Java IO Tutorial - Java FilterOutputStream.flush()

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Syntax

FilterOutputStream.flush() has the following syntax.

public void flush()  throws IOException

Example

In the following code shows how to use FilterOutputStream.flush() method.

/*from   w  w w  .j  a  v  a  2 s. co  m*/

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FilterOutputStream;
import java.io.OutputStream;

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

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

    fos.write(65);

    // 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();
  }
}

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