Output

This application illustrates the use of the FileOutputStream class for writing a stream of data to a file. It can accept two parameters from the commandline: a filename and a path.

import java.awt.*;
import java.io.*;

public class FileStreamWrite  {
//  simplest write to a file

  public FileStreamWrite  ()  {
    super ();
  }  // end FileStreamWrite  constructor

  public static void main ( String [ ] args )  {

  String fileName;
  String path;
  File outFile;
  FileOutputStream  outStream;
  String message = new String ( "Hello, World!\nHello, World, again." );
  char []  messageArray;

  FileStreamWrite writeAppl = new FileStreamWrite ();

  if ( args.length > 0 ) fileName= args[0];
  else {
    fileName = new String ( "testfile" );
    path = new String ( "/afs/unc/home/jbs/public_html/java/wwwp/lecture_8" );
  }
  if ( args.length > 1 ) path = args[1];
  else path = new String ( "/afs/unc/home/jbs/public_html/java/wwwp/lecture_8" );

  outFile = new File ( path, fileName );
  try { outStream = new FileOutputStream ( outFile ); }
  catch ( IOException except ) { return; }

  System.out.println ( "Writing to file: " + outFile.getName() );

  messageArray = message.toCharArray ();
  for ( int i = 0; i < messageArray.length; i++ ) {
    try {outStream.write ( (byte)messageArray [ i ] ); }
    catch ( IOException except ) { return; }
  }  // end for 

  try {outStream.close (); } catch ( IOException except ) { return; }

  }  // end main

}  // end FileStreamWrite