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

License:asdf

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

    Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("outfilename"), "UTF8"));
    out.write("asdf");
    out.close();/* www  .ja v a 2 s  .com*/
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    Formatter fmtCon = new Formatter(System.out);
    Formatter 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();//from   w  ww.  jav a  2s .c o m

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

    // write something in the file
    oout.writeBoolean(true);/*from  www. j av a2s.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 a boolean
    System.out.println(ois.readBoolean());
    ois.close();

}

From source file:Main.java

public static void main(String[] args) {
    try {/*from  w ww  .j a v  a 2s  .c  o m*/

        OutputStream os = new FileOutputStream("test.txt");

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

        // write something
        os.write('A');

        // flush the stream
        os.flush();

        // close the stream but it does nothing
        os.close();

        // read what we wrote
        System.out.println((char) is.read());
        is.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }

}

From source file:Main.java

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

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

    oout.writeUTF("Hello World from java2s.com");
    oout.flush();/*from w w  w. j av  a  2  s .  c  o  m*/
    oout.close();

    ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt"));

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

    // check how many bytes are available
    System.out.println(ois.available());
    ois.close();
}

From source file:Main.java

public static void main(String[] args) {
    try {/*  ww  w .j  a va2  s .  c  o m*/

        OutputStream os = new FileOutputStream("test.txt");

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

        // write something
        os.write('A');

        // flush the stream but it does nothing
        os.flush();

        // write something else
        os.write('B');

        // read what we wrote
        System.out.println(is.available());
        os.close();
        is.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }

}

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);

    fos.write(65);/*from w  w  w  . j  a  v a  2 s .  c  o  m*/

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

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

    // read byte
    int i = fis.read();

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

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

From source file:Main.java

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

    byte[] buf = { 12, 11, 22, 33, 44 };

    FileOutputStream fos = new FileOutputStream("c:/test.txt");
    DataOutputStream dos = new DataOutputStream(fos);

    int size = 0;

    for (byte b : buf) {
        dos.write(b);//from www .  j  av a 2 s .  co m
        size = dos.size();
        System.out.print("Size: " + size + "; ");
    }
}

From source file:Main.java

public static void main(String[] args) {
    String destFile = "primitives.dat";

    try (DataOutputStream dos = new DataOutputStream(new FileOutputStream(destFile))) {
        dos.writeInt(765);/*from ww w. java2  s  .c  o  m*/
        dos.writeDouble(6789.50);
        dos.writeBoolean(true);
        dos.writeUTF("Java Input/Output  is cool!");

        dos.flush();

        System.out.println("Data has  been  written to " + (new File(destFile)).getAbsolutePath());
    } catch (Exception e) {
        e.printStackTrace();
    }
}