class HelloWorldWriter
{
	   
	public static void main (String[] args)   
	{
		TextWriter outFile;
		String fileName = "helloworld.txt";
		outFile = new TextWriter(fileName);
		outFile.println ( "This is very interesting!\n\n" );
		if (outFile.fail())      
		{
			System.err.println("Can't open " + fileName);
			System.exit(1);
			      
		}
		for (int loop = 1; loop <= 4; loop++)   
		{
			System.out.println (loop + "  Hello world" );
			outFile.println(loop + "   Hello world");
			      
		}
		outFile.close();
		   
	}
}