Example usage for java.io FileOutputStream FileOutputStream

Introduction

In this page you can find the example usage for java.io FileOutputStream FileOutputStream.

Prototype

public FileOutputStream(FileDescriptor fdObj)

Source Link

Document

Creates a file output stream to write to the specified file descriptor, 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 {

    OutputStream os = new FileOutputStream("C://test.txt");
    FilterOutputStream fos = new FilterOutputStream(os);

    // writes buffer to the output stream
    fos.write(65);//from  ww w. jav  a2s . c  o  m

    // forces byte contents to written out to the stream
    fos.flush();

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

    // get byte from the file
    int i = fis.read();

    // convert integer to character
    char c = (char) i;

    System.out.print("Character read: " + c);
    fos.close();
    fis.close();
}

From source file:Copy.java

public static void main(String[] args) throws Exception {
    FileInputStream fis = null;/*from  ww  w . jav a 2  s.  co  m*/
    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:Main.java

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

    FileOutputStream out = new FileOutputStream("test.txt");
    ObjectOutputStream oout = new ObjectOutputStream(out);

    // write something in the file
    oout.writeUTF("Hello World from java2s.com");
    oout.flush();/* www. j  a va  2s  .c om*/

    // create an ObjectInputStream for the file we created before
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt"));

    // read from the stream
    for (int i = 0; i < ois.available();) {
        System.out.print((char) ois.read());
    }

    ois.close();

}

From source file:Main.java

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

    byte b = 66;/* ww w  .j  ava  2 s .  co  m*/
    int i = 0;
    FileOutputStream fos = new FileOutputStream("C://test.txt");

    fos.write(b);

    fos.flush();

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

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

        System.out.print(c);
    }

}

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 b[] = { 65, 66, 67, 68, 69 };

    FileOutputStream fos = new FileOutputStream("C://test.txt");

    fos.write(b);//from  w  w w  .jav a  2  s .  c om

    // pushes stream content to the underlying file
    fos.flush();

    // returns file channel associated with this stream
    FileChannel fc = fos.getChannel();

    // returns the number of bytes written
    long pos = fc.position();

    System.out.print(pos);

}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    FileChannel in = new FileInputStream("source.txt").getChannel(),
            out = new FileOutputStream("target.txt").getChannel();
    in.transferTo(0, in.size(), out);/*w  ww. ja v  a  2  s.c  o  m*/
    // Or:
    // out.transferFrom(in, 0, in.size());
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    Formatter fmtCon = new Formatter(System.out);
    Formatter fmtFile;//w w  w . j  av a 2  s . co m
    fmtFile = new Formatter(new FileOutputStream("test.fmt"));
    fmtCon.format("a negative number: %(.2f\n\n", -123.34);
    fmtCon.format("%8s %8s\n", "Value", "Square");

    for (int i = 1; i < 20; i++)
        fmtCon.format("%8d %8d\n", i, i * i);

    // write to the file.
    fmtFile.format("This is a negative number: %(.2f\n\n", -123.34);

    fmtFile.format("%8s %8s\n", "Value", "Square");
    for (int i = 1; i < 20; i++)
        fmtFile.format("%8d %8d\n", i, i * i);

    fmtFile.close();

    if (fmtFile.ioException() != null) {
        System.out.println("File I/O Error Occurred");
    }
}

From source file:Main.java

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

    byte b = 127;

    FileOutputStream out = new FileOutputStream("test.txt");
    ObjectOutputStream oout = new ObjectOutputStream(out);

    // write something in the file
    oout.writeByte(b);/*  w  ww  .  j  a va 2 s .  c  om*/
    oout.flush();
    oout.close();
    // create an ObjectInputStream for the file we created before
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt"));

    // read and print the unshared object
    System.out.println(ois.readUnsignedByte());
    ois.close();
}

From source file:Main.java

public static void main(String[] args) throws IOException {
    byte[] b = { 65, 66, 67, 68, 69 };
    int i = 0;/*from   www .  j  a v  a2 s .c o m*/
    FileOutputStream fos = new FileOutputStream("C://test.txt");

    fos.write(b);

    // flushes the content to the underlying stream
    fos.flush();

    // create new file input stream
    FileInputStream fis = new FileInputStream("C://test.txt");

    // read till the end of the file
    while ((i = fis.read()) != -1) {
        // convert integer to character
        char c = (char) i;
        System.out.print(c);
    }
}