReader(fis);

    // the name of the character encoding returned
    String s = isr.getEncoding();
    System.out.print("Character Encoding: " + s);
    isr.close();/*from   w  ww. j a v a 2  s .  com*/
}

From source file:FileInputOutputExample.java

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

    InputStream is = new FileInputStream("in.txt");
    OutputStream os = new FileOutputStream("out.txt");
    int c;//from  ww w.  j a v  a2  s.c  o m
    while ((c = is.read()) != -1) {
        System.out.print((char) c);
        os.write(c);
    }
    is.close();
    os.close();

}

From source file:Main.java

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

    InputStreamReader isr = new InputStreamReader(is);

    BufferedReader br = new BufferedReader(isr);

    System.out.println((char) br.read());
    System.out.println((char) br.read());

    br.mark(26);/*from   w ww  .j  a va2  s  .  co m*/
    System.out.println("mark() invoked");
    System.out.println((char) br.read());
    System.out.println((char) br.read());

    br.reset();
    System.out.println("reset() invoked");
    System.out.println((char) br.read());
    System.out.println((char) br.read());

}

From source file:MainClass.java

public static void main(String[] args) throws IOException {
    FileChannel fc = new FileInputStream(new File("temp.tmp")).getChannel();
    IntBuffer ib = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size()).asIntBuffer();
    while (ib.hasRemaining())
        ib.get();// w w w. j  a v  a 2s. c om
    fc.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    byte[] buffer = new byte[1024];
    BufferedInputStream bufferedInput = new BufferedInputStream(new FileInputStream("filename.txt"));

    int bytesRead = 0;
    while ((bytesRead = bufferedInput.read(buffer)) != -1) {
        String chunk = new String(buffer, 0, bytesRead);
        System.out.print(chunk);//from www.  j a va 2s . c  o m
    }
    bufferedInput.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);

    // read until a single byte is available
    while (bis.available() > 0) {
        // get the number of bytes available
        Integer nBytes = bis.available();
        System.out.println("Available bytes = " + nBytes);

        // read next available character
        char ch = (char) bis.read();

        // print the read character.
        System.out.println("The character read = " + ch);
    }/*from ww  w  . j a  va 2  s .c om*/

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File file = new File("C:/ReadFile.txt");
    FileInputStream fin = new FileInputStream(file);
    BufferedInputStream bin = new BufferedInputStream(fin);

    byte[] contents = new byte[1024];
    int bytesRead = 0;
    String strFileContents;// ww w  .ja  v a  2s. c o  m
    while ((bytesRead = bin.read(contents)) != -1) {
        strFileContents = new String(contents, 0, bytesRead);
        System.out.print(strFileContents);
    }
    bin.close();
}

From source file:Main.java

static public void main(String args[]) throws Exception {
    FileInputStream fin = new FileInputStream("infile.txt");
    FileOutputStream fout = new FileOutputStream("outfile.txt");

    FileChannel inc = fin.getChannel();
    FileChannel outc = fout.getChannel();

    ByteBuffer bb = ByteBuffer.allocate(1024);

    while (true) {
        int ret = inc.read(bb);
        if (ret == -1)
            break;
        bb.flip();/*from   ww  w . j  a  va2  s.  c  o  m*/
        outc.write(bb);
        bb.clear();
    }
}

From source file:Main.java

static public void main(String args[]) throws Exception {
    FileInputStream fin = new FileInputStream("infile.txt");
    FileOutputStream fout = new FileOutputStream("outfile.txt");

    FileChannel inc = fin.getChannel();
    FileChannel outc = fout.getChannel();

    ByteBuffer bb = ByteBuffer.allocateDirect(1024);

    while (true) {
        int ret = inc.read(bb);
        if (ret == -1)
            break;
        bb.flip();//from   w  w  w.j a  va  2 s  .  c  o m
        outc.write(bb);
        bb.clear();
    }
}